From jkl@ccl.net  Fri Sep  8 03:44:13 1995
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From: "Adam Fedorowicz (AKOLL)" <AFED@CHEM.UNI.WROC.PL>
To: chemistry@ccl.net
Date:          Fri, 8 Sep 1995 09:32:50 GMT+1
Subject:       Dipole Moment in MOPAC
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    Dear Netters,
    
 I use MOPAC (PM3 or AM1 most frequently). Could you tell me, where i 
can find information about precision of dipole moment calculation.

                    Adam Fedorowicz
                    
 Institut of Chemistry Wroclaw, Poland
 
    email:   AFED@chem.uni.wroc.pl
    
    
    
    
    


From jkl@ccl.net  Fri Sep  8 04:14:12 1995
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To: chemistry@ccl.net
From: picard@ext.jussieu.fr (G.S. PICARD)
Subject: Re / pseudopotentials


Dear Netters, here is a summary of the responses to a question I have
posted some months ago about pseudopotentials. I thank very much all the
contributors.



Date: Mon, 3 Jul 1995 11:25:55 +0200
X-Sender: picard@idf.ext.jussieu.fr
To: chemistry@ccl.net
=46rom: picard@ext.jussieu.fr (G.S. PICARD)
Subject: CCL:pseudo-potentials
Sender: Computational Chemistry List <chemistry-request@ccl.net>
Precedence: bulk

Dear netters,
can anybody tell me where is it possible to find basic and synthetic
literature about pseudo-potentials? Are they available for rare earth
elements?

Gerard S. PICARD , Directeur de Recherche au C.N.R.S.,
LABORATOIRE D'ELECTROCHIMIE ET DE CHIMIE ANALYTIQUE,
Unit=3DE9 de Recherche associ=3DE9e au C.N.R.S. n=3DB0216,
Equipe : "REACTIVITE EN MILIEUX IONIQUES LIQUIDES"
11 rue Pierre et Marie Curie - 75231 Paris cedex 05 - FRANCE.
Tel : (33) 1.43.54.53.84.
=3D46ax : (33) 1.44.27.67.50.
WWW Home Page : http://alcyone.enscp.jussieu.fr/Pages/LECA/GP/ (serveur W3
experimental).
_______________________
=46rom: Rafael Rodriguez Pappalardo <rafapa@obelix.cica.es>
Subject: Re: CCL:pseudo-potentials
To: picard@ext.jussieu.fr (G.S. PICARD)
Date: Mon, 3 Jul 1995 12:38:54 +0200 (MET)
MIME-Version: 1.0

Dear Sir,
you can look for references from:

Barthelat, Jean Claude
Daudey, Jean Pierre
Durand, P.

>from the Universite de Toulouse, among other authors.

Yours sincerely

        Dr. Rafael R. Pappalardo
        Dept. of Physical Chemistry, Univ. of Seville
        Prof. Garcia Gonzalez, s/n street, 41013-Seville (SPAIN)
        e-mail: rafapa@obelix.cica.es
________________________
=46rom: "John West" <west@qtp.ufl.edu>
Date: Mon, 3 Jul 95 10:57:08 EDT
To: picard@ext.jussieu.fr
Subject: Re:  CCL:pseudo-potentials

I am also interested in the answers to your question concerning
pseudo-potentials.  Please summarize for the list.

John West
west@qtp.ufl.edu
_________________________
=46rom: David Heisterberg <djh@ccl.net>
Date: Mon, 3 Jul 1995 12:31:37 -0400
To: picard@ext.jussieu.fr
Subject: Re: CCL:pseudo-potentials

The first name that comes to mind regarding pseudopotentials for
lathanides is Michael Dolg, at, I think, Stuttgart.
--
David J. Heisterberg (djh@ccl.net)      Gee, it's so beautiful, I gotta
The Ohio Supercomputer Center           give somebody a sock in the jaw.
Columbus, Ohio                          -- Little Skippy (Percy Crosby)
______________________
=46rom: CUNDARIT@MSUVX1.MEMPHIS.EDU
Date: Wed, 05 Jul 1995 08:23:29 -0500 (CDT)
Subject: Re: CCL:pseudo-potentials
To: picard@ext.jussieu.fr
MIME-version: 1.0

Hi,

        Our group in collaboration with Walt Stevens developed effective cor=
e
potentials for the lanthanides.

        The reference is TR Cundari & WJ Stevens 1993, 98, 5555.

        Included in the references of this paper are pseudopotential
applications to the lanthanides by other groups.

Tom
+=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
Thomas R. Cundari                           Address from 3/15/95 -> ca. Augu=
st:
Asst. Professor of Chemistry                Prof. Tom Cundari
Computational Inorganic Chemistry Lab       Visiting Scientist
University of Memphis                       Cornell Theory Center
Memphis, TN 38152                           520 Engineering & Theory Center =
Bldg
phone: 901-678-2629                         Cornell University
fax:   901-678-3447                         Ithaca, New York 14853-3801
e-mail: cundarit@cc.memphis.edu             phone: (607)254-8686
                                            office: (607)254-8621
http://www.memst.edu/chemistry/umchem.html  fax: (607)254-8888
                                            e-mail: same as always
+=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

Dear Dr. Picard,

No truly up-to-date reviews on pseudopotentials exist at present,
although I know of several people who are writing (Drs. Stoll and
Dolg here in Stuttgart) or have submitted (Dr. Cundari in the USA and
Dr. Frenking in Marburg/Germany) such articles. A review on electronic
structure calculations by Dolg and Stoll will appear in the next
Handbook of Chemistry and Physics of the Rare Earth Elements.

There are ECPs for rare earth elements. The most ingenious, accurate,
and comprehensive ones are those due to Dr. Michael Dolg.
Some references to the energy-adjusted pseudopotentials of the
Stuttgart group are:
* Ref 1: P. Fuentealba, H. Preuss, H. Stoll, L. v. Szentpaly,
*        Chem. Phys. Lett. 89, 418 (1982).
* Ref 2: P. Fuentealba, L. v. Szentpaly, H. Preuss, H. Stoll,
*        J. Phys. B 18, 1287 (1985).
* Ref 3: G. Igel-Mann, H. Stoll, H. Preuss, Mol. Phys. 65, 1321 (1988).
* Ref 4: A. Bergner, M. Dolg, W. Kuechle, H. Stoll, H. Preuss,
*        Mol. Phys. 80, 1431 (1993).
* Ref 5: P. Fuentealba, H. Stoll, L. v. Szentpaly, P. Schwerdtfeger, H. Preu=
ss,
*        J. Phys. B 16, L323 (1983).
* Ref 6: M. Kaupp, P. v. R. Schleyer, H. Stoll, H. Preuss,
*        J. Chem. Phys. 94, 1360 (1991).
* Ref 7: M. Dolg, U. Wedig, H. Stoll, H. Preuss, J. Chem. Phys. 86, 866 (198=
7).
* Ref 8: U. Wedig, M. Dolg, H. Stoll, H. Preuss in Quantum Chemistry:
*        The Challenge of Transition Metals and Coordination Chemistry,
*        A. Veillard, Reidel, Dordrecht (1986), p.79.
* Ref 9: L. v. Szentpaly, P. Fuentealba, H. Preuss, H. Stoll,
*        Chem. Phys. Lett. 93, 555 (1982).
* Ref 10: D. Andrae, U. Haeussermann, M. Dolg, H. Stoll, H. Preuss,
*         Theor. Chim. Acta 77, 123 (1990).
* Ref 11: H. Stoll, P. Fuentealba, P. Schwerdtfeger, J. Flad, L. v. Szentpal=
y,
*         H. Preuss, J. Chem. Phys. 81, 2732 (1984).
* Ref 12: W. Kuechle, M. Dolg, H. Stoll, H. Preuss, Mol. Phys. 74, 1245 (199=
1).
* Ref 13: M. Dolg, M. Fischer, H. Preuss, A. Alex, T. Clark, to be published=
 .
* Ref 14: M. Dolg, H. Stoll, H. Preuss, Theor. Chim. Acta 85, 441 (1993).
* Ref 15: M. Dolg, H. Stoll, H. Preuss, J. Chem. Phys. 90, 1730 (1989).
* Ref 16: M. Dolg, P. Fulde, W. Kuechle, C.-S. Neumann, H. Stoll,
*         J. Chem. Phys. 94, 3011 (1991).
* Ref 17: M. Dolg, H. Stoll, A. Savin, H. Preuss, Theor. Chim. Acta 75,
*         173 (1989).
* Ref 18: M. Dolg, H. Stoll, H.-J. Flad, H. Preuss, J. Chem. Phys. 97, 1162
*         (1992).
* Ref 19: M. Dolg, H. Stoll, H. Preuss, R.M. Pitzer, J. Phys. Chem. 97, 5852
*         (1993).
* Ref 20: P. Schwerdtfeger, M. Dolg, W.H.E. Schwarz, G.A. Bowmaker, P.D.W.
Boyd,
*         J. Chem. Phys. 91, 1762 (1989).
* Ref 21: U. Haeussermann, M. Dolg, H. Stoll, H. Preuss, Mol. Phys. 78,
1211 (1993).
* Ref 22: W. Kuechle, M. Dolg, H. Stoll, H. Preuss, J. Chem. Phys. 100,
7535 (1994).

I think refs. 14 through 19 deal with lanthanide ECPs, ref. 22 with actinide=
s.

Best regards, Martin Kaupp


------------------------------------------------------------------
| Dr. Martin Kaupp                                               |
| Max-Planck-Institut fuer Festkoerperforschung,                 |
| Heisenbergstrasse 1, D-70569 Stuttgart, Germany,               |
| Tel.: country-code+711/689-1532                                |
| Fax.: country-code+711/689-1562                                |
| email: kaupp@vsibm1.mpi-stuttgart.mpg.de                       |
|                                                                |
| and Institut fuer Theoretische Chemie, Universitaet Stuttgart, |
| Pfaffenwaldring 55, D-70569 Stuttgart, Germany                 |
| Tel.: country-code+711/685-4399                                |
| Fax.: country-code+711/685-4442                                |
------------------------------------------------------------------

Gerard S. PICARD , Directeur de Recherche au C.N.R.S.,
LABORATOIRE D'ELECTROCHIMIE ET DE CHIMIE ANALYTIQUE,
Unit=E9 de Recherche associ=E9e au C.N.R.S. n=B0216,
Equipe : "REACTIVITE EN MILIEUX IONIQUES LIQUIDES"
11 rue Pierre et Marie Curie - 75231 Paris cedex 05 - FRANCE.
Tel : (33) 1.43.54.53.84.
=46ax : (33) 1.44.27.67.50.
WWW Home Page : http://alcyone.enscp.jussieu.fr/Pages/LECA/GP/ (serveur W3
experimental).=20



From jkl@ccl.net  Fri Sep  8 04:44:12 1995
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To: chemistry@ccl.net
Subject: Molecular Similarity 
Date: Fri, 08 Sep 95 10:40:36 +0100
X-Mts: smtp



Dear Netters,

I will like to know if there are any public-domain (available by FTP) programs 
to do molecular similarity studies on ACD (Available Chemical Directory) 
databases from ISIS running on SGI platforms. I will also like to receive any 
information on Molecular Similarity studies and related software.

Thanks for your help

Dr Pablo Ballester.

(using G. A. Suner's account. Please use: guillem@gauss.uib.es )

------------------------------------------------------------------------ 
Dr Guillermo A. Suner; Dep. de Quimica, UNIVERSITAT DE LES ILLES BALEARS
E-07071-Palma de Mallorca, SPAIN.
E-mail: guillem@gauss.uib.es    Tel: + 34 71 173498  Fax: + 34 71 173426 
WWW URL: http://www.uib.es/depart/dqu/dquo/suner.html

From savary@sc2a.unige.ch  Fri Sep  8 07:44:15 1995
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To: CHEMISTRY@www.ccl.net
From: savary@sc2a.unige.ch (Francois Savary)
Subject: k-points and Brillouin zone


Hello,

I posted a few weeks ago a question concerning k-points sets for the
brillouin zone. Thank You for your replies. Here follows the references that
might interest some you.

Articles :

Traylor et al., Phys. Rev. B 1971, 3, 3457.
Chadi and Cohen, Phys. Rev. B 1973, 8, 5747.
Monkhorst and Pack, Phys. Rev. B 1976, 13, 5188.
Chadi, Phys. Rev. B, 16, 1746. 
Pack and Monkhorst, ibid. 1748.
Ramirez and Boehm, Int. J. Quant. Chem. 1986, 30, 391. (the best in town)
Rajagopal et al, Phys. Rev. Lett. 1994, 73, 1959.

Books :

Bradley and Cracknell,`The Mathematical Theory of Symmetry in Solids',
Clarendon Press, Oxford 1972. (the best in town)

Lax, `Symmetry Principles in Solid State and Molecular Physics', John Wiley
& sons, NY 1974.

Francois Savary





-----------------------------------------------------------------
Savary Francois, Ph. D
Department of inorganic and applied chemistry
Univeristy of Geneva
30, quai Ernest Ansermet, CH-1211 Geneva 4
voice +4122 702 65 32 fax +4122 702 65 18
E-Mail savary@sc2a.unige.ch

Institute for Inorganic and Physical Chemistry,
University of Berne, Freiestr. 3, CH-3012 Bern,
voice +4131 631 42 37, fax +4131 631 39 94
E-Mail savary@solar.iac.unibe.ch

WWW : http://scsg9.unige.ch/eng/toc.html (in English)
      http://scsg9.unige.ch/tabmat.html  (in French)
      http://scsg9.unige.ch/eng/pubdef.html (public defense of Ph.D)
      http://scsg9.unige.ch/eng/cv.html  (resume) 
-----------------------------------------------------------------



From heelisp@delta.newi.ac.uk  Fri Sep  8 08:59:16 1995
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Date: Fri, 8 Sep 1995 13:52:54 +0100
Message-Id: <95090813525402@delta.newi.ac.uk>
To: chemistry@www.ccl.net
Subject: Powermac summary 
X-VMS-To: SMTP%"chemistry@www.ccl.net"  


Dear All,
some weeks ago I asked for information on Powermac   versions of Mopac.

I received the following replies, thanks to all who sent information.


Paul Heelis

1.   GAMESS, ab initio programm
http://www.msg.ameslab.gov/GAMESS/GAMESS.html 
or http://hackberry.chem.niu.edu/ChemistrySoftware.html
contact  Brett Bode.

2.  A modelling package called CAChe  which includes an implementation of MOPAC
6.0, 
contact CAChe Scientific - Oxford Molecular.

The U.S. Office is in Beaverton Oregon, try zinnen@cache.com

3. Chem-x is now ported to powermac and the chemQM module has mopac 6. Chemical
design at  
UK fax 01608 642244 or USA 1 201 529 2443







From jkl@ccl.net  Fri Sep  8 10:14:18 1995
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From: Jolanta Latosinska <JOLANALA%PLPUAM11.BITNET@phem3.acs.ohio-state.edu>
Subject: electric field gradient (Gaussian94)
To: CCL <chemistry@ccl.net>
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Dear Neters,
     does anyone know what is the definition of electric field gradient in
 x,y,z coordinates and tensor representation (i.e. 3xx-rr, 3yy-rr, 3zz-rr)?
 The values of the components are completely diffrent (about 1000x).
 I am not sure which values I should use to calculate nuclear quadrupole
 coupling constant.
 Thank you for help,

 Jolanta Latosinska

 -----------------------------------------------------------------------
 Jolanta Latosinska
 Institute of Physics, Adam Mickiewicz University, Poznan, Poland
 e-mail: jolanala@plpuam11.amu.edu.pl or jolanala@phys.amu.edu.pl
 -----------------------------------------------------------------------

From jkl@ccl.net  Fri Sep  8 10:59:17 1995
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From: Ramon Pouplana <ramon@far.ub.es>
Subject: dipole_moments_experimentally
To: chemistry@ccl.net
Date: Fri, 8 Sep 95 16:45:11 METDST
Mailer: Elm [revision: 66.25]



Dear netters
 I would like to ask if you know anyone could measure me 
 experimentally the dipole moments in gas fase of aromatic compounds.
 
Thanks!

 Ramon Pouplana 
Unitat de Fisico-Quimica
Facultat de Farmacia
Universitat de Barcelona
Barcelona Spain


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Date: Fri, 8 Sep 1995 17:39:45 +0100
To: chemistry@ccl.net
From: bouyer@ext.jussieu.fr (Frederic BOUYER)
Subject: Symmetry number


Hi everybody,

Is there anybody out there who can explain to me the exact definition (and
physical/chemical meanings) of the symmetry number, the one that occurs in
the rotational contributions of thermochemistry functions ?

Thank you in advance.

Frederic Bouyer
Lab. Electrochimie et de Chimie Analytique
http://alcyone.enscp.jussieu.fr/Pages/LECA/GP/FB/



From jkl@ccl.net  Fri Sep  8 13:44:18 1995
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From: "John-M. Sichel" <sichelj@Umoncton.CA>
Sender: "John-M. Sichel" <sichelj@Umoncton.CA>
Reply-To: "John-M. Sichel" <sichelj@Umoncton.CA>
Subject: Re: CCL:Symmetry number
To: Frederic BOUYER <bouyer@ext.jussieu.fr>
Cc: chemistry@ccl.net
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On Fri, 8 Sep 1995, Frederic BOUYER wrote:

> Is there anybody out there who can explain to me the exact definition (and
> physical/chemical meanings) of the symmetry number, the one that occurs in
> the rotational contributions of thermochemistry functions ?

The symmetry number is defined as the order of the rotational subgroup of
the molecular symmetry group. This equals the number of indistinguishable
orientations of the molecule which can be interconverted by rotation
alone.  
Exs. NH3: 3,  CH4: 12,  C2H4: 4,  C6H6: 12,  XeF4(square planar): 8

The thermodynamic significance (in NH3 for example) is that rotation leads
to sets of 3 identical "states" which are really only one state according
to the Pauli principle.  The partition function (sum-over-states) is
therefore smaller by a factor of 3, and the entropy is reduced by R ln 3. 

John Sichel, Universite de Moncton, Canada



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Date: Fri, 8 Sep 1995 20:49:52 +0100 (MET)
From: "Hr. Dr. S. Shapiro" <toukie@zui.unizh.ch>
Sender: toukie@zui.unizh.ch
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To: chemistry@www.ccl.net
Subject: Urgent ? re PCModel for Windows


Dear Colleagues;

     The following questions pertain to the molecular modelling programme
PCModel for Windows, manufactured by Serena Software of Bloomington, Indiana.
(I have PCModel for Windows version 5.13):

     (i) Does PCModel for Windows have a mode where you simply give it a com-
mand, including an input structure file name, and have it return an output
file; in other words, does it have a batch mode, or is it entirely driven by
clicking buttons with a mouse?

    (ii) Does PCModel have a scripting language or a command file structure?
For example, will PCModel for Windows allow you, in a command file, to

             a. specify the input file
             b. specify values for specific torsion angles
             c. calculate the energy of the modified structure?


     Please respond directly to me at your earliest convenience.  I thank all
responders in advance for their kind cooperation in the above matter.


Yours most respectfully,

(Dr.) S. Shapiro
Inst. f. orale Mikrobiol. u. allg. Immunol.
Zent. f. Zahn-, Mund- u. Kieferheilkd. der Univ. ZH
Plattenstr. 11
Postfach
CH-8028 Zuerich 7
Switzerland

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

