From gadre@unipune.ernet.in  Sat Aug  2 02:14:59 1997
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Date: Sat, 2 Aug 1997 10:23:04 -0500 (GMT)
From: gadre@unipune.ernet.in (Prof.Gadre Faculty-Chemistry)
Message-Id: <199708021523.KAA04320@unipune.ernet.in>
To: CHEMISTRY@www.ccl.net
Subject: Registration Fees : Extension of Deadline
Cc: gadre@unipune.ernet.in




 Deadline :  Extension : Registration Fees for ICCCRE 

Dear Sirs : The last date of payment of Registration Fees for the
conference (US$150 for students and $300 for others ) is now extended
to August 31, 1997. This has been done keeping in mind numerous
requests for allowing credit card payments. We have so far been
unable to accept payment by credit cards.
The payment is still to be made made by a Banker's draft drawn on any
bank that has a branch in Mumbai (Bombay) payable to
 "The Registrar, University of Pune(ICCCRE)".

The draft should be mailed to Professor S. R. Gadre
                              Department of Chemistry
                              University of Pune
                              Pune-411007. INDIA.
We have problems accepting CREDIT CARD payments at this moment.
Your co-operation in this matter is solicited.
Thanks and looking forward to meet you in Pune in January 1998!
Shridhar Gadre, Convenor, XII ICCCRE.



From yubofan@guomai.sh.cn  Sat Aug  2 10:15:03 1997
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From: "Yubo Fan" <yubofan@guomai.sh.cn>
To: <chemistry@www.ccl.net>
Subject: Retell me a literature mentioned weeks ago.
Date: Sat, 2 Aug 1997 22:03:42 +0800
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Hi,

I read a message about a literature of interact between benzene molecules.
It is an article of J. C. P. or J. P. C. in 1996. My OS was cracked
occasionally. I lost this message.

If somebody know this message, please email me. Thank you very much.

With Best Regards

Y. Fan

                         ( @ @ )
 .------------------oOOo----(_)----oOOo---------------------------.
| Yubo Fan                     | E-mail: yubofan@guomai.sh.cn    |
| Organic Synthesis Lab        |         yubofan@fudan.edu.cn    |
| Chemistry Department         | Phone:  086-21-65492222x4294    |
| Fudan University             | Fax:    086-21-65341642         |
| Shanghai, 200433       .oooO |                                 |
| P. R. China            (   ) | Oooo.                           |
 .-------------------------\ (----(   )---------------------------.
                           \_)    ) /
                                 (_/



From ccl@www.ccl.net  Mon Aug  4 07:15:27 1997
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From: Marek Skowronek <mbskowro@cyf-kr.edu.pl>
Message-Id: <199708041107.NAA26641@kinga.cyf-kr.edu.pl>
Subject: Oxford&Cambridge Data Base
To: chemistry@ccl.net
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Dear Netters,

I should be very grateful if send me some information (www page or
something like that) about CAMBRIDGE CRYSTALOGRAPHIC DATA CENTRE , OXFORD
DATABASE, or related databases. 

                                            Thank you in advance 
                                            Marek Skowronek 


From shokhen@post.tau.ac.il  Mon Aug  4 08:15:28 1997
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Date: Mon, 4 Aug 1997 14:28:24 +0300 (IDT)
From: shochen michael <shokhen@post.tau.ac.il>
To: chemistry@www.ccl.net
Subject: Reliability of the solvation models in GAUSSIAN
Message-ID: <Pine.SGI.3.96-heb-2.07.970804130647.5780A-100000@etgar.tau.ac.il>
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 Dear Netters

 In my current work I need to estimate oxidation potentials
for sevelal molecules. In other words, I need to calculate
the energy difference between ground state and cation-radical
(lowest doublet). I have experimental estimations of the oxidation
potentials for some of my compounds in water solution. All of my
molecules contain three sulfonic groups (SO3-), which of course are
ionized in water. Thus, I have as a ground state anionic species with
the charge -3, which do not exist in vacuum as systems with negative 
orbital enrgies of their HOMO (the oxidized form has the charge -2).
Vacuum calculations are irrelevant to my compounds, so I have used
a reaction field model implemented in GAUSSIAN-94 to simulate water
solution. I have used IPCM model with dielectric constant 80.
The level of quantum calculations was B3LYP/6-31G* (my molecules are very
big, so I can't use more extensive basis set with diffuse functions).
Unfortunately, for several cases I got very big (more than 1 eV)
difference between the calculated in my model and experimental values
of the oxidation potentials.
  My question is: How really are reliable the estimations of the solvation
effects in the IPCM model? Do somebody know references on examples
providing the comparison between theoretical and experimantal estimations
of solvation energies, or any physical values, which
are dependent on the solvation effects for the IPCM model ?

Thank you in advance.
Michael     
*********************************************************

Dr. Michael Shokhen
Senior researcher,
Department of Biochemistry,
G.S.Wise Faculty of Life Sciences,
Tel-Aviv University,
69978, Tel-Aviv, Israel.
Fax: 972-3-6415053
Email: shokhen@etgar.tau.ac.il

*********************************************************



From cdac.ernet.in!gadre@parcom.ernet.in  Mon Aug  4 10:15:27 1997
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From: gadre@cdac.ernet.in
Message-Id: <9708041316.AA16480@parcom.cdac.ernet.in>
To: CHEMISTRY@www.ccl.net
Subject: Basis sets for cations




Dear Sirs :
	Could someone provide me with the all electron 6-31G** basis sets
for the following cations?
Ca2+, K+, Na+, Mn2+, Fe2+ and Zn2+.
Thanks in advance.
Shridhar Gadre 
e-mail : gadre@parcom.ernet.in


From ccl@www.ccl.net  Mon Aug  4 10:21:49 1997
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Date: Mon, 4 Aug 1997 09:40:58 -0400
To: chemistry@ccl.net
From: cal@TC.Cornell.EDU (Linda Callahan)
Subject: Symposium Announcement
Cc: cal@TC.Cornell.EDU




Structural Biology Symposium

The Cornell Theory Center (CTC) announces its fifth annual symposium for
biomedical scientists. This year's symposium, to be held October 7 and 8 on
the Cornell University campus, will highlight research being done in the
field of structural biology. The symposium is funded by the National
Center for Research Resources at the National Institutes of Health as part
of CTC's Parallel Processing Resource for Biomedical Scientists.

Among the speakers:
Paul Beroza,  Scripps Research Institute
William Eaton, NIH
Robert Jernigan, NIH
Andrej Kolinski, Scripps Research Institute
Thanasis Panogiotopoulos, Cornell
Andrej Sali, Rockefeller
Peter Wolynes, University of Illinois
Michael Zerner, University of Florida


Additional information and registration form can be found at
http://www.tc.cornell.edu/Events/Structural.Biology.97/index.html or
contact Donna Smith - donna@tc.cornell.edu




From peter@cherwell.com  Mon Aug  4 12:31:43 1997
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Date: Mon, 04 Aug 1997 17:08:07 +0100
To: chemistry@www.ccl.net
From: Peter Tebbutt <peter@cherwell.com>
Subject: ChemSymphony version 2.1
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ChemSymphony version 2.1

Cherwell Scientific Publishing are pleased to announce the release of
ChemSymphony version 2.1. This version presents several improvements and
modifications on version 2.

	Improved rendering and perspective
	Quicker rendering
	Improved animation
	The ability to render proteins as ribbons/strands etc.
	The use of filters to automatically recognise common file formats
	More fromats used including Gaussian and MOPAC Z-matrix.
	New graphic interaface for several applets

ChemSymphony may be viewed and assessed at  our web site at:
http://www.chemsymphony.com.

These pages include extensive examples, tutorials, ordering and new price
information.

Peter Tebbutt


	

-----------------------------------------------------------
Peter Tebbutt                 | e-mail:  peter@cherwell.com
Development Support           | Tel:     +44 (0)1865 784812
Cherwell Scientific Publishing| Fax:	+44(0)1865 784801
Oxford OX4 4GA, UK            | http://www.cherwell.com
-----------------------------------------------------------
Check Out ChemSymphony - rated top 1% Java applet by JARS
            http://www.cherwell.com/chemsymphony
-----------------------------------------------------------
                         


From mn1@helix.nih.gov  Fri Aug  1 19:14:55 1997
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Date: Fri, 1 Aug 1997 19:10:58 -0400 (EDT)
From: "M. Nicklaus" <mn1@helix.nih.gov>
Message-Id: <199708012310.TAA12951@helix.nih.gov>
To: CHEMISTRY@www.ccl.net
Subject: Re: Alpha + Linux ?
Cc: mn1@helix.nih.gov, choic@gusun.acc.georgetown.edu




On Fri, 1 Aug 1997, Cheol Choi  <choic@gusun.acc.georgetown.edu> wrote:

> According to the SPEC benchmark, Dec Alpha seems to be the
> fastest processor currently.
> And I know some companies are selling Alpha workstations with Linux OS at
> very reasonable price.
> Is there anyone who has good experience with Alpha + Linux combination?

We've had some experience with Alpha + Linux recently, and are going to 
have more very soon.  Has it been good?  Yes and no.

The Alpha chip is indeed a very fast processor.  The new motherboards 
with the DEC Pyxis chip set promise to be even faster, 600 MHz systems
are selling (albeit still quite expensive), and processors with clock
rates of 800 MHz and higher are in the pipeline.

What's the drawback then?  Mostly the software.  The Linux for the Alpha
(axp-linux) is much less mature and stable than Linux for the x86 type
processors.  A big problem are the compilers.  f2c is plain buggy, and
gcc and the linker also have their problems.  If you want to know more
(probably more than you want to know...) about these technical axp-linux
issues, you can follow the discussion on the mailing list axp-list@redhat.com
(to subscribe: send e-mail to axp-list-request@redhat.com with 'subscribe'
as the subject), or check the newsgroup comp.os.linux.alpha.

The software we tested on axp-linux was:
CHARMM       runs
GAMESS       runs
AMSOL        runs
Gaussian 94  doesn't compile (see also previous postings on the CCL)

When I last checked some of the Web sites on scientific applications for Linux, 
such as http://SAL.kachinatech.com/Z/2 or http://chpc06.ch.unito.it/chem_linux.html,
I counted more than 70 Chemistry/Biology related programs.  We sure haven't
tested them all, but I'd guess if you get the source code for them, you could
give it a shot at compiling them on an Alpha Linux system.  If you have access
to a Digital Unix system, you can actually compile your program on the DEC
system and then run it on the Alpha Linux machine -- the executables are binary
compatible (if you use static linking for the libraries).  This doesn't always
work (didn't work for G94), but we've used this method repeatedly for other
programs.

The benchmarks we ran showed very nice results indeed.  The speedup we saw
for various application relative to a Pentium PRO 200 MHz system running under
Linux was between 1.5 and 2.2.  From the clock rates, you would expect 2.5
(we used a 500 MHz Alpha chip).  The advanced chip architecture itself might
allow even higher numbers.  The reason we havent't seen those numbers (yet)
are most likely compiler issues.  I can only recommend that you test various 
compiler options (optimization etc.) if not different compiler to see which
gives you the fastest code.

The bottom line, from my point of view, is:  It's a great platform, but 
still in its early stages.  So, if you like to patch operating system source
code, rebuild the kernel, tweak the compilers, and do other system 'hacking'
regularly, go for it (...it's not really that bad, but you get my drift).
We *are* using such a system to do real comp.chem. work.  However, if you
want a system that is totally out-of-the-box, runs every known application
without a problem, has plenty of stable compilers, etc., then you'd probably
want to wait a little bit longer.

Marc

------------------------------------------------------------------------
 Marc C. Nicklaus                        National Institutes of Health
 E-mail: mn1@helix.nih.gov               Bldg 37, Rm 5B29
 Phone:  (301) 402-3111                  BETHESDA, MD 20892-4255    USA
 Fax:    (301) 496-5839    http://www.nci.nih.gov/intra/lmch/MCNBIO.HTM
    Laboratory of Medicinal Chemistry, National Cancer Institute,  &
  Lab. of Structural Biology, Div. of Computer Research and Technology
------------------------------------------------------------------------



From mbskowro@cyf-kr.edu.pl  Tue Aug  5 05:15:40 1997
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From: Marek Skowronek <mbskowro@cyf-kr.edu.pl>
Message-Id: <199708050848.KAA07024@kinga.cyf-kr.edu.pl>
Subject: Oxford&Cambridge database
To: chemistry@www.ccl.net
Date: Tue, 5 Aug 1997 10:48:51 +0200 (METDST)
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Dear Netters,

I am looking for an information about the Cambridge Crystallographic Data
Centre, Oxford database or related crystallographic databases. 
I should be very grateful for some information.

                                             Thank you in advance
                                             Marek Skowronek

From hillisch@imb-jena.de  Tue Aug  5 07:15:42 1997
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From: "Alexander Hillisch" <hillisch@imb-jena.de>
Message-Id: <9708051258.ZM16248@guiness.imb-jena.de>
Date: Tue, 5 Aug 1997 12:58:01 -0600
In-Reply-To: Marek Skowronek <mbskowro@cyf-kr.edu.pl>
        "CCL:Oxford&Cambridge database" (Aug  5, 10:48am)
References: <199708050848.KAA07024@kinga.cyf-kr.edu.pl>
X-Mailer: Z-Mail (3.2.3 08feb96 MediaMail)
To: Marek Skowronek <mbskowro@cyf-kr.edu.pl>
Subject: Re: CCL:Oxford&Cambridge database
Cc: CHEMISTRY@www.ccl.net
Mime-Version: 1.0
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Hi Marek!

Have a look at:

http://www.ccdc.cam.ac.uk/

for the Cambridge Structural Database System!

Best regrads,

Alex

-- 
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
_/ Alexander Hillisch                                               _/      
_/ Institute of Molecular Biotechnology                             _/
_/ Department of Molecular Biology                                  _/     
_/ Beutenbergstrasse 11                Phone: +49-3641-65-6203      _/
_/ D-07745 Jena                        Fax:   +49-3641-65-6210      _/ 
_/ GERMANY                             Email: hillisch@imb-jena.de  _/
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
_/ "And all this science I don't understand it's just my job five   _/
_/  days a week..."                                                 _/
_/                                    Elton John - Rocket man       _/
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

From msj@fskru5.hre.hydro.com  Tue Aug  5 08:15:41 1997
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From: "Merethe Sjovoll" <msj@fskru5.hre.hydro.com>
Message-Id: <9708051505.ZM21793@fskru5.hre.hydro.com>
Date: Tue, 5 Aug 1997 15:05:21 -0600
Reply-To: Merethe.Sjovoll@hre.hydro.com
X-Mailer: Z-Mail (3.2.3 08feb96 MediaMail)
To: chemistry@www.ccl.net
Subject: crystal structures of CuCl and CuCl2
Mime-Version: 1.0
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Hello everyone,

could somebody who has access to a structural database (f.ex. ICSD) find a free
moment to look up the crystal structures of CuCl, CuCl2 and Cu2ClO ?

best regards

Merethe

-- 

********************************************************
Merethe Sjovoll, Ph.D.                      *          *
Research Scientist                          *          *
Norsk Hydro a.s Research Center             *          * 
                                            *          *
P.O.Box 2560                                *  HYDRO   *
N-3901 Porsgrunn,                           * RESEARCH *  
Norway                                      *          *
                                            *   (((    *
email: Merethe.Sjovoll@hre.hydro.com        * (=====)  *
Phone:+47 35 56 48 97                       *          *
Fax  :+47 35 56 36 86                       *          *    
********************************************************

From gmercier@mail.med.upenn.edu  Tue Aug  5 09:15:40 1997
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From: "Gustavo A. Mercier Jr" <gmercier@mail.med.upenn.edu>
Message-Id: <199708051221.IAA00028@mail.med.upenn.edu>
Subject: Rasmol & Geometry Queries
To: chemistry@www.ccl.net
Date: Tue, 5 Aug 1997 08:21:00 -0400 (EDT)
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Hi!

I wonder if Rasmol has the functionality to query bond lengths,
angles, and dihedral angles. I have looked in the doc with no
success. You can select atoms within a given radius, but can you
select ij and request rij, etc. ? This functionality is not there.

Along the line of viewers, does Moil View run in a Linux (PPro) box
with opengl?

Thanks!


-- 
                                      ("`-/")_.-'"``-._
Gustavo A. Mercier,Jr.,MD,PhD         (. . `) -._    )-;-,_() 
Division of Nuclear Medicine          (v_,)'  _  )`-.\  ``-
Dept. of Radiology                    _;- _,-_/ / ((,'
University of Pennsylvania           ((,.-'  ((,/
3400 Spruce St.                  gmercier@mail.med.upenn.edu
Philadelphia, PA 19104         215-662-3069/3091 fax: 215-349-5843



From mauro@carbon.foodsci.unibo.it  Tue Aug  5 10:15:42 1997
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Date: Tue, 5 Aug 1997 15:55:13 +0200 (MET DST)
From: "Mauro A. Cremonini" <mauro@carbon.foodsci.unibo.it>
To: chemistry@www.ccl.net
Subject: Re: CCL:Rasmol & Geometry Queries
In-Reply-To: <199708051221.IAA00028@mail.med.upenn.edu>
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On Tue, 5 Aug 1997, Gustavo A. Mercier Jr wrote:

> Hi!
> 
> I wonder if Rasmol has the functionality to query bond lengths,
> angles, and dihedral angles. I have looked in the doc with no
> success. You can select atoms within a given radius, but can you
> select ij and request rij, etc. ? This functionality is not there.
> 
> Along the line of viewers, does Moil View run in a Linux (PPro) box
> with opengl?
> 
> Thanks!
> 
> 

Somebody told me that there is an hidden function somewhere in the
program, but unfortunately I don't remember where...
I use the program XmMol which I found useful. It is free and runs under
linux,  but you have to
ask permission to download it to:

tuffery@urbb.jussieu.fr

hope it helps,
Mauro


============================================
Mauro Andrea Cremonini, PhD
Food Science and Technology Laboratory
University of Bologna
Via Ravennate 1020 - Cesena - Italy
FAX:+39.547.382348
e-mail: mauro@carbon.foodsci.unibo.it
73 de IK4QIX
============================================


From govindan@chet.medc.umn.edu  Tue Aug  5 11:15:44 1997
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From: Govindan Subramanian <govindan@chet.medc.umn.edu>
Message-Id: <199708051513.KAA20429@chet.medc.umn.edu>
Subject: force constants for furan, thiophene and pyrole
To: CHEMISTRY@www.ccl.net
Date: Tue, 5 Aug 1997 10:13:55 -0500 (CDT)
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Hai CCL'ers
	Could anyone help me in finding the experimentally assigned force constants
for the five-membered heterocycles, Furan, Thiophene and Pyrole.  Any references to
comparison with theoretical calculations are most welcome.
	By the way, is there any freeware that interprets/assigns the characteristic
normal-mode (as to whether it is a C-C or a C-H stretching or C-C-X bending, wagging
etc.) from gaussian outputs.
	I will summarise the responses if there is sufficient interest.  Thanks.
-subramanian.g

From matthieu.buchs@unifr.ch  Tue Aug  5 11:23:00 1997
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Date: Tue, 05 Aug 1997 18:01:38 +0200
From: Matthieu Buchs <matthieu.buchs@unifr.ch>
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Marek Skowronek wrote:
> 
> Dear Netters,
> 
> I should be very grateful if send me some information (www page or
> something like that) about CAMBRIDGE CRYSTALOGRAPHIC DATA CENTRE , OXFORD
> DATABASE, or related databases.
> 
>                                             Thank you in advance
>                                             Marek Skowronek
> 
> ---
> Administrivia: This message is automatically appended by the mail exploder:
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>              Web: http://www.ccl.net/chemistry.html
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Hi Marek,

You can also have a look to the following place

>http://www.oxmol.com/

for the Oxford Molecular Group

Best regards,

Matthieu

------------------------------
Matthieu Buchs
Department of Inorganic Chemistry
University of Fribourg (Switzerland)
Perolles

Tel: ++41 26 300 87 49
Fax: ++41 26 300 97 38

mailto:Matthieu.Buchs@unifr.ch

From cramer@pollux.chem.umn.edu  Tue Aug  5 11:27:35 1997
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From: cramer@pollux.chem.umn.edu (Christopher Cramer)
Message-Id: <199708051504.KAA23374@pollux.chem.umn.edu>
Subject: Re: CCL:Reliability of the solvation models in GAUSSIAN
To: shokhen@post.tau.ac.il (shochen michael)
Date: Tue, 5 Aug 1997 10:04:51 -0500 (CDT)
Cc: CHEMISTRY@www.ccl.net
In-Reply-To: <Pine.SGI.3.96-heb-2.07.970804130647.5780A-100000@etgar.tau.ac.il> from "shochen michael" at Aug 4, 97 02:28:24 pm
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Michael,

Re: CCL post on reliability of IPCM models in G94 for trianion/dianion
    solvation free energies

I would expect IPCM to do very poorly indeed for a trianion. The philosophy
of IPCM is to define a continuum cavity boundary using an isodensity
surface, and the developers have done some work illustrating this
prescription to give "reasonable" cavities (there's no unique way to decide
what the cavity SHOULD be) for neutrals. In the case of polyanions,
however, one might have to go quite far from the molecule to reach the
required isodensity threshhold, in which case the cavity volume will be
too large and the solvation energy too small. You might be getting lucky,
however, since you aren't using diffuse functions, so the density can't
spread out too far.

A separate problem is the so-called charge penetration phenomenon. The PCM
approach, unlike generalized Born or multipole expansion, only accounts for
the charge density inside the continuum boundary. This leads to the
remarkably unphysical problem (if not corrected for -- as far as I know G94
applies no correction) that the solvation free energy of an anion begins to
DECREASE with decreasing cavity volume at some point because the charge
enclosed by the boundary is decreasing (the Born formula says solvation
free energy is proportional to the square of the charge and inversely
proportional to the cavity radius for a sphere, recall). So, in a trianion,
more density will be outside the cavity than for your dianion (say,
perhaps, leading to actual solvated charges of -2.8 and -1.86 or so)
and given the large electrostatic solvation free energies associated with
multiply charged systems, errors on the order of 1 eV would not be at all
surprising.

Tomasi has spent a lot of effort addressing the charge penetration problem
in the Pisa group's various implementations of PCM (which use fixed cavity
boundaries, incidentally, typically employing a union of spheres having
radii of atomic van der Waals radius times 1.2), and Klamt has recently
mixed ideas from multipole expansion into his COSMO modification of PCM in
order to deal with this too.

As for your question of benchmarking of the IPCM model against experiment,
such an effort would be difficult to carry out. The IPCM model accounts
only for the electrostatic component of solvation, but for neutral
molecules, non-electrostatic solvation components may be considerably
larger or of the same magnitude as the electrostatics, so errors would be
difficult to assign (the electrostatic component is not a physical
observable). For ions, on the other hand, the electrostatic component
should dominate, but now the experiment is rather hard to do, and there are
few data against which to compare (perhaps twenty-five or so solid aqueous
free energies of solvation and another fifteen with non-trivial error
bars--substantially fewer data in any individual organic solvent).

Chris
> 
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> 


-- 

Christopher J. Cramer
University of Minnesota
Department of Chemistry
207 Pleasant St. SE
Minneapolis, MN 55455-0431
--------------------------
Phone:  (612) 624-0859 || FAX:  (612) 626-2006
cramer@pollux.chem.umn.edu
http://pollux.chem.umn.edu/~cramer


From hoffmann@cartan.gmd.de  Tue Aug  5 12:15:45 1997
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From: Daniel Hoffmann <Daniel.Hoffmann@gmd.de>
Message-Id: <199708051528.AA03768@boyer>
Subject: rasmol: distances, angles, dihedrals
To: chemistry@www.ccl.net
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On Tue, 5 Aug 1997, Gustavo A. Mercier Jr wrote:
 
> I wonder if Rasmol has the functionality to query bond lengths,
> angles, and dihedral angles. I have looked in the doc with no
> success. You can select atoms within a given radius, but can you
> select ij and request rij, etc. ? This functionality is not there.

Try rasmol commands "set picking distance", "set picking angle", and 
"set picking torsion" and then click at two, three, or four atoms, resp.

Daniel

-- 
Daniel Hoffmann, GMD-SCAI, Schloss Birlinghoven, D-53754 St.Augustin, Germany
            Fax +49 (0) 2241 14-2656  Phone +49 (0) 2241 14-2795
Email Daniel.Hoffmann@GMD.DE  WWW http://www.gmd.de/SCAI/people/hoffmann.html

From baker@terminator.chem.uiowa.edu  Tue Aug  5 12:18:27 1997
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Date: Tue, 5 Aug 1997 10:53:35 -0700 (PDT)
From: "Nathan A. Baker" <baker@terminator.chem.uiowa.edu>
To: CCL <chemistry@www.ccl.net>
Subject: G94 DFT SCF Convergence Problems...
Message-ID: <Pine.SGI.3.91.970805104120.18595A-100000@terminator.chem.uiowa.edu>
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Hi -- I'm using the BPW91 method with the 6-31G basis set to evaluate the 
single point energy of ~30 atoms surrounded by 10 point charges.  I've 
turned off the symmetry (the system was already C1 point group anyway) to 
avoid re-orientation of the molecule with respect to the point charges.

Without the point charges, the calculation takes 12 min of Power 
Challenge time.  Upon adding the point charges, I was unable to reach SCF 
convergence within the allotted 64 cycles.  I added the SCF=QC option, 
and received a "Spurious integrated density" error.  I added the 
recommended "Int=FineGrid" and "SCF=NoVarAcc".  This resulted in a eror 
indicating the necessary memory was unavailable.  I added the Link 0 
line, "%Mem=250MB" and once again had convergence problems (after a much 
longer wait).  Finally, I used:

#BPW91/6-31G SCF=(VShift,QC) Stable=Opt NOSYMM Charge

and after waiting 5 hours for what was once a 12 min. calculation, killed 
it.  I don't understand the problems that are occurring.  Basically, 
these charges just add a few more terms to the potential energy function, 
but don't add any more basis functions, right?

If anyone has any ideas on this problem, I'd be very appreciative.  I 
would like to continue to use the BPW91 method to keep things consistent 
with other calculations I've done.

Thanks!

-----------------------------------------------
Nathan Baker * baker@terminator.chem.uiowa.edu

HELP! MY TYPEWRITER IS BROKEN!
	-- E. E. CUMMINGS
-----------------------------------------------


From bruno@antas.agraria.uniss.it  Tue Aug  5 12:20:46 1997
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Date: Tue, 5 Aug 1997 17:46:00 +0100 (NFT)
From: "Dr. Bruno Manunza" <bruno@antas.agraria.uniss.it>
To: "Gustavo A. Mercier Jr" <gmercier@mail.med.upenn.edu>
Cc: chemistry@www.ccl.net
Subject: Re: CCL:Rasmol & Geometry Queries
In-Reply-To: <199708051221.IAA00028@mail.med.upenn.edu>
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On Tue, 5 Aug 1997, Gustavo A. Mercier Jr wrote:

> Hi!
> 
> I wonder if Rasmol has the functionality to query bond lengths,
> angles, and dihedral angles. I have looked in the doc with no
> success. You can select atoms within a given radius, but can you
> select ij and request rij, etc. ? This functionality is not there.
> 
> Along the line of viewers, does Moil View run in a Linux (PPro) box
> with opengl?
> 
> Thanks!
> 

Dear Gustavo, you may try the Berkeley version of RasMol, it just do what 
you are looking for.

Berkeley-enhanced RasMol-2.6-ucb-beta for Windows/Mac/unix can load up
      to 5 molecules at once and move them independently! Provided by the RasMol
      enhancement project at the MultiCHEM Facility at the University of 
California, Berkeley. Caution: UCB-RasMol does not run most RasMol scripts (at
      least on Windows, due to a bug) and may not yet support stereo. Get
      'plain' RasMol above for scripts or stereo. 

to get it go to http://mc2.cchem.berkeley.edu/Rasmol/v2.6/

I have no idea about Moil View and linux with opengl but if I remember 
well Moil View do not work with opengl but it rather need GL with 
suitable graphic hardware.

Hope it helps
regards

Bruno


Dr Bruno Manunza
DISAABA (Dept. of Agricultural Environm. Sci)
University of Sassari
V.le Italia 39
07100 Sassari, ITALY
phone: 39 79 229215
fax:   39 79 229276
e-mail: bruno@antas.agraria.uniss.it
e-mail: bruno@tharros.dipchim.uniss.it
e-mail: gx6bot81@cray.cineca.it
web: http://antas.agraria.uniss.it


From stephen_andruski@fmc.com  Tue Aug  5 13:15:45 1997
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From: stephen_andruski@fmc.com (STEPHEN ANDRUSKI)
Subject: Re:RASMol and Geometry Queries
To: chemistry@www.ccl.net
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     There is an enhanced version of RASMol from a group at the Univ. of 
     California, Berkeley.  The URL that I have is:
     
     http://hydrogen.cchem.berkeley.edu:8080/Rasmol/
     
     although the last time I tried to access the site all I got was an 
     error message.
     
     This UCB enhanced version of RASMol allows you to do geometry queries 
     and also lets you load up to five molecules at one time and move them 
     independently.
     
     Good luck.
     
     Dr. Stephen W. Andruski
     FMC Corporation
     stephen_andruski@fmc.com

From intsim.com!haun@news.cts.com  Tue Aug  5 14:15:44 1997
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Date: Tue, 05 Aug 1997 09:23:01 -0700
To: "Mauro A. Cremonini" <mauro@carbon.foodsci.unibo.it>
From: Dan Haun <haun@intsim.com>
Subject: Re: CCL:Rasmol & Geometry Queries
Cc: chemistry@www.ccl.net


Hi all,

You can also use SCULPT which allows you to click onto an atom and gives you
the distances between 2 atoms, the angle between 3 atoms and  measures
dihedrals between 4 atoms.  It si not free but there are free trial copies,
as well as reasonable prices forthe academics.

Check it out http:// www.instim.com.



At 03:55 PM 8/5/97 +0200, Mauro A. Cremonini wrote:
>On Tue, 5 Aug 1997, Gustavo A. Mercier Jr wrote:
>
>> Hi!
>> 
>> I wonder if Rasmol has the functionality to query bond lengths,
>> angles, and dihedral angles. I have looked in the doc with no
>> success. You can select atoms within a given radius, but can you
>> select ij and request rij, etc. ? This functionality is not there.
>> 
>> Along the line of viewers, does Moil View run in a Linux (PPro) box
>> with opengl?
>> 
>> Thanks!
>> 
>> 
>
>Somebody told me that there is an hidden function somewhere in the
>program, but unfortunately I don't remember where...
>I use the program XmMol which I found useful. It is free and runs under
>linux,  but you have to
>ask permission to download it to:
>
>tuffery@urbb.jussieu.fr
>
>hope it helps,
>Mauro
>
>
>============================================
>Mauro Andrea Cremonini, PhD
>Food Science and Technology Laboratory
>University of Bologna
>Via Ravennate 1020 - Cesena - Italy
>FAX:+39.547.382348
>e-mail: mauro@carbon.foodsci.unibo.it
>73 de IK4QIX
>============================================
>
>
>-------This is added Automatically by the Software--------
>-- Original Sender Envelope Address: mauro@carbon.foodsci.unibo.it
>-- Original Sender From: Address: mauro@carbon.foodsci.unibo.it
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>Anon. ftp: www.ccl.net   | CHEMISTRY-SEARCH@www.ccl.net -- archive search
>             Web: http://www.ccl.net/chemistry.html 
>
>
Daniel P. Haun                              Tel:       (619) 658-9462
Interactive Simulations Inc.             Toll Free: (888) 272-8578 
5330 Carroll Canyon Rd.               Email:     haun@intsim.com      
San Diego, CA 92121                    Fax:       (619) 658-9463     
Web site http://www.intsim.com             


From baker@terminator.chem.uiowa.edu  Tue Aug  5 14:18:32 1997
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Date: Tue, 5 Aug 1997 12:40:45 -0700 (PDT)
From: "Nathan A. Baker" <baker@terminator.chem.uiowa.edu>
To: CCL <chemistry@www.ccl.net>
Subject: CCL:G:G94 DFT SCF Convergence Problems... (fwd)
Message-ID: <Pine.SGI.3.91.970805123753.19274B-100000@terminator.chem.uiowa.edu>
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Sorry to post again so soon, but I should have included in my original 
post that HF calculations with the point charges (~10) work fine, but DFT 
methods take much longer with convergence problems.  Thanks again!

-----------------------------------------------
Nathan Baker * baker@terminator.chem.uiowa.edu

HELP! MY TYPEWRITER IS BROKEN!
	-- E. E. CUMMINGS
-----------------------------------------------

---------- Forwarded message ----------
Date: Tue, 5 Aug 1997 10:53:35 -0700 (PDT)
From: Nathan A. Baker <baker@terminator.chem.uiowa.edu>
To: CCL <chemistry@www.ccl.net>
Subject: CCL:G:G94 DFT SCF Convergence Problems...


Hi -- I'm using the BPW91 method with the 6-31G basis set to evaluate the 
single point energy of ~30 atoms surrounded by 10 point charges.  I've 
turned off the symmetry (the system was already C1 point group anyway) to 
avoid re-orientation of the molecule with respect to the point charges.

Without the point charges, the calculation takes 12 min of Power 
Challenge time.  Upon adding the point charges, I was unable to reach SCF 
convergence within the allotted 64 cycles.  I added the SCF=QC option, 
and received a "Spurious integrated density" error.  I added the 
recommended "Int=FineGrid" and "SCF=NoVarAcc".  This resulted in a eror 
indicating the necessary memory was unavailable.  I added the Link 0 
line, "%Mem=250MB" and once again had convergence problems (after a much 
longer wait).  Finally, I used:

#BPW91/6-31G SCF=(VShift,QC) Stable=Opt NOSYMM Charge

and after waiting 5 hours for what was once a 12 min. calculation, killed 
it.  I don't understand the problems that are occurring.  Basically, 
these charges just add a few more terms to the potential energy function, 
but don't add any more basis functions, right?

If anyone has any ideas on this problem, I'd be very appreciative.  I 
would like to continue to use the BPW91 method to keep things consistent 
with other calculations I've done.

Thanks!

-----------------------------------------------
Nathan Baker * baker@terminator.chem.uiowa.edu

HELP! MY TYPEWRITER IS BROKEN!
	-- E. E. CUMMINGS
-----------------------------------------------


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From mcgsw@nwu.edu  Tue Aug  5 19:15:45 1997
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Date: Tue, 5 Aug 1997 16:11:30 -0700 (CDT)
From: Scott Weston <mcgsw@nwu.edu>
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Subject: Re: CCL:RASMol and Geometry Queries
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The current URL for UCB Enhanced Rasmol appears to be:

http://mc2.cchem.berkeley.edu/Rasmol/



Hope this helps,


gsw




================================================================================
Scott Weston, R.Ph., Ph.D.	  		Phone:  (312) 503-0080
Postdoctoral Research Associate			FAX:	(312) 503-5349
Shoichet Laboratory				Email:	mcgsw@nwu.edu
Dept. of Molecular Pharmacology and			  
   Biological Chemistry				"My definition of leadership   
Northwestern University Medical School           is translating vision into
303 E. Chicago Avenue - S215			 reality"
Chicago, IL  60611-3008				 ---T. Grentz
================================================================================

On Tue, 5 Aug 1997, STEPHEN ANDRUSKI wrote:

>      There is an enhanced version of RASMol from a group at the Univ. of 
>      California, Berkeley.  The URL that I have is:
>      
>      http://hydrogen.cchem.berkeley.edu:8080/Rasmol/
>      
>      although the last time I tried to access the site all I got was an 
>      error message.
>      
>      This UCB enhanced version of RASMol allows you to do geometry queries 
>      and also lets you load up to five molecules at one time and move them 
>      independently.
>      
>      Good luck.
>      
>      Dr. Stephen W. Andruski
>      FMC Corporation
>      stephen_andruski@fmc.com
> 
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