From chemistry-request@server.ccl.net Sun Jul  8 00:09:17 2001
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From: "Guanglei Cui" <cuigl@morita.chem.sunysb.edu>
To: <chemistry@ccl.net>
Subject: compile gaussian98 for Redhat 7.1 with pgf77
Date: Sun, 8 Jul 2001 00:09:05 -0400
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Dear CCLers,
    Perhaps this's the question that has been asked so many times. I first
tried to scan the CCL archive, but couldn't get an answer. I have PGI
compiler and BLAS library and blas-f2c.a as recommended by Gaussian's
website. But I still have errors while compiling. Most of the errors are
caused by ml0.F and util.F. Here's a shortened version:
--
ml0.o: In function `MAIN_':
ml0.o(.text+0x296): undefined reference to `gauabt_'
ml0.o(.text+0x330): undefined reference to `gauabt_'
ml0.o(.text+0x402): undefined reference to `gauabt_'
ml0.o(.text+0x4dc): undefined reference to `gauabt_'
ml0.o(.text+0x619): undefined reference to `gauabt_'
ml0.o(.text+0x63c): undefined reference to `fixinout_'
ml0.o(.text+0xe47): undefined reference to `ggeten_'
ml0.o(.text+0xea8): undefined reference to `getexen_'
ml0.o(.text+0x112c): undefined reference to `gsyst_'
util.so: undefined reference to `writwa_'
util.so: undefined reference to `closwa_'
util.so: undefined reference to `asynwa_'
util.so: undefined reference to `erfcx_'
util.so: undefined reference to `fixstdin_'
util.so: undefined reference to `gaufls_'
util.so: undefined reference to `fixenv_'
util.so: undefined reference to `ifalph_'
util.so: undefined reference to `ntrsiz_'
util.so: undefined reference to `guname_'
util.so: undefined reference to `openwa_'
util.so: undefined reference to `envfil_'
util.so: undefined reference to `gfree_'
util.so: undefined reference to `gauexec_'
--
I'll really appreciate if someone can point me what I'm missing.

Best regards,


Guanglei Cui


From chemistry-request@server.ccl.net Sat Jul  7 08:41:01 2001
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From: Tarek Mamoun El-Gogary <asmasomy@mum.mans.eun.eg>
To: "'CHEMISTRY@ccl.net'" <CHEMISTRY@ccl.net>
Subject: INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
Date: Sat, 7 Jul 2001 15:44:27 +0300 
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Hi Netters,
Could any one, kindly, refere me to any information about: INTERNATIONAL
JOURNAL OF QUANTUM CHEMISTRY, i.e., web site, editorial board, .....etc.
Thank you in advance
Tarek

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<BR><FONT SIZE=3D2 FACE=3D"Arial">Could any one, kindly, refere me to =
any information about: INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, =
i.e., web site, editorial board, .....etc.</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Arial">Thank you in advance</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Tarek</FONT>
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From chemistry-request@server.ccl.net Sat Jul  7 15:29:30 2001
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From: uccatvm <uccatvm@ucl.ac.uk>
Message-Id: <5429.200107071929@socrates-a.ucl.ac.uk>
Subject: Re: CCL:BSSE on Dimers
To: dasf@u.arizona.edu (Demetrio Antonio da Silva Filho)
Date: Sat, 7 Jul 2001 20:29:29 +0100 (BST)
Cc: CHEMISTRY@ccl.net
In-Reply-To: <5.1.0.14.0.20010706124722.024390a0@deimos.email.arizona.edu> from "Demetrio Antonio da Silva Filho" at Jul 06, 2001 12:52:21 PM
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Hi Demetrio,
  
> I am doing some MP2/6-311G(2d,2p) canculation on
> anthracene dimers (using Gaussian'98) and I want to
> know how I can eliminate the BSSE (basis set
> superposition error) using the counterpoise method
> for that system of two equal molecules.
> 
> I wonder if someone can point me to articles or
> a scheme in order to do that using Gaussian'98.

If you calculate a binding energy De as:
De = E{AB} -E{A} - E{B}
Using counterpoise, you calculate the monomer energies E{A} and E{B} 
also in the complete dimer basis set. In Gaussian, you do this by
setting the nuclear charge of the second dimer (B for E{A} and 
A for E{B}) to zero. This is done by the Massage keyword; see the
examples in the Gaussian manual (www.gaussian.com/00000452.htm).
(but don't believe what the manual says about counterpoise only
providing "a crude estimate" - see papers below).

Depending on how much your monomer geometries change upon complexation,
you may also have to take into account the monomer deformation energies
(the energy it takes to bring an anthracene molecule to the geometry it
has in the complex).

Some references:
-  F.B. van Duijneveldt, J.G.C.M. van Duijneveldt-van de Rijdt, and
   J.H. van Lenthe, Chem. Rev. 94, 1873, 1994 (on counterpoise theory)

-  S. Simon, M. Duran, J.J. Dannenberg, J. Chem. Phys. 105, 1996
   (on geometry optimizations on BSSE-corrected potential energy surfaces).

-  F.B. van Duijneveldt, "Basis Superposition Error"
   in "Molecular Interactions" S. Scheiner (ed.), Wiley (1997)

-  T. van Mourik, A.K. Wilson, K.A. Peterson, D.E. Woon, T.H. Dunning, Jr.,
   Adv. Quant. Chem. 31, 105, 1999 (showing BSSE effects on interaction
   energies, distances, and frequencies).

You may also want to search the ccl archives; there have been a few disussions
on counterpoise the last few years.

Hope that helps,

Tanja
-- 
  =====================================================================
     Tanja van Mourik                                                
     Royal Society University Research Fellow
     Chemistry Department 
     University College London    phone:    +44 (0)20-7679-4663      
     20 Gordon Street             e-mail:   work: T.vanMourik@ucl.ac.uk 
     London WC1H 0AJ, UK                    home: tanja@netcomuk.co.uk     

     http://www.chem.ucl.ac.uk/people/vanmourik/index.html
  =====================================================================


From chemistry-request@server.ccl.net Sun Jul  8 06:04:51 2001
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Date: Sun, 8 Jul 2001 17:57:47 +0800
From: bxiong <bxiong@mail.shcnc.ac.cn>
To: "chemistry@ccl.net" <chemistry@ccl.net>
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hello,all members:
I want to use the AMBER to simulation of the small molecule. but I do not have the FF parameters of this molecule.Can you suggest the parameters for me? If I pubish the paper ,I will thank you in the paper . the  molecule is in pdb file format.thanks very much!!!
(any suggestion will be helpful and if I get something, I will send to the pharmacy.man.ac.uk/amber ,which is the AMBER parameter database.





Best regards!
   
            bxiong@mail.shcnc.ac.cn

Xiong Bin  
Shanghai Institute of Materia Medica, C.A.S.
phone:021-64311833-222(office)

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From chemistry-request@server.ccl.net Fri Jul  6 23:52:22 2001
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Date: Sat, 7 Jul 2001 13:01:38 +0930
From: Brian Salter-Duke <b_duke@lacebark.ntu.edu.au>
To: "'CCL'" <chemistry@ccl.net>
Subject: Re: CCL:aromaticity w/o orbitals
Message-ID: <20010707130138.A17484@lacebark.ntu.edu.au>
Mail-Followup-To: 'CCL' <chemistry@ccl.net>
References: <157A51F55AAAD3119CD70008C7B1629DDAB043@lvlxch01.unitedcatalysts.com>
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In-Reply-To: <157A51F55AAAD3119CD70008C7B1629DDAB043@lvlxch01.unitedcatalysts.com>; from dshobe@sud-chemieinc.com on Fri, Jul 06, 2001 at 12:08:59PM -0400

On Fri, Jul 06, 2001 at 12:08:59PM -0400, Shobe, Dave wrote:
> Another question in the philosophical debate about orbitals.
> 
> The explanation of aromaticity and the 4n+2 rule that I was taught was very
> dependent on the idea of orbitals.  In fact, it was usually presented in
> terms of the Huckel orbitals derived from the molecular graph of the pi
> system.  My question is, is it possible to explain the Huckel 4n+2 rule
> without appealing to orbitals? How does one do it?

Why would you want to? First, the orbitals are actually determined by
the symmetry of the planar cyclic ring systems, not by the Huckel
apprimations. Second, a molecular orbital approximation to the correct 
wave function is not that bad. It is likely to be getting correct that 
the 4n+2 systems are closed shell and stable and the 4n systems are 
triplet ground states with little stability. To answer some questions
you do not need an exact wave function or even a post-Hartree-Fock
wavefunction.

Cheers, Brian.
> --David Shobe
> Süd-Chemie Inc.
> phone (502) 634-7409
> fax     (502) 634-7724
> email  dshobe@sud-chemieinc.com
> 
> Don't bother flaming me: I'm behind a firewall.
> 
> 
> 
> -= This is automatically added to each message by mailing script =-
> CHEMISTRY@ccl.net -- To Everybody  | CHEMISTRY-REQUEST@ccl.net -- To Admins
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> 
> 
> 
> 

-- 
Associate Professor Brian Salter-Duke (Brian Duke) b_duke@lacebark.ntu.edu.au  
Chemistry, School of BECS, SITE, NT University, Darwin, NT 0909, Australia.
Phone 08-89466702.     Fax 08-89466847.     http://www.smps.ntu.edu.au/


