From S.M.Todd@chem.hull.ac.uk  Sat May 17 01:42:53 1997
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Subject: information on crystal structure files....
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Hi all

I was wondering if anyone had any information on the formation and format 
of crystal structure files with specific reference to daresbury's xr 
format and the format of these files within Cerius2.

Any information about the numbering of the atoms within the files 
relative to the image portrayed would be greatly appreciated.

Cheers in advance

Steve Todd


	mail to : S.M.Todd@chem.hull.ac.uk
	web-site: http://www.hull.ac.uk/php/chpsmt/


From joubert@ext.jussieu.fr  Sat May 17 06:42:54 1997
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Date: Sat, 17 May 1997 11:45:37 +0200
To: chemistry@www.ccl.net
From: joubert@ext.jussieu.fr (Laurent Joubert)
Subject: Summary : overlap matrix with G94


Dear Netters,

Yesterday, I posted this message on the CCL :
" Does anybody know how to print the overlap matrix, core hamiltonian matrix
and bielectronic integrals files with Gaussian 94 ? "

I thank you very much all who replied.

Here are their answers :

----------------------------------------------------------------------------
Pr. Xavier Assfeld

Salut,

avec le mot clef IOP(3/33=6), G94 va imprimer les matrices
        - de recouvrement
        - d'energie cinetique
        - d'energie potentielle electrons-noyau
        - hamiltonien de coeur (somme des deux precedentes)

Malheureusement il n'y a pas d'option pour imprimer les matrices de
repulsion bi-electronique (tout du moins a ma connaissance), sans aller
traficoter dans le code directement. Il ne faut bien sur pas utiliser
le mot clef SCF=DIRECT ! (c'est trivial mais on peut toujours faire
une etourderie).

J'espere que ca repond a la question.

                                                ...Xav

PS : si vous apprenez comment imprimer les matrices coulombiennes et
d'echange sans modifier le code, faites m'en part. Merci.

Pr. Xavier Assfeld
Laboratoire de Chimie Theorique
Universite Henri Poincare, Nancy I
BP 239, 54506 Vandoeuvre-les-Nancy Cedex, France
T: (33) (0)3 83 91 21 49
F: (33) (0)3 83 91 25 30
M: assfeld@lctn.u-nancy.fr
W: http://www.lctn.u-nancy.fr
----------------------------------------------------------------------------
Dr.Nguyen Nam Anh

Bonjour Joubert,

Pour sortir les matrices, il faudrait utiliser (IOp3,33=1-3).
Consultez le Programmer's Reference, a la fin, pour details.

Bonne chance

--
Nguyen Nam Anh   Quebec, Canada
E-mail: anh@chm.ulaval.ca
WWW: http://promethium.chm.ulaval.ca/~anh/

----------------------------------------------------------------------------
Dr. Xavier Fradera i Llinas

Laurent,
Try adding these keywords:

       iop (3/33=1) noraff int=nodirect extralink=316

Good Luck.

     |-------------------------------------------|
     |                                           |
     |   Xavier Fradera i Llinas                 |
     |   Institut de Quimica Computacional       |
     |   Universitat de Girona                   |
     |                                           |
     |   E-mail:  xavier@stark.udg.es            |
     |      WWW:  http://stark.udg.es/~xavier/   |
     |                                           |
     |-------------------------------------------|
----------------------------------------------------------------------------
Dr. Ahmed Bouferguene

Hi Laurent,

        I think you should try the option IOP(3/33=1). This works with
g-92. It allows one to get all one-eectron matrices.

                                                                Ahmed.
----------------------------------------------------------------------------
Dr. Richard Hall

Laurent,

The following input deck will do what you require - you just need to modify
the basis set and geometry for your own needs.  Be prepared for *lots* of
output!


-CUT--------------------------------------------------------------------
#p hf/sto-3g scf=conventional iop(3/33=2) extralinks=l316

test

0  1
H
H 1 1.0

-CUT--------------------------------------------------------------------


hope this helps
Richard.
--
------------------------------------------------------------------------
   Richard Hall
   Computational Chemistry Support      email:  R.Hall@mcc.ac.uk
   Manchester Computing                   tel:  (0161) 275 7179
   University of Manchester
   Manchester, UK,  M13 9PL
------------------------------------------------------------------------
----------------------------------------------------------------------------
Mr.  Giovanni SCALMANI

Hi,

no problem for overlap and core hamiltonian: simply add iop(3/33=1)
to the route card.

More problems with the bielectronic integrals. When using direct-scf
you should add iop(5/33=8) to write out 2e-integrals but this is
level 8 (!) debug printing which means megabytes of output-file even
for small basis sets containing a lot of confusing (for me) informations!

I guess that there should be a more clear way to print out 2e-integrals
when using non-direct scf.

If someone tells you a clear way to have a look into 2e-integrals,
please tell me since I am interested too.

Best regards,
Giovanni

----------------------------------------------------------------------
     | SCALMANI Giovanni                 giovanni@sg2.csrsrc.mi.cnr.it
 ^^^ | Ph.D. Student
 o o | Dipartimento di Chimica Fisica ed Elettrochimica
  |  | Universita' degli Studi di Milano
 \_/ | via C.Golgi, 19                          Phone: ++39-2-26603254
     | 20133 Milano (Italy)                     Fax  : ++39-2-70638129
----------------------------------------------------------------------



From cory@chem.ucalgary.ca  Sat May 17 17:43:00 1997
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From: <cory@chem.ucalgary.ca>
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Date: Sat, 17 May 1997 15:31:55 -0600
Message-Id: <9705172131.AA16603@zinc.chem.ucalgary.ca>
To: chemistry@www.ccl.net
Subject: Gaussian 92 problem




I am trying to run a large molecule of symmetry T. I keep getting the error

 Error permuting atoms in Fill, LPerm:
   1   0   0   0   0   0   0   0   0   0
   0   0   0   0   0   0   0   0   0   0
   0   0   0   0   0   0   0   0   0   0
   0   0   0   0   0   0   0   0   0   0
   0   0   0   0   0   0   0   0   0   0
   0   0   0   0   0
 Symmetry turned off:
 Error termination in Lnk1e.

Since I don't have a manual handy, I can't determine what is causing the 
problem. I tried using NoSym to no avail. Does anybody have any ideas as to
how I can fix this?

-Cory Pye

