From qocruces@usc.es  Mon May 15 03:06:38 1995
Received: from uscmail.usc.es  for qocruces@usc.es
	by www.ccl.net (8.6.10/930601.1506) id CAA07184; Mon, 15 May 1995 02:52:46 -0400
Received: by uscmail.usc.es (5.67b/1.34)
	id AA11209; Mon, 15 May 1995 08:56:42 +0200
Date: Mon, 15 May 1995 08:56:42 +0200
From: qocruces@usc.es (Jacobo Cruces Colado)
Message-Id: <199505150656.AA11209@uscmail.usc.es>
To: chemistry@ccl.net
Subject: CCL: NMR Analyzer package



     I want to announce the availability of a new spin system simulator, called
NMR Analyzer. The program allows the calculation up to seven nuclei, but 
non-calculated signals can also be incorporated into the spectrum. Other program feature allows the analysis of AB, ABX, AB2 and AA'XX' spin systems through
the spectral frequencies. Examples of these types of spin systems, and parame-
ters for calculating the theoretical 1H-NMR spectrum of some molecules (methyl
acrylate, beta-D-glucopyranose pentaacetate...) are included in the package.

     The program has been uploaded to the CICA FTP site and to Infomeister
The program runs on 386-486 based computers under Microsoft Windows 3.x, and
requires the library VBRUN100.DLL, which can be easily found in many FTP sites.

     Questions, comments and suggestions will be very appreciated.

Jacobo Cruces Colado
Department of Organic Chemistry
University of Santiago de Compostela
Avda. de las Ciencias s/n
15706 SPAIN

e-mail:     qocruces@uscmail.usc.es
             jcruces@sfdzuma.usc.es

From ahirasim@agr.kyushu-u.ac.jp  Mon May 15 06:51:41 1995
Received: from nogakubu.agr.kyushu-u.ac.jp  for ahirasim@agr.kyushu-u.ac.jp
	by www.ccl.net (8.6.10/930601.1506) id GAA08904; Mon, 15 May 1995 06:49:18 -0400
Received: from [133.5.200.49] (pestic3.ach.agr.kyushu-u.ac.jp [133.5.200.49]) by nogakubu.agr.kyushu-u.ac.jp (8.6.9+2.4W/3.4Wbeta3) with SMTP id TAA20643 for <chemistry@ccl.net>; Mon, 15 May 1995 19:49:52 +0900
Message-Id: <199505151049.TAA20643@nogakubu.agr.kyushu-u.ac.jp>
Date: Mon, 15 May 1995 19:52:29 +0900
To: chemistry@ccl.net
From: ahirasim@agr.kyushu-u.ac.jp (Akinori Hirashima)
X-Sender: ahirasim@nogakubu.agr.kyushu-u.ac.jp
Subject: summary of web for chemistry
Return-Receipt-To: ahirasim@agr.kyushu-u.ac.jp
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-2022-jp
X-Mailer: Eudora-J(1.3.8.5-J13)


Dear CCL'ers:

This is the summary of the responses I received to my question
on  web for chemistry.  I feel quite strongly
that  the following should be "de facto" collections:

http://hackberry.chem.niu.edu:70/0/cheminf.html
http://www.chem.ucla.edu/chempointers.html
http://www.ccl.net/ccl/chemurls.html

Thanks  for your input.
ahirasim@agr.kyushu-u.ac.jp (Akinori Hirashima)


From toukie@zui.unizh.ch  Mon May 15 07:06:42 1995
Received: from rzusuntk.unizh.ch  for toukie@zui.unizh.ch
	by www.ccl.net (8.6.10/930601.1506) id GAA08896; Mon, 15 May 1995 06:46:09 -0400
Received: by rzusuntk.unizh.ch (4.1/SMI-4.1.9)
	id AA29700; Mon, 15 May 95 12:46:03 +0200
X-Nupop-Charset: Swiss
Date: Mon, 15 May 1995 12:45:56 +0100 (MET)
From: "Hr Dr. S. Shapiro" <toukie@zui.unizh.ch>
Sender: toukie@zui.unizh.ch
Reply-To: toukie@zui.unizh.ch
Message-Id: <45957.toukie@zui.unizh.ch>
To: chemistry@ccl.net
Subject: Conformer generator for MOPAC


Dear Colleagues;

     Is anyone aware of a conformer generating programme that can be inter-
faced with MOPAC 6.0 or MOPAC7 (or possibly MOPAC 93)?  The programme I seek
should be able to rotate designated bonds in a molecule, systematically
(fixed rotational angle) and/or (preferably) using a Monte Carlo stochastic
procedure, to generate an ensemble of molecules plus their Z-matrices (or
some other coordinate file format that can be readily converted to a Z-
matrix); I would then wish to feed the resultant Z-matrices one at a time
into MOPAC in order to obtain heats of formation and other information.

     Thanks in advance to all responders.


Sincerely,

(Dr.) S. Shapiro
Institut fuer orale Mikrbiologie und allgemeine Immunologie
Zentrum fuer Zahn-, Mund- und Kieferheilkunde der Universitaet Zuerich
Plattenstrasse 11
Postfach
CH-8028 Zuerich 7
Switzerland

Internet: toukie@zui.unizh.ch
FAX-nr: ( ... + 1) 261'56'83

From Daniel.Vercauteren@fundp.ac.be  Mon May 15 07:06:45 1995
Received: from hermes.fundp.ac.be  for Daniel.Vercauteren@fundp.ac.be
	by www.ccl.net (8.6.10/930601.1506) id HAA09010; Mon, 15 May 1995 07:00:11 -0400
Received: by hermes.fundp.ac.be; id AA13855; Mon, 15 May 1995 13:07:42 +0200
Received: from telemann.scf.fundp.ac.be by hermes.fundp.ac.be; id AA13855; Mon, 15 May 1995 13:07:42 +0200
Received: from pci-dpv.scf.fundp.ac.be by telemann.scf.fundp.ac.be (AIX 3.2/UCB 5.64/4.03)
          id AA32777; Mon, 15 May 1995 12:46:45 +0200
Date: Mon, 15 May 1995 12:46:45 +0200
Message-Id: <9505151046.AA32777@telemann.scf.fundp.ac.be>
X-Sender: vercau@telemann.scf.fundp.ac.be
Mime-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
To: chemistry@ccl.net
From: Daniel.Vercauteren@fundp.ac.be (Daniel Vercauteren)
Subject: NN courses in Namur (Belgium)



The "Societe Royale de Chimie de Belgique" (Namur Section) and the
"Laboratoire de Physico-Chimie Informatique des Facultes Universitaires
Notre Dame de la Paix", Namur (Belgium)

propose in the framework of the "Advanced Lectures in Computational
Chemistry and Physics"
of the Namur SCF Center a series of specialized lectures on:


NEURAL NETWORKS FOR CHEMISTS


By Jure Zupan
Kemijski Institut, Ljubljana, Slovenija
National Institute of Chemistry, Slovenia


Monday, June 12th, 1995, 16h00-18h30 (including coffee break)

Theoretical Background: error-back propagation, Kohonen, and
counter-propagation.
Application Possibilities: supervised and unsupervised learning,
classifications and
experimental design, models and inverse models, models and optimisations.

Tuesday, June 13th, 1995, 16h00-18h30 (including coffee break)

Chemical Applications Part I: spectroscopies (IR, UV, EDX spectra),
property predictions (origin of olive oils, ageing of TiO2-based paints,
mechanical properties of paint coatings), control of chemical processes
(fault predictions, direct and inverse models for continuously stirred tank
reactor - CSTR).

Wednesday, June 14th, 1995, 16h00-18h30 (including coffee break)

Chemical Applications Part II: reactivity of bonds, electrostatic
potentials, secondary structure of proteins (moving window), etc=8A

Ref.: J. Zupan & J. Gasteiger, Neural Networks for Chemists, VCH, Weinheim,
Germany, 1993.



Informations: Prof. D.P.Vercauteren, Dr. L. Leherte
Laboratoire de Physico-Chimie Informatique Facult=E9s Universitaires
Notre-Dame de la Paix
Rue de Bruxelles, 61  B-5000 NAMUR
T=E9l.: +32-81-724534 -- FAX: +32-81-724530
e-mail: vercau,leherte@scf.fundp.ac.be

Address of the Courses:
=46acult=E9s Universitaires Notre-Dame de la Paix
Auditorium CH1, rue J.Graf=E9, 2
B-5000 Namur, Belgium


=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
| Prof. Daniel P. Vercauteren  | tel     +32 (81) 72 45 34              |
| Departement de Chimie        | fax     +32 (81) 72 45 30              |
| F.U.N.D.P.                   | e-mail  Daniel.Vercauteren@fundp.ac.be |
| Rue de Bruxelles, 61         |                                        |
| B-5000 Namur Belgium         |                                        |
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D



From SERGEI@ps1515.chemie.uni-marburg.de  Mon May 15 08:06:56 1995
Received: from Mailer.Uni-Marburg.DE  for SERGEI@ps1515.chemie.uni-marburg.de
	by www.ccl.net (8.6.10/930601.1506) id HAA09770; Mon, 15 May 1995 07:58:45 -0400
Received: from ps1515.Chemie.Uni-Marburg.DE by Mailer.Uni-Marburg.DE (AIX 3.2/UCB 5.64/20.07.94)
          id AA109479; Mon, 15 May 1995 13:58:30 +0200
Received: from NWS_CHEMIE/MAILQ by ps1515.chemie.uni-marburg.de (Mercury 1.20);
    15 May 95 13:59:05 GMT+2
Received: from MAILQ by NWS_CHEMIE (Mercury 1.20); 15 May 95 13:58:46 GMT+2
To: chemistry@ccl.net
From: "Sergei Vyboishchikov"  <SERGEI@ps1515.chemie.uni-marburg.de>
Date:         15 May 95 13:58:41 MDT
Subject:      Gear method: summary
Priority: normal
X-Mailer:     Pegasus Mail v2.3 (R5).
Message-Id: <28D0D5B7ADC@ps1515.chemie.uni-marburg.de>


Dear Netters:

Recently I have posted a question concerning Fortran implementations
of the Gear method. I would like to express my sincere gratitude to
the netters whose responses I received. Some of the replies were very
helpful. One of the programs is available, for example, from
ftp://ftp.uni-bayreuth.de/mounts/pubdsk2/math/netlib/sodepack
The book by Vetterling et al. "Numerical Receipts..." does not contain
any Fortran code for Gear method.

Here is the summary of the responses (in part shortened):
--------------------------------------------------------------------
From: uscgckc3@ibmmail.com

Hello Sergei,
The QCPE has a very nice pc program set called "GEAR ITERATOR"
which is available in Microsoft Fortran.  I believe they will even
supply the executable.  The QCPE number is QCMP022.
Regards,
Anthony DeBellis
Ciba Corp.
uscgckc3@ibmmail.com
--------------------------------------------------------------------
From: "FREDERICK IGNATZ-HOOVER" <FFIGNA@ccmail.monsanto.com>

     Try "gear" from the QCPE at the University of Indiana in Bloomington,
     In. USA
--------------------------------------------------------------------
From: doherty@msc.edu (David C. Doherty)

.....<Stuff omitted>
--

On the other hand, you may have some luck poking
around at netlib, for instance:

  http://www.netlib.org/ode/index.html
  ftp://ftp.netlib.org/ode/index

  http://www.netlib.org/odepack/index.html
  ftp://ftp.netlib.org/odepack/index

--------------------------------------------------------------------
From: Dave Edelson <EDELSON@EVAX12.ENG.FSU.EDU>

A reasonable implementation of Gear is found in the IMSL Library, routine
IVPAG, which can be switched between Adams-Moulton or Gear.  However, it
requires the entire library to be implemented, since the routine calls
other subroutines from the library.

Fortran code for older versions of Gear are found in several places in the
literature.

D. Edelson
College of Engineering
Florida A&M/State Universities
--------------------------------------------------------------------
From: ars@ari.net (ARSoftware Corporation)

Though not fortran, Kinetics for Windows is an easy to use Microsoft Windows
based software package for modeling complex chemical reactions and reaction
mechanisms. This unique program computes the concentrations of the chemical
species in a system as a function of time for multistep reversible
reactions, given the reaction mechanism, the forward and reverse rate
constants, and the initial concentrations of reactants and products.

     KINETICS easy to use Windows interface allows you to input complex chemical
systems by simply typing in the reaction equations and the associated rate
constants.  The program automatically formulates the differential equations
necessary to describe the kinetics of the chemical system.  The rate
equations are then numerically integrated using a modified GEAR algorithm.

.....<Stuff omitted>

For more information, contact ars@ari.net

Sincerely,

Sat Want S. Khalsa
ARSoftware

=====================================================
ARSoftware Corporation
8201 Corporate Drive
Landover, MD  20785
Phone:  (301) 459-3773
FAX:    (301) 459-3776

e-mail: ars@ari.net
--------------------------------------------------------------------
From: jcw@biosym.com (Jack Wathey )

Dear Sergei,

The program you want is "lsoda" (acronym for Livermore Solver of Ordinary
Differential equations: Automatic).  It's a robust and highly optimized
FORTRAN implementation with automatic integration step size control.
Unfortunately I don't remember where it is on the net, but you should
be able to find it with Archie or some similar net-searching tool.

Best wishes,

Jack Wathey
Biosym Technologies, Inc.
--------------------------------------------------------------------
From: jpool@ccsf.caltech.edu (J.C.T. Pool)

Have you looked at Netlib for ODE codes?

See

http://www.netlib.org/index.html

or send a message to

netlib.org

with the text

send index

--------------------------------------------------------------------
From: "Dr. Chris L. Waller" <waller@thor.herl.epa.gov>

Numerical Recipes in Fortran book and program diskette.

====================================================================
                         Yours,         Sergei.

From h.rzepa@ic.ac.uk  Mon May 15 10:36:48 1995
Received: from romeo.ic.ac.uk  for h.rzepa@ic.ac.uk
	by www.ccl.net (8.6.10/930601.1506) id KAA12540; Mon, 15 May 1995 10:28:32 -0400
Received: from cscmgb.cc.ic.ac.uk (actually sg1.cc.ic.ac.uk) by romeo.ic.ac.uk 
          with SMTP (PP); Mon, 15 May 1995 15:21:07 +0100
Received: from [155.198.224.89] by cscmgb.cc.ic.ac.uk (931110.SGI/4.0) 
          id AA06338; Mon, 15 May 95 15:21:03 +0100
X-Sender: rzepa@155.198.63.8
Message-Id: <abdd11630a0210044b0b@[155.198.224.89]>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Date: Mon, 15 May 1995 14:21:08 +0000
To: chemistry@ccl.net
From: h.rzepa@ic.ac.uk (Rzepa,Henry)
Subject: Re: CCL:summary of web for chemistry


>Dear CCL'ers:
>
>This is the summary of the responses I received to my question
>on  web for chemistry.  I feel quite strongly
>that  the following should be "de facto" collections:
>
>http://hackberry.chem.niu.edu:70/0/cheminf.html
>http://www.chem.ucla.edu/chempointers.html
>http://www.ccl.net/ccl/chemurls.html

We went through this some time ago. The selection
by any individual of three "de facto" sites is bound
to create dissent from those whose other three favourite
sites are omitted. In no way should the above individual
opinion be taken as an acceptance that we have all "voted"
and that the above is the result.

I do not wish to necessarily dissent
from the three selected, except to point out they are all
in the USA. As we are all aware, the three sites contain
a great many pointers, and that access from non-USA
sites can be VERY problematic (and indeed vice versa).
 A good non-USA site is
http://www.shef.ac.uk/uni/academic/A-C/chem/chemistry-www-sites.html
I am sure that colleagues in other part of Europe, Austalia etc can
provide other alternatives.

An important issue becomes the need to establish automatic
mirrors of the best sites. Unless we do this urgently, the
grid-lock that some expect to occur very soon
in the global Internet may make all this discussion irrelevant anyway.

Dr Henry Rzepa, Department of Chemistry, Imperial College, LONDON SW7 2AY;
rzepa@ic.ac.uk via Eudora 2.1.1; Tel  (44) 171 594 5774; Fax: (44) 171 594
5804.
World-Wide Web URL: http://www.ch.ic.ac.uk/rzepa.html        




From marty@ionchannel.med.harvard.edu  Mon May 15 13:51:51 1995
Received: from ns2.harvard.edu  for marty@ionchannel.med.harvard.edu
	by www.ccl.net (8.6.10/930601.1506) id NAA18002; Mon, 15 May 1995 13:41:41 -0400
Received: by ns2.harvard.edu (5.65/DEC-Ultrix/4.3)
	id AA19527; Mon, 15 May 1995 13:41:32 -0400
Received: from ionchannel.med.harvard.edu by heimdall.med.harvard.edu.med.harvard.edu (4.1/SMI-4.1)
	id AA28994; Mon, 15 May 95 13:35:23 EDT
Received: from [134.174.159.173] by ionchannel.med.harvard.edu via SMTP (931110.SGI/920502.SGI)
	for @heimdall.med.harvard.edu:chemistry@ccl.net id AA00278; Mon, 15 May 95 13:28:20 -0700
Date: Mon, 15 May 95 13:28:20 -0700
Message-Id: <9505152028.AA00278@ionchannel.med.harvard.edu>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
To: chemistry@ccl.net
From: marty@ionchannel.med.harvard.edu (Marty Gallagher)
Subject: differential H-bonds


        Could someone please direct me to references that discuss
pharmacophores that preferentially H-bond with alcohols rather than
corboxylates, and vice versa.  I will summarize if there is interest.


                                Thank you in advance,

                                Marty Gallagher

=========================================================================
Martin J. Gallagher             phone:  (617) 432-1729
Dept. of Neurobiology           fax:    (617) 734-7557
Harvard Medical School          E-mail: marty@ionchannel.med.harvard.edu
220 Longwood Ave                http://ionchannel.med.harvard.edu/~marty
Boston, MA  02115

===========================================================================
Finger, or WWW for PGP Public Key
===========================================================================
-- When I feed the poor, they call me saint. When I ask why the poors do
   not have food, they call me communist - Archbishop Camaran




From jkg1000@cus.cam.ac.uk  Mon May 15 14:05:13 1995
Received: from bootes.cus.cam.ac.uk  for jkg1000@cus.cam.ac.uk
	by www.ccl.net (8.6.10/930601.1506) id NAA17954; Mon, 15 May 1995 13:39:17 -0400
Received: from apus.cus.cam.ac.uk [131.111.8.2] (ident = root) 
	by bootes.cus.cam.ac.uk with smtp 
	(Smail-3.1.29.0 #36) id m0sB3N2-000C0QC; Mon, 15 May 95 17:51 BST
Received: by apus.cus.cam.ac.uk 
	(Smail-3.1.29.0 #36) id m0sB3N2-00034IC; Mon, 15 May 95 17:51 BST
Date: Mon, 15 May 1995 17:51:50 +0100 (BST)
From: "J.K. Gregory" <jkg1000@cus.cam.ac.uk>
To: chemistry@ccl.net
cc: Jiri Czernek <czernek@chemi.muni.cz>
Subject: ab initio request
Message-ID: <Pine.SUN.3.91.950515174943.10659B-100000@apus.cus.cam.ac.uk>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII



A summary of the replies to the following message:

> I would like to know if there is an ab initio program that will allow me
> to apply a static electric field to a molecule and still be able to
> calculate derivatives. I want to calculate a reaction path in the presence
> of a field and so I still need the derivatives. Cadpac can apply a field
> but cannot do derivatives in this field. Many thanks in advance. 

Hi,
   GAMESS can now do first derivatives (and thus geometry optimizations) with
a static electric field. If you are interested send an email to that effect
to mike@si.fi.ameslab.gov

Thanks,
Brett

-- 
____________________________________
Brett Bode
201 Spedding Hall
Iowa State University
Ames Iowa 50011
(515) 294-4604   FAX (515) 294-0105
E-Mail: brett@si.fi.ameslab.gov
____________________________________


I'm not sure if what we've got will meet your needs -- but Release 4.5
of HyperChem will do ab initio calculations, including gradients, and
allows the user to include the effects of point charges from other atoms
in the system as a classical static field.  If you need a homogeneous
field, then I'm afraid that we can't help.  Release 4.5 for Windows will 
be shipping in a few weeks; the SGI version will be along by the end
of July.

Regards,
Joel
 
------------
Joel Polowin, Ph.D.   Manager, Scientific Support
Email to: polowin@hyper.com 

Hypercube Inc, 419 Phillip St, Waterloo, Ont, Canada N2L 3X2 (519)725-4040
Info requests to: info@hyper.com    Support questions to: support@hyper.com
Email group: Send "subscribe hyperchem" to hyperchem-request@hyper.com
WWW: http://www.hyper.com/


I guess that Gamess ( mike@si.fi.ameslab.gov (Mike Schmidt) ) and Gaussian
allow such calculations.
DMol (DFT) too.

Thank you for sharing, if it is possible, replies you could receive. I am
interested in answers you could receive.

Regards,

Frederic Bouyer

____________________________________________________________________
Frederic BOUYER
Laboratoire d'Electrochimie et de Chimie Analytique
Equipe "Reactivite en Milieux Ioniques Liquides" (G. PICARD)
ENSCP
11, rue Pierre et Marie Curie
75231 PARIS Cedex 05
FRANCE
Tel : (33)-1-43-54-53-84 ou (33)-1-44-27-67-51 ou (33)-1-44-27-66-94
Fax : (33)-1-44-27-67-50
E-mail : bouyer@ext.jussieu.fr
http://alcyone.enscp.jussieu.fr/  created, in progress ...
http://alcyone.enscp.jussieu.fr/Pages/LECA/GP/frederic.html


Jon,

Turbomole (ab initio package from Biosym) has the capabilty to calculate 
energy 1st derivatives in the presence of an external electric field.

                                  - Andy

-- 
================================================================
Andrew C. Scheiner                      Phone: (619) 546-5346
Biosym Technologies, Inc.               scheiner@biosym.com             
================================================================

Gaussian can do derivatives (first and second)
including the static electric field at differents leves 
levels of theory.
I have been doing these calculations since 1989.
Someone else in our group has aldo done IRC calculations
including the electric field. (Jordi Mestres)
Best regards,
Jose L. Andres
Institute of Computational Chemistry
Dept. of Chemistry
University of Girona
c/ albereda 3-5
17071 Girona
SPAIN



From herbert.homeier@rchs1.chemie.uni-regensburg.de  Mon May 15 14:22:46 1995
Received: from comsun.rz.uni-regensburg.de  for herbert.homeier@rchs1.chemie.uni-regensburg.de
	by www.ccl.net (8.6.10/930601.1506) id OAA19069; Mon, 15 May 1995 14:18:35 -0400
Received: from rchs1.chemie.uni-regensburg.de by comsun.rz.uni-regensburg.de with SMTP id AA15280
  (5.65c/IDA-1.4.4 for <CHEMISTRY@ccl.net>); Mon, 15 May 1995 20:16:12 +0200
Received: by rchs1.chemie.uni-regensburg.de (4.1/URRZ-sub (1.5))
	id AA16045; Mon, 15 May 95 20:16:43 +0200
Date: Mon, 15 May 95 20:16:43 +0200
From: Herbert Homeier (t4720) <Herbert.Homeier@chemie.uni-regensburg.de>
Message-Id: <9505151816.AA16045@rchs1.chemie.uni-regensburg.de>
To: CHEMISTRY@ccl.net, chem-comp@mailbase.ac.uk, na.digest@na-net.ornl.gov,
        scicomp@informatik.tu-muenchen.de, maple-list@daisy.uwaterloo.ca,
        molecular-dynamics-news@mailbase.ac.uk
Subject: Server Announcement
Cc: sweidman@nas.edu



>>>>>>>>>>>>>>>>>>>>>>>>>>> Announcement <<<<<<<<<<<<<<<<<<<<<<<<<<<

The combined WWW/gopher/ftp server at 

              rchs1.uni-regensburg.de (IP 132.199.48.1) 

now provides

              Preprints, Technical Reports, and Theses

in the fields Computational Chemistry, Scientific Computing, and 
Numerical Analysis.  
------------------------------------------------------------------
WWW:   http://rchs1.uni-regensburg.de:80/preprint.html
       ftp://rchs1.chemie.uni-regensburg.de/pub/preprint
       gopher://rchs1.chemie.uni-regensburg.de:70/11./pub/preprint
------------------------------------------------------------------
gopher: gopher rchs1.uni-regensburg.de
           -->  8.  Data files (= /pub )
              --> 45.  preprint
------------------------------------------------------------------
ftp:   ftp rchs1.uni-regensburg.de
       Name(...) : anonymous
       Password: <your e-mail address>
       cd /pub/preprint


---------------------------------------------------------------
Dr. Herbert H. H. Homeier
Institut fuer Physikalische und Theoretische Chemie
Universitaet Regensburg
D-93040 Regensburg, Germany
Phone: +49-941-943 4720                FAX  : +49-941-943 2305
email: na.hhomeier@na-net.ornl.gov
<A HREF="http://rchs1.uni-regensburg.de/%7Ec5008/">HOMEPAGE</A>
---------------------------------------------------------------

From mvaul@altern.com Fri May 12 06:48:07 1995
Received: from fog  for mvaul@altern.com
	by www.ccl.net (8.6.10/930601.1506) id GAA27845;
	Fri, 12 May 1995 06:48:03 -0400
Received:  by fog  (Linux Smail3.1.29.1 #1)
	 id m0s9uIz-0003I7C; Fri, 12 May 95 12:58 GMT
Message-Id: <m0s9uIz-0003I7C@fog>
Date: Fri, 12 May 95 12:58 GMT
To: chemistry@ccl.net
Subject: heat of formation
From: mvaul@altern.com (mvaul)



Do you know calculation codes available to compute heat of formation for
nitro compounds.? I ve attemped to use MOPAC 6 but there s a big difference
with the EOF found in the scentific litterature.


thanks for replying.
mvaul@altern.com (mvaul)


From toukie@zui.unizh.ch Mon May 15 06:46:13 1995
Received: from rzusuntk.unizh.ch  for toukie@zui.unizh.ch
	by www.ccl.net (8.6.10/930601.1506) id GAA08896; Mon, 15 May 1995 06:46:09 -0400
Received: by rzusuntk.unizh.ch (4.1/SMI-4.1.9)
	id AA29700; Mon, 15 May 95 12:46:03 +0200
X-Nupop-Charset: Swiss
Date: Mon, 15 May 1995 12:45:56 +0100 (MET)
From: "Hr Dr. S. Shapiro" <toukie@zui.unizh.ch>
Sender: toukie@zui.unizh.ch
Reply-To: toukie@zui.unizh.ch
Message-Id: <45957.toukie@zui.unizh.ch>
To: chemistry@ccl.net
Subject: Conformer generator for MOPAC



Dear Colleagues;

     Is anyone aware of a conformer generating programme that can be inter-
faced with MOPAC 6.0 or MOPAC7 (or possibly MOPAC 93)?  The programme I seek
should be able to rotate designated bonds in a molecule, systematically
(fixed rotational angle) and/or (preferably) using a Monte Carlo stochastic
procedure, to generate an ensemble of molecules plus their Z-matrices (or
some other coordinate file format that can be readily converted to a Z-
matrix); I would then wish to feed the resultant Z-matrices one at a time
into MOPAC in order to obtain heats of formation and other information.

     Thanks in advance to all responders.


Sincerely,

(Dr.) S. Shapiro
Institut fuer orale Mikrbiologie und allgemeine Immunologie
Zentrum fuer Zahn-, Mund- und Kieferheilkunde der Universitaet Zuerich
Plattenstrasse 11
Postfach
CH-8028 Zuerich 7
Switzerland

Internet: toukie@zui.unizh.ch
FAX-nr: ( ... + 1) 261'56'83


From TSHEHLA@che.und.ac.za  Mon May 15 15:51:50 1995
Received: from owl.und.ac.za  for TSHEHLA@che.und.ac.za
	by www.ccl.net (8.6.10/930601.1506) id PAA22099; Mon, 15 May 1995 15:45:23 -0400
Received: from Charon1.CC.und.ac.za by owl.und.ac.za with SMTP (PP) 
          id <04706-6@owl.und.ac.za>; Mon, 15 May 1995 17:05:15 +0200
Received: From STUD-AFF/WORKQUEUE by charon1.cc.und.ac.za via Charon-4.0A-VROOM 
          with IPX id 100.950515161040.2880; 15 May 95 17:05:14 -0200
Message-ID: <MAILQUEUE-101.950515161016.288@che.und.ac.za>
From: TSHEHLA <TSHEHLA@che.und.ac.za>
Organization: University of Natal - Durban
To: chemistry@ccl.net
Date: Mon, 15 May 1995 16:10:16 +0200 (SAST)
Subject: Converting g92 standard orientation to a z-matrix orientation...
Priority: normal
X-mailer: PMail v3.0 (R1a)


Hi out there!

Does anyone out there have a fortran routine that converts g92 
standard orientation into a z-matrix. 

Any pointers will be appreciated.

Thanking you all in  advance
T M Tshehla

From overney@pegasus.unm.edu  Mon May 15 16:06:50 1995
Received: from pegasus.unm.edu  for overney@pegasus.unm.edu
	by www.ccl.net (8.6.10/930601.1506) id QAA22402; Mon, 15 May 1995 16:00:51 -0400
Received: by pegasus.unm.edu (Smail3.1.28.1 #7)
	id m0sB6Ju-0000PlC; Mon, 15 May 95 14:00 MDT
Date: Mon, 15 May 1995 14:00:50 -0600 (MDT)
From: "gregor t. overney" <overney@unm.edu>
To: chemistry@ccl.net
cc: Gregor Overney <overney@unm.edu>
Subject: Are methods based on DFT ab initio?
Message-ID: <Pine.A32.3.91.950515135852.17302A-100000@pegasus.unm.edu>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII


Are methods based on density functional theory (DFT) ab initio?
---------------------------------------------------------------

   Recently, I had a conversation about theories based on DFT with some of 
my colleagues. Some support Dr. Jerzy Cioslowski's idea to put those 
methods into the same category as semiempirical methods and some, including 
myself, do not.

   I would like to ask quantum chemists to answer the above question. Are 
methods based on density functional theory (DFT) of an ab initio nature? 
If yes, why? And if not, why not?

Thanks for your comments.

Gregor


--------------------------------------------------------------------------
Gregor T. Overney, Ph.D.                           Department of Chemistry
Senior Research Associate                     The University of New Mexico
                                                Albuquerque, NM 87131-1096

Voice: (505) 277-1665                                  FAX: (505) 277-2609
                               WWW:  http://enke.unm.edu/gregor/gregor.htm
-------------------------------------------------------------------------- 



From THOMPSON@bobcat.csc.wsu.edu  Mon May 15 16:21:52 1995
Received: from bobcat.csc.wsu.edu  for THOMPSON@bobcat.csc.wsu.edu
	by www.ccl.net (8.6.10/930601.1506) id QAA22851; Mon, 15 May 1995 16:20:12 -0400
Date: Mon, 15 May 1995 13:07:54 -0700 (PDT)
From: "Steve Thompson: VADMS genetics" <THOMPSON@JAGUAR.CSC.WSU.EDU>
To: Sogin@evol1.MBL.EDU, gary@phylo.life.uiuc.edu, Davison@UH.EDU,
        Joe@Genetics.Washington.EDU, gilbertd@bio.indiana.edu,
        danj@dev.gdb.ORG, KRobison@nucleus.harvard.edu,
        ernest@lenti.med.umn.edu, tree@ag.Arizona.EDU
X-Vmsmail-To: @MAILDIS:EDUCATION.DIS
Message-Id: <950515130754.20400abe@JAGUAR.CSC.WSU.EDU>
Subject: PSB Biocomputing Educ' Call: final version


Dear Colleague,

Please find enclosed a "Call for Papers, Demonstrations and Participation" for
the upcoming workshop on Biocomputing Education: Challenges and Opportunities
to be held as part of the First Pacific Symposium on Biocomputing (PSB-I), the
agenda of which can be found following the Call.  

We are excited about this meeting and the workshop.  To the best of our
knowledge (and  please correct us if you have knowledge that we are wrong),
this will be the first time that a forum on educational issues will be
included in a meeting on computational approaches to molecular biology.

Please take a few minutes to fill out and return the enclosed questionnaire. 
We would especially like your comments regarding what you think are the most
important issues in biocomputing education.  Plan to submit a paper if you
can, but at least mark the meeting on your calendar and consider joining us in
Hawaii next year.

	Regards,

           Susan J. Johns    Steven M. Thompson    A. Keith Dunker


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


              CALL FOR PAPERS, DEMONSTRATIONS AND PARTICIPATION

            Biocomputing Education: Challenges and Opportunities

                   First Pacific Symposium on Biocomputing
        Ritz Carlton Hotel, Big Island, Hawaii --- January 3-6, 1996

           Susan J. Johns, Steven M. Thompson, and A. Keith Dunker
Center for Visualization, Analysis and Design in the Molecular Sciences (VADMS)
              and the Department of Biochemistry and Biophysics
                         Washington State University
                       Pullman, WA  99164-1224 & 4660
                      Phone: (509) 335-0424 & 335-5322
                       FAX: (509) 335-0540 & 335-9688
                     E-mail: prcadms@jaguar.csc.wsu.edu
                         thompson@jaguar.csc.wsu.edu
                          dunker@jaguar.csc.wsu.edu


The need for a forum on educational issues: 

Philosophically, we have come to the view that computer science is to molecular
biology as calculus is to physics, yet at present there is really no well
defined curriculum for computational molecular biology.  Although specific
individuals have developed courses or workshops, educational materials such as
textbooks or laboratory exercises based on existing courses or workshops are
not widely available.  In addition to the absence of formal materials, there is
also a lack of communication among those of us who are now teaching courses in
this domain.
	
Correcting the deficiencies regarding the lack of educational materials and the
lack of communication on educational issues represents both a challenge and an
opportunity for the community of scientists who are currently doing research
in biocomputing.

A workshop:

Recognizing the need for the development of an educational forum, the Pacific
Symposium on Biocomputing (PSB) has included our workshop on biocomputing
education as part of its overall program.  Our hope is that this workshop on
biocomputing education will become an important node with regard to the
dissemination of educational materials, information, and approaches in this
field.

To the end of improving communication, we encourage your formal or informal 
participation at our workshop on educational issues.  Bring your course
outlines, syllabi, laboratory exercises, videotapes, CD-ROMS or whatever
educational materials you have developed or that you use for teaching
computational approaches to biology, especially molecular biology.

We hope to have a very open discussion about what works and what does not and
what needs to be done in the future.

Submission of papers:

We also encourage you to submit full technical papers or abstracts for posters
on biocomputing education to be included in the general refereeing process. 
We envision that such papers could range from philosophical discussions on
biocomputing education to the nuts-and-bolts of particular courses or
workshops that are enjoying significant success.  Given a sufficient number of
refereed papers submitted on biocomputing education, additional time will be
allocated by the PSB organizers for their presentation.

Submitted papers and abstracts will be carefully peer reviewed by at least 3
independent referees for publication in an archival proceedings.  Publication
of a full paper is required for oral presentation.  Submissions from
researchers who desire to present their work at the conference without the
publication of a full paper are eligible for exhibition space in the poster and 
demonstration sessions.

Publication:

In addition to traditional print options, PSB is exploring the possibility of
publishing its proceedings as the first in a series of peer-reviewed
electronic conference publications from a major scientific publisher.  Authors
would have the ability to include extensive color graphics, animations,
datasets and source code in papers published electronically and to obtain
printed versions of individual papers by facsimile.  The publisher would
offer attractive licensing arrangements for the series, intending to insure
the greatest possible availability in libraries and other institutions. 
Whether we opt for electronic publication or not, we hope to have the contents 
of the proceedings indexed in Medline and elsewhere.  PSB is also exploring the
possibility of CD-ROM distribution, as well as a follow-up book with extended
versions of the best papers.  We hope that these forward-looking publication
efforts will encourage you to submit your best upcoming work to this
conference. 

Key dates:

Immediate 	--	Return of questionnaire
June 15		--	Abstract of papers, presentation or demonstration
July 1		--	Feedback from us on abstracts
July 27		--	Full papers due
September 11	--	Notification of acceptance, with comments
October 2	--	Final, revised manuscripts due

Conference registration for authors is required along with the submission of
the final paper on October 2.  There will be an early registration discount
for people who register on or before that date.


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

               First Pacific Symposium on Biocomputing (PSB-I)

        Ritz Carlton Hotel, Big Island, Hawaii --- January 3-6, 1996

The conference will consist of several tracks:

§ The Evolution of Biomolecular Structures and the Structure of Biomolecular
  Evolution

	Chairs:  Richard A. Goldstein & Russ B. Altman
	Contact: altman@comis.stanford.edu

§ Interactive Molecular Visualization

	Chairs:  Michael Teschener and Chris Henn
	Contact:  micha@basel.sig.com

§ Stochastic Models, Formal Systems and Algorithmic Discovery for Genome
  Informatics

	Chairs: Tom Head, Takashi Yokomori, Katsumi Nitta & Kiyoshi Asai
	Contact:  tom@binghamton.edu  

§ Discovering, Learning, Analyzing and Predicting Protein Structure 

	Chairs: Richard H. Lathrop & A. Keith Dunker
	Contact: dunker@jaguar.csc.wsu.edu

minitracks:

§ Population Modeling

	Chair:  John Conery
	Contact: conery@cs.uoregon.edu

§ Hybrid Quantum and Classical Mechanical Methods for Studying Biopolymers in 
  Solution

	Chairs:  Martin Field & Jiali Gao
	contact:  mjfield@ubs.fr

§ Models of Control Systems in Biology

	Chair:  Seth Michelson
	contact:  seth.michelson@syntex.com

§ Computational Studies on the Design of Protease Inhibitors

	Chair:  C. N. Hodge
	Contact:  hodgecn@lldmpc.dnet.dupont.com
		
and workshops:

§ Internet Tools for Computational Biology

	Chair:  Reinhard Doelz
	Contact:  doelz@ubaclu.unias.ch

§ Biocomputing Education: Challenges and Opportunities

	Chairs:  Susan J. Johns, Steven M. Thompson & A. Keith Dunker
	Contact:  thompson@jaguar.csc.wsu.edu

Key dates:	July 27	     -- Full papers due
		September 11 --	Notification of acceptance, with comments
		October 2    --	Final, revised manuscripts due


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


   Pacific Symposium on Biocomputing --- Educational Issues Questionnaire

Please provide us with the following information:

	Name:

	E-Mail:

	Address: 								

	Telephone:		FAX:


General comments on Biocomputing Education:



Courses or workshops you are teaching in the broadly defined field of
"Biocomputing" and the year such courses or workshops began:



A brief statement of your willingness to participate in the 1996 meeting as one:

§ Who would submit a paper by early June describing course, workshop or
  curriculum issues and who would subsequently attend the meeting to present 
  the paper if accepted;

	(yes or no): 

	if yes, tentative title:

§ Who would plan to attend the meeting, participate in panel discussions,
  software demonstrations, and workshops on educational issues, but who 
  would not submit a paper; 

	(yes or no):

§ Who might or might not attend the meeting, but who would be willing to 
  review papers.

	(yes or no):

Names and addresses of others who might be interested in participating in the
educational session, especially the names and addresses of possible referees:





Finally, as there might be some funds available to support speakers, please
indicate whether you would require financial support to attend the meeting as
a speaker.  Funds would be absolutely required, 

	yes or no:

Please FAX the filled-out questionnaire to (509) 335-9688 

or e-mail to: 	thompson@jaguar.csc.wsu.edu

or mail to:	Steve Thompson
		Washington State University
		VADMS Center
		Pullman WA 99164-1224


From nobes@theor.ch.cam.ac.uk  Mon May 15 17:21:51 1995
Received: from ppsw3.cam.ac.uk  for nobes@theor.ch.cam.ac.uk
	by www.ccl.net (8.6.10/930601.1506) id RAA24097; Mon, 15 May 1995 17:14:30 -0400
Received: from theor.ch.cam.ac.uk (actually host gmos.ch.cam.ac.uk) 
          by mauve.csi.cam.ac.uk with SMTP-CAM (XTPP8.1) as ppsw.cam.ac.uk;
          Mon, 15 May 1995 22:13:54 +0100
Received: by theor.ch.cam.ac.uk (931110.SGI/930416.SGI)	for @ppsw.cam.ac.uk:chemistry@ccl.net 
          id AA19817; Mon, 15 May 95 22:15:01 +0100
From: nobes@theor.ch.cam.ac.uk (Ross Nobes)
Message-Id: <9505152115.AA19817@theor.ch.cam.ac.uk>
Subject: Use of localized orbitals
To: chemistry@ccl.net
Date: Mon, 15 May 1995 22:15:01 +0100 (BST)
X-Mailer: ELM [version 2.4 PL23]
Content-Type: text
Content-Length: 617       


Could anyone please point me to a recent review on the use of localized
orbitals in chemistry?

Thanks,
Ross
-- 
+---------------------------------------------------------------------+
| Ross Nobes                                                          |
| Department of Chemistry            Phone:  + 44 1223 336384         |
| University of Cambridge            Fax:    + 44 1223 336362         |
| Lensfield Road                                                      |
| Cambridge CB2 1EW, UK              E-mail: nobes@theor.ch.cam.ac.uk |
+---------------------------------------------------------------------+


From elewars@alchemy.chem.utoronto.ca  Mon May 15 18:36:50 1995
Received: from alchemy.chem.utoronto.ca  for elewars@alchemy.chem.utoronto.ca
	by www.ccl.net (8.6.10/930601.1506) id SAA25392; Mon, 15 May 1995 18:27:47 -0400
Received: (from elewars@localhost) by alchemy.chem.utoronto.ca (8.6.10/8.6.10) id SAA20006 for chemistry@ccl.net; Mon, 15 May 1995 18:27:43 -0400
Date: Mon, 15 May 1995 18:27:43 -0400
From: "E. Lewars" <elewars@alchemy.chem.utoronto.ca>
Message-Id: <199505152227.SAA20006@alchemy.chem.utoronto.ca>
To: chemistry@ccl.net
Subject: RE IS DFT AB INITIO?


Those interested in this question may want to think about the remarks in
*Quantum Chemistry* by Ira N. Levine (4th ed., 1991), p 525:
"Because density functional calculations do not use the exact E(XC) and 
V(XC) [in the Kohn-Sham eqs on p 521 & 522] they are not, strictly speaking,
ab initio calculations.  However, they do not use parameters fitted to 
experimental data, as do ...semiempirical methods..., and so are closer in
spirit to ab initio calculations than to semiempirical ones."
Errol Lewars
===

From dickson@zinc.chem.ucalgary.ca  Mon May 15 19:21:54 1995
Received: from zinc.chem.ucalgary.ca  for dickson@zinc.chem.ucalgary.ca
	by www.ccl.net (8.6.10/930601.1506) id TAA25858; Mon, 15 May 1995 19:13:30 -0400
Received: by zinc.chem.ucalgary.ca (AIX 3.2/UCB 5.64/4.03)
          id AA33725; Mon, 15 May 1995 17:15:47 -0600
Date: Mon, 15 May 1995 17:15:47 -0600
From: dickson@zinc.chem.ucalgary.ca (Ross M. Dickson)
Message-Id: <9505152315.AA33725@zinc.chem.ucalgary.ca>
To: chemistry@ccl.net, overney@unm.edu
Subject: Re:  CCL:Are methods based on DFT ab initio?
Cc: <overney@unm.edu>



I don't normally get into nomenclature arguments, but I'll bite this
time.  I'm not familiar with Prof. Cioslowski's arguments in favour of
calling DFT "semi-empirical", so I can't answer them directly, but I
take the position that DFT is better characterized as a branch of the
ab initio family.

I most often hear this question raised in connection with one
functional or another which contains some parameter (usually one,
sometimes as many as three) determined by fitting to experiment.  A
classic example is the local exchange functional variously known as
X-alpha, Hartree-Fock-Slater (HFS), or Slater exchange.  There were
non-empirical physical arguments for a value of either 2/3 or 1 (one)
for alpha.  Eventually many workers settled on a compromise value of
0.7 for empirical reasons.

Does this make HFS a semi-empirical theory?  I think not:  There is
one and only one adjustable parameter, and the functional should be
equally applicable in any part of any molecule.  If you insisted on
calling such a scheme semi-empirical, then you'd have to call Hartree-
Fock frequencies adjusted by the famous 10% factor semi-empirical as
well.  (If you already do, that's fine with me.  You're a purer man
than I am, Gunga Din.)  In a semi-empirical method, parameters are
chosen for *each atom*, and if you don't have parameters for cesium,
you simply cannot do semi-empirical calculations on cesium chloride.
But once you have this one DFT parameter -- or even two or three -- 
you can do calculations anywhere on the periodic table (modulo
relativity).

Now there have been calculations carried out in which this HFS alpha
parameter *was* different for each atomic environment (the so-called
muffin-tin method), and those I *would* call semi-empirical.  But 
that does not represent the main body of present-day density functional
theory.

There are certainly more recent examples of density functionals
containing one or more fitted parameters; my former boss Axel Becke
frequently ends up with one unknown left over when he's inventing a new
functional.  Nevertheless, in every case I know of the result after the
fitting has been a density functional intended to be universally
applicable.  What we are pursuing, after all, is Hohenberg's and Kohn's
universal functional of the density -- you only need, in principle, one
functional and you can then calculate all nondegenerate ground states.
If we try to derive this functional from physics, we are working "from
first principles" -- or "ab initio".

The other sense in which I can imagine DFT being characterized as
"semi-empirical" is the manner in which the recent proliferation of
functionals has been greeted by the user community.  I've seen more
papers and talks and posters than I can count that had the nature of
"try six different density functionals and see which one gives the best
results for my systems."  If some thought then goes into the
relationship between the underlying physics of the functionals and
their performance, this is quite reasonable.  But if the lowest average
deviation from experiment -- sometimes by a vanishingly small margin --
is then taken as the only reason for choosing functional X over
functional Y for further studies on analogs of these systems, then we
are at some risk of passing straight through semi-empirical methods
into pure empiricism, and neither DFT nor semi-empirical specialists
might care to claim such work as characteristic of their field.
(Although I should confess I'm prone to this disease myself. Mea culpa.)

In conclusion, I don't really care what DFT is called except inasmuch
as naming affects understanding.  I myself try not to use language
which classes DFT as either ab initio or semi-empirical, because those
terms have accreted fairly specialized meanings over the last twenty
years and DFT really doesn't fit comfortably into either.


Cheers,
Ross M. Dickson, Ph.D. (dickson@zinc.chem.ucalgary.ca)
Chemistry Dept., The University of Calgary, Alberta, Canada.

From tony@schroeder.newcastle.edu.au  Mon May 15 21:21:51 1995
Received: from schroeder.newcastle.edu.au  for tony@schroeder.newcastle.edu.au
	by www.ccl.net (8.6.10/930601.1506) id VAA26714; Mon, 15 May 1995 21:11:36 -0400
Received: by schroeder.newcastle.edu.au (AIX 3.2/UCB 5.64/4.03)
          id AA20533; Tue, 16 May 1995 11:11:12 GMT
Date: Tue, 16 May 1995 11:11:11 +0000 (CUT)
From: Tony Dyson <tony@schroeder.newcastle.edu.au>
To: Computational Chemistry List <chemistry@ccl.net>
Subject: CCL: Is DFT ab initio?
Message-Id: <Pine.A32.3.91.950516110935.21038A-100000@schroeder.newcastle.edu.au>
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII



It seems to me that the choice of pseudopotentials goes a long way 
towards determining whether a DFT calculation can really be called ab 
initio. Comments?

	Tony

================================================================

  Mr. Anthony J. Dyson		tony@schroeder.newcastle.edu.au
  Dept. of Physics		phone: +49 21 5425
  University of Newcastle	fax:   +49 21 6907
  Callaghan, Australia, 2308

================================================================


From overney@pegasus.unm.edu  Mon May 15 21:35:05 1995
Received: from pegasus.unm.edu  for overney@pegasus.unm.edu
	by www.ccl.net (8.6.10/930601.1506) id VAA26663; Mon, 15 May 1995 21:07:53 -0400
Received: by pegasus.unm.edu (Smail3.1.28.1 #7)
	id m0sBB6z-0000NuC; Mon, 15 May 95 19:07 MDT
Date: Mon, 15 May 1995 19:07:49 -0600 (MDT)
From: "gregor t. overney" <overney@unm.edu>
To: chemistry@ccl.net
cc: Gregor Overney <overney@unm.edu>
Subject: Are methods based on DFT ab initio? (More information)
Message-ID: <Pine.A32.3.91.950515185831.153106B-100000@pegasus.unm.edu>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII


Are methods based on density functional theory (DFT) ab initio? A quick
summary
-----------------------------------------------------------------------

   I am very grateful for the feedback I am currently receiving on this
issue. So far, I can subdivide the different opinions into three groups
(one more than I thought). The first one wants to have DFT-based methods
to be considered as ab initio (which is my personal opinion). The second
one likes to put it into a category placed between semiempirical and ab
initio, where some researchers still like to use the expression "from
first principles" but not "ab initio". (And I always thought that ab
initio means nothing more than from first principles). Last but not least,
the third group sees DFT-based methods to be more of a semiempirical
rather than an ab initio nature. 

   Since quite a few readers asked me to be more specific with my
statement regarding Dr. Jerzy Cioslowski's point of view, I cite from the
conclusions of a book contribution written by Dr. Jerzy Cioslowski
("Reviews In Computational Chemistry", edited by K.B. Lipkowitz and D.B.
Boyd, VCH Publishers, Inc. 1993, Volume 4, Chapter 1, "Ab Initio
Calculations on Large Molecules: Methodology and Applications"): 

   "A subject that has not been covered here is that of the methods based
on density functional theory (DFT). It is the author's view that these
methods, although without doubt having a legitimate place in quantum
chemistry, are more of a semiempirical rather than an ab initio (as often
claimed) nature. The functionals used in the DFT programs (such as DMOL
[1]) are quite simple, and it is not currently known how they can be
methodically improved. This is in contrast to the molecular orbital
methods, in which the accuracy is limited only by the available computer
resources." 

[1] B. Delley, J. Chem. Phys., 92, 508 (1990). 

   Some people have pointed out that it is not so important how we are
going to classify DFT-based methods. But I think that expressions in
quantum theory shall be exactly defined to make sure that the risk of mis-
communication is strongly reduced. 

Gregor Overney

--------------------------------------------------------------------------
Gregor T. Overney, Ph.D.                           Department of Chemistry
Senior Research Associate                     The University of New Mexico
                                                Albuquerque, NM 87131-1096

Voice: (505) 277-1665                                  FAX: (505) 277-2609
                               WWW:  http://enke.unm.edu/gregor/gregor.htm
-------------------------------------------------------------------------- 



