From byw@novo.dk  Thu Aug 10 03:33:39 1995
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Date: Thu, 10 Aug 1995 09:23:35 +0200
From: byw@novo.dk (Robert Bywater)
Message-Id: <199508100723.JAA27701@bach>
To: chemistry@ccl.net
Subject: large output files




Devapriya Choudhury asks :

>Where can I find code (preferably in FORTRAN) which can do pairwise
>superimposition of around 5000 molecules ( each having less than 20 atoms 
>and give the RMSE for each pair.
 
--- Dear Dr. Choudhury
--- Superimposing molecules ( molecular skeletons, I presume ) is
--- an easy task in principle - one of the best methods is the
--- quaternion method of A.L. Mackay in Acta. Cryst. (1984) A40
--- 165-166. It is not a difficult task to write a program to
--- do this calculation in e.g. FORTRAN. But you have set yourself
--- a massive task if you want to calculate RMSE's for each pair
--- out of a family of 5000 compounds. If you want to store the
--- results on one line of text ( 80 characters ) for each
--- pair you will need something like 12497500 * 160 bytes of 
--- storage or approx. 2 GB.  Good luck !

Robert Bywater




  
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From rickr@scripps.edu  Thu Aug 10 08:18:07 1995
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From: rickr@scripps.edu (Rick Ross)
Message-Id: <9508101213.AA20288@aries.Scripps.EDU>
To: chemistry@ccl.net
Subject: mopac93R2 compiling response summary


Hi Folks,
   Below is a summary of responses to the MOPAC93 Release 2 question I posted
yesterday.

***************  The question again:

I was wondering if anyone has been successful in compiling, linking, and
running MOPAC93R2 on SGI workstations.  With the help of some             
other folks (thanks!) I have been able to compile and link the program.
However, when I run the program (for ethylene for example), instead of
getting numbers for heats of fomration, etc., I get "nan".

*************Summary of responses:

I received sevenral responses including a makefile and offers to help me
debug mine (thanks!).  Several folks also suggested I check 
to make sure I am compiling
with the -static option.  The -static option turned out to be the key.
Turns out that I had a few subroutines not being compiled with the option
which caused the difficulties.

Thanks to the CCL and in particular

Ken Fountain
Jon Erickson
John M. McKelvey
Georg Ostertag
William A. Wylie
Ralph J. Wolf
Victor M. Rosas Garcia
Luke Anthony Burke
Dr. Satyam Priyadarshy

Thanks again and With best regards,
Rick Ross


From sschulz@chemie.fu-berlin.de  Thu Aug 10 11:26:25 1995
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From: Stefan Schulz <sschulz@chemie.fu-berlin.de>
Subject: ECP in GAMESS-US & GAUSSIAN92
To: chemistry@ccl.net
Date: Thu, 10 Aug 95 17:11:10 MESZ
X-Hpvue$Revision: 1.8 $
Mime-Version: 1.0
Content-Type: Message/rfc822
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Mailer: Elm [revision: 70.85]


Hi CCLers,


I am currently using some general effective core potentials
for sodium and nitrogen with the program GAMESS-US.
The input I use to describe them within GAMESS-US is 
as follows


 $ECP
 Na-ECP GEN  2  1
 3 
   -1.361911  1  76.2365
   -1.715443  2  22.5231
   -0.000102  2   1.6068
 5 
    1.877655  0   1.5008
    3.140947  1   8.2166
  -32.322246  2   3.9471
   31.911208  2   3.0990
  -14.538661  2   2.4783
 N-ECP GEN  2  1
 3 
   -1.456021  1  73.0888
   -4.872023  2  25.3408
   -0.670937  2   7.4794
 4 
    3.273330  0   2.3860
   -9.608747  1   8.1610
   69.864206  2   4.7425
  -60.381084  2   4.1726
 H-ECP NONE
 H-ECP NONE
 H-ECP NONE
 $END

which apparently works quite fine. My problem is that 
now I want to use the same effective core potentials
with GAUSSIAN92 and have used the following input:


7 7 9 9 9
Na-ECP 1  2
 3
1   76.2365   -1.361911
2   22.5231   -1.715443
2    1.6068   -0.000102
 5
0    1.5008    1.877655
1    8.2166    3.140947
2    3.9471  -32.322246
2    3.0990   31.911208
2    2.4783  -14.538661
 N-ECP 1  2
 3
1   73.0888   -1.456021
2   25.3408   -4.872023
2    7.4794   -0.670937
 4
0    2.3860    3.273330
1    8.1610   -9.608747
2    4.7425   69.864206
2    4.1726  -60.381084

Does anybody out there have an idea if these two 
inputs really describe the same thing? There must
be some difference since I get different results using
these inputs ! (Since I also use a general basis set
including D functions I have of course used the 
keyword 6d ) Having already checked the rest of my
input file for consistency  everything seems to 
be right. Could it be that one program does
include the R^2 Jacobian factor into the power of R
and the other does not ?

Is there perhaps a tool to facilitate the migration
of input files from GAMESS-US to GAUSSIAN92 and back ?

Any help will be greatly appreciated !

Thanks


PS Sorry for the somewhat lengthy problem description.


Regards


Stefan Schulz

--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
|                              |            Stefan Schulz             |
| sschulz@chemie.fu-berlin.de  | FU Berlin - Theoretical Chemistry    |
| Tel. ++49/30/838 5384 (2351) |            Takustrasse 3             |
| FAX. ++49/30/838 4792        |           D-14195 Berlin             |
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From Jeffrey.Gosper@brunel.ac.uk  Thu Aug 10 11:56:33 1995
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Date: Thu, 10 Aug 1995 16:42:03 BST
From: Jeffrey J Gosper <Jeffrey.Gosper@brunel.ac.uk>
Reply-To: Jeffrey.Gosper@brunel.ac.uk
Subject: MOPAC reaction path calculations
To: chemistry@ccl.net
Message-ID: <ECS9508101603A@brunel.ac.uk>
Priority: Normal
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Content-Type: TEXT/PLAIN; CHARSET=US-ASCII


I am trying to locate computational studies that make use of the 
reaction path calculation offered by MOPAC (i.e. use of the -1 
optimization flag). I would therefore appreciate any pointers to 
published work on this matter.

I'll summarize any responses as usual.

/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
 Dr. Jeff Gosper                                         
 Dept. of Chemistry		                        
 BRUNEL University                                     
 Uxbridge Middx UB8 3PH, UK                            
 voice:  01895 274000 x2187                            
 facsim: 01895 256844                                  
 internet/email/work:   Jeffrey.Gosper@brunel.ac.uk     
 internet/WWW: http://http2.brunel.ac.uk:8080/~castjjg 
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/



From masayuki@hsc.usc.edu  Thu Aug 10 14:56:29 1995
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Date: Thu, 10 Aug 95 11:53:17 PDT
From: Masayuki Yuki <masayuki@hsc.usc.edu>
To: chemistry@ccl.net
Subject: Summary:New Version of MOPAC
Message-ID: <CMM.0.90.2.808080797.masayuki@hsc.usc.edu>


Dear CCL Subscribers,

My question was the following:
I use MOPAC 6.0 for parametrization and partial charge calculation of
molecules whose parameters are not available in AMBER 4.0 force field.  Is
there a later version of MOPAC?  If there is, what is the difference from
MOPAC 6.0?  Does it result in improved parametrization?  Is it worth getting
it?  Is there an ftp site from which I can get it?  

Thank you for everyone who has responded to my question.  In summary, the new
versions of MOPAC are MOPAC7, MOPAC93, and AMPAC 5.0.  MOPAC 7 and MOPAC93
yield the same result as MOPAC6.  MOPAC93 is available from QCPE for $150. 
AMPAC 5.0 is available from Semichem, Inc.  

Dr. Roberto Rivelino de M Moreno, here is the summary of the responses.  

Dear Masayuki,

you wrote:
>
>I use MOPAC 6.0 for parametrization and partial charge calculation of
>molecules whose parameters are not available in AMBER 4.0 force field.  Is
>there a later version of MOPAC?  If there is, what is the difference from
>MOPAC 6.0?  Does it result in improved parametrization?  Is it worth getting
>it?  Is there an ftp site from which I can get it?  

Yes, there is a newer version: MOPAC7 (for developers) and MOPAC93 (for 
production work), both are more or less the same. The main difference between
version 6 and 93 are some added functionality like a solvent model, and some
improved optimization routines. I haven't seen any significant speed-up of the
calculations, however, the EF optimization seems to be a real improvement.

No, the results would be the same for your parametrization and you have to 
decide for yourself whether to get or not. Many tools are for MOPAC6 output
and therefore have to be rewritten for the slightly different MOPAC93 results
(or the output of version 93 has to be modified).

MOPAC93 is available from QCPE at their normal cost (about 150 US$). MOPAC7
is in the archive of this list (http://www.ccl.net/ccl/cca.html).

Hope this helps,


Cheers!

                                  Rainer.


  Rainer Koch
  Department of Chemistry
  University of Queensland
  Brisbane, Queensland 4072

  koch@chem.chemistry.uq.oz.au


>  : Hello Masayuki
>  : 
>  : Could I share with you all replies you could receive ?
>  : Thank you in advance.
>  : 
>  : Roberto Rivelino de M. Moreno
>  : Instituto de Quimica
>  : Universidade Federal da Bahia - Brasil
>  : e-mail: rivelino@ufba.br



The version recommended for academic use is MOPAC 93, available from
QCPE.  It has no, or few, new parameters, but runs much faster and is more
robust than MOPAC 6.

Jimmy Stewart



Dear Dr. Yuki,

In reply to:

>   Is there a later version of MOPAC?  If there is, what is the 
> difference from MOPAC 6.0? 

There is indeed a more recent version of MOPAC available, version 7.0.

I would like to suggest to you AMPAC 5.0 with Graphical User Interface
as an excellent alternative to MOPAC.  My company sells and supports AMPAC,
which is a much advanced version of the old MOPAC and is front-ended by an 
excellent graphics interface.  There are also new parameterizations in AMPAC 
that are not present even in the newest versions of MOPAC.  I would be happy 
to forward you additional information if you would provide me with your 
regular mail address.

Best regards, Andy Holder

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    DR. ANDREW HOLDER
                         President
 
Semichem, Inc.            ||  Internet Addr: aholder@cctr.umkc.edu
7128 Summit               ||  Phone Number:  (913) 268-3271
Shawnee, KS,  66216       ||  FAX Number:    (913) 268-3445
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 



From jkl@ccl.net  Thu Aug 10 21:08:59 1995
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From: Jan Labanowski <jkl@ccl.net>
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Date: Thu, 10 Aug 1995 21:03:39 -0400
Message-Id: <199508110103.VAA00625@krakow.ccl.net>
To: chemistry@ccl.net
Subject: this is a test
Cc: jkl@ccl.net


This is a test of chemistry
-- 

Dr. Jan K. Labanowski, Senior Research/Supercomputer Scientist/Specialist, etc.
Ohio Supercomputer Center, 1224 Kinnear Rd, Columbus, OH 43212-1163
ph:(614)-292-9279,  FAX:(614)-292-7168,  E-mail: jkl@ccl.net  JKL@OHSTPY.BITNET


From jkl@ccl.net  Thu Aug 10 21:55:57 1995
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Received: (from mito@localhost) by aqua.chem.nagoya-u.ac.jp (8.6.9+2.4W/3.3Wb-94112516) id KAA02582; Fri, 11 Aug 1995 10:49:47 +0900
Date: Fri, 11 Aug 1995 10:49:47 +0900
From: Masakatsu Ito <mito@aqua.chem.nagoya-u.ac.jp>
Message-Id: <199508110149.KAA02582@aqua.chem.nagoya-u.ac.jp>
To: chemistry@ccl.net
CC: kando@postman.riken.go.jp
Subject: Summary: The photoproduction of cis,trans-C8H10 ...


Hello Netters,

	I have recently posted a question about the photo-
isomerization yield of all trans-octatetraene and the ratio
of cis,trans-isomer to all trans-one. Barry R Smith 
<barry@chem3.ch.kcl.ac.uk> have told me the very useful literature.
I'm very gratefull to him.

He recommended:

1."Octatetraene Photoisomerization",Bryan E. Kohler,
  Chem. Rev. 1993, 93, 41-54

And it contains other useful references.

2."cis-trans photoisomerization of 1,3,5,7-octatetraene in 
  n-hexane at 4.2K", M.F.Grandville,G.R.Holtom, and B.E.Kohler,
  Proc.Natl.Acad.Sci.USA,77,31-33(1980)
3."Radiationless decay of 1,3,5,7-octatetraene",J.R.Ackerman and
  B.E.Kohler,J.Chem.Phys.,77,3967(1982)
4."Double-bond isomerization barrier in the 2Ag excited singlet
  state of cis,trans-1,3,5,7-octatetraene",J.R.Ackerman and 
  B.E.Kohler,J.Am.Chem.Soc.,106,3681(1984)
5."Barriers in the excited 2Ag state for the cis,trans isomerization
  of cis,cis-octatetrane: General features of the excited state
  potentical",B.E.Kohler,P.Mitra, and P.West,J.Chem.Phys.,85,4436
  (1986)
6."Photochemical hole burning for 1,3,5,7-octatetrane in n-hexane",
  G.Adamson,G.Gradl, and B.E.Kohler, J.Chem.Phys.,90,3038(1989)

So far I cannot find the information about the photoismorization
yield. But I've got other interesting information from these
references. Thanks.

Masakatsu Ito
Department of Structual Molecular Science
The Graduate University for Advanced Studies
Tel 81(Japan)-52-789-3656
Fax 81(Japan)-52-789-3551
E-mail mito@aqua.chem.nagoya-u.ac.jp


>From: barry@chem3.ch.kcl.ac.uk (Barry R Smith )
>Message-Id: <9508021002.AA21467@chem3.ch.kcl.ac.uk>
>To: mito@aqua.chem.nagoya-u.ac.jp
>Subject: octatetraene photoisomerization
>
>Try looking at a recent review article titled
>"Octatetraene Photoisomerization" by Bryan E. Kohler
>(Chem. Rev. 1993, 93, 41-54).  I'm not sure if it
>says much about the yields, but is a good place to
>start + contains lots of other references.
>
>Barry R. Smith, Dept. of Chemistry, King's College London, UK.





