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From: "Tamas Gunda" <tamasgunda@tigris.klte.hu>
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> From:          Pradipta Bandyopadhyay <pradipta@si.fi.ameslab.gov>

>  Dear CCL members,
>     I have a question about the preparation of input file for large molecules.
>  It is hard to use z-matrix input for a large molecule. So I decided to use
>  some drawing software to draw the molecule and then extract the coordinates
>  using 'BABEL'. I have been using ISIS Draw 2.2.1. However, all structures
>  drawn by me are coming as planar  i.e. Z-coordinates are all zero. My
>  question is 
>      Am I making some mistake or is it intrinsic to ISIS?
>         and
>      is there any other software, which can do the things better?
>        and
>      what is the standard way of generating input file for a large molecule
>     (say, has 100 atoms) i.e. my way is correct or not?
>  Thanks for your help. I will summarize the replies.
>                                           Pradipta


Dear Pradipta,


ISIS Draw is a sketch program, so you can create only "flat"
molecules in 2D. You need something to convert them into
real 3D molecules. There are a lot of modeling 
programs for this. As a quick solution, you can download
from the ACD LAbs homepage (www.acdlabs.com) a free plug-in
for ISIS/Draw, which can make this conversion. You can
then export the molecule as a 3D molfile into other programs

Hope this helps

best regards

Tamas Gunda 

************************************************************************
   Dr Tamas E. Gunda                   phone: (+36-52) 316666-2479
   Research Group of Antibiotics       fax  : (+36-52) 512914
   L. Kossuth University               e-mail: tamasgunda@tigris.klte.hu
   POBox 36                     http://dragon.klte.hu/~gundat               
   H-4010 Debrecen
   Hungary
************************************************************************
From chemistry-request@server.ccl.net  Thu Aug 12 05:23:05 1999
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From: Szieberth Denes <dino@iris.inc.bme.hu>
To: Gary Kedziora <kedziora@chem.nwu.edu>
cc: chemistry@ccl.net
Subject: Re: CCL:Xeon processors
In-Reply-To: <199908111419.JAA27164@mercury.chem.nwu.edu>
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> Has anyone seen a comparison of the performance of a Xeon processor
> with a straight Pentium II or III at the same (or nearly the same)
> clock speed?  I'm interested in performance comparisons using
> the usual chemistry applications, good cache-optimized code--
> not implying there is no good cache-optimized chemistry code--or 
> any other benchmark.
> 
Hi,
I was testing a normal pII450 against a pII450 xeon with 1024 kb cache.
The application was Gaussian94 compiled with the f2c-gcc combination, the
tests jobs were geom. optimizations and freq. calculations on 10-atom
molecules with 70-250 basis functions and the results were disappointing:
the xeon was only about 5 % faster, despite the bigger and faster cache.

				dino   
				dino@iris.inc.bme.hu


From chemistry-request@server.ccl.net  Tue Aug 10 00:03:37 1999
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TORONTO: August 5th 1999 - ACD announces their NEW Free Stuff Web Page 

Here at Advanced Chemistry DEvelopment we are proud of the fact that our
offer of free software to the chemical community has been welcomed and
recently we celebrated over 23,000 downloads of our Chemsketch drawing
software. We have continued to expand our list of downloads to include
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We are always looking for customer feedback to help improve our website so
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*********************************************************
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                         U.S. Office
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From chemistry-request@server.ccl.net  Tue Aug 10 05:07:10 1999
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From: "Andrei Losev" <maricont@glasnet.ru>
To: <chemistry@ccl.net>
Subject: WEB SITE
Date: Tue, 10 Aug 1999 13:02:35 +0400
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Dear Colleague,

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Fax: (619) 794 4931
Email:maricont@glasnet.ru
chemdiv@pacbell.net



From chemistry-request@server.ccl.net  Tue Aug 10 05:26:37 1999
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From: Elmar Gerwalin <gerwalin@rhrk.uni-kl.de>
To: chemistry@www.ccl.net
Subject: Good experimental Vibration Spectra ?
Cc: gerwalin@rhrk.uni-kl.de

Hi
I'm looking for a source on good exerimental vibrational spectra to
use them for comparison to my calculations.
Do I have to search for each species separarely or is there a
collection of such data available.
The old IR/Raman collections (only pictures mostly) from the 70s are not 
up to date, I think.

Of most interest is the knowledge of the fundamentals, the species
I'm investigating are "normal" hydrocarbons (CH, CHO-compounds).

I'd appreciate any help: links, hints, references

Thanks in advance
Elmar

From chemistry-request@server.ccl.net  Wed Aug 11 09:46:49 1999
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Dear all:

Does anyone know any references about the numerical algorithms
for the three-dimensional B spline interpolation? Are there any
FORTRAN subroutine for this method?

Your help will be highly appreciated.

Y.Z


_______________________________________________________________
Get Free Email and Do More On The Web. Visit http://www.msn.com
From chemistry-request@server.ccl.net  Wed Aug 11 11:16:07 1999
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From: Marcos Villarreal <marcos@fer-net.fcq.unc.edu.ar>
Organization: UNC, Dpto. Qca. Biol.-CIQUIBIC
To: chemistry@ccl.net
Subject: Parallel CHARMM
Date: Wed, 11 Aug 1999 11:36:41 -0400
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Dear all,

For a cuple of weeks I been triying to compile a parralel version of CHARMM 26b1
in my dual PII 266 using Red Hat 6.0 with the 2.2.5smp kernel.
I downloaded pvm 3.41, compiled it for smp (with the -DSHMEM key) and run the
examples. All seems to work Ok. 
Then I compiled CHARMM with install.com gnu medium P. No errors but parallel
don't work. Then I triyed with a pref.dat with PVM PARALLEL PARAFULL instead
the provided with install.com. I don't worked nether.

Also I downloaded the LAM 6.3 MPI implementation and acording to the test
provided with the distribution it works OK on my machine. Then I compiled with
CMPI  PARALLEL PARAFULL in pref.dat. Again no errors diring the compilation 
but parallel dont work.

Could anybody please help? 
Answers  (if any) will be summarized.

Thanks  in advance.


-----------------------------------------------
PhD student Marcos Villarreal
Departamento de Quimica Biologica
Facultad de Ciencias Quimicas
Universidad Nacional de Cordoba


From chemistry-request@server.ccl.net  Wed Aug 11 16:08:52 1999
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Reply-To: <daniel.tedder@che.gatech.edu>
From: "Dan Tedder" <daniel.tedder@che.gatech.edu>
To: <chemistry@ccl.net>
Date: Wed, 11 Aug 1999 16:03:28 -0400
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Is anyone aware of work using fractals to model molecular properties? Please
advise and I'll summarize the responses.

Dan Tedder
School of Chemical Engineering
778 Atlantic Drive
Georgia Institute of Technology
Atlanta, GA 30332-0100
daniel.tedder@che.gatech.edu
404-894-2856

From chemistry-request@server.ccl.net  Thu Aug 12 04:14:05 1999
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Does anyone know of a good review article about the significance of
dipole-dipole
interactions in protein-ligand and protein-protein binding?

Enrique Carredano, MSc, PhD            +46 18 16 50 00 tel
Polymer and Surface Chemistry          +46 18 16 50 42 direct
Amersham Pharmacia Biotech             +46 18 16 63 96 fax
Bjorkg 30, 751 84 Uppsala Sweden       enrique.carredano@eu.apbiotech.com


From chemistry-request@server.ccl.net  Thu Aug 12 04:15:04 1999
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Date: Thu, 12 Aug 1999 09:09:46 +0100 (BST)
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To: Computational Chemistry List <chemistry@ccl.net>
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Together with colleagues at the Unversity of Oxford, I am developing an
LCAO DFT code that handles solids as well as molecules. It makes use of
numerical orbitals (somewhat akin to DMol3). For a cell containing 64
atoms of silicon with a DZP basis set (sp s*p* d), and using 4 kpoints,
95% of the time is spent on diagonalising the Hamiltonian (lapack is being
used). Clearly a scheme that only generates the first few eigenstates
(20%) is needed to reduce this time. What would people recommend?  
Contenders that I have encountered so far are Arpack and Lapack 3.

Best regards,

Andrew

  +----------------------------------------------------+
   Andrew Horsfield       e-mail: horsfield@fecit.co.uk 
     FECIT, 2 Longwalk Road, Stockley Park, Uxbridge,   
          Middlesex UB11 1AB, United Kingdom.           
   phone: +44-(0)181-606-4653  FAX: +44-(0)181-606-4422 
  +----------------------------------------------------+

From chemistry-request@server.ccl.net  Thu Aug 12 06:45:30 1999
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Date: Thu, 12 Aug 1999 03:48:27 -0700 (PDT)
From: "Michael D. Bartberger" <mdb@chem.ucla.edu>
To: Szieberth Denes <dino@iris.inc.bme.hu>
cc: Gary Kedziora <kedziora@chem.nwu.edu>, chemistry@ccl.net
Subject: Re: CCL:Xeon processors
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Dear Dino and Gary:

Thanks for posting this; these are very valuable numbers to know,
especially with the high price of the Xeon processors.

Now, this only leaves me to wonder if anyone has been able to get
hold of one of an AMD Athlon-based system for some testing.... 
it would appear that AMD has at last surpassed Intel, at least for 
now, in raw FPU performance.   Some computing magazines and web sites
have recieved test boxes and the results are surprising, to say
the least!

With best regards,
-Michael Bartberger
 UCLA




On Thu, 12 Aug 1999, Szieberth Denes wrote:

> 
> 
> > Has anyone seen a comparison of the performance of a Xeon processor
> > with a straight Pentium II or III at the same (or nearly the same)
> > clock speed?  I'm interested in performance comparisons using
> > the usual chemistry applications, good cache-optimized code--
> > not implying there is no good cache-optimized chemistry code--or 
> > any other benchmark.
> > 
> Hi,
> I was testing a normal pII450 against a pII450 xeon with 1024 kb cache.
> The application was Gaussian94 compiled with the f2c-gcc combination, the
> tests jobs were geom. optimizations and freq. calculations on 10-atom
> molecules with 70-250 basis functions and the results were disappointing:
> the xeon was only about 5 % faster, despite the bigger and faster cache.
> 
> 				dino   
> 				dino@iris.inc.bme.hu
> 
> 
> 
> -= This is automatically added to each message by mailing script =-
> CHEMISTRY@ccl.net -- To Everybody    |   CHEMISTRY-REQUEST@ccl.net -- To Admins
> MAILSERV@ccl.net -- HELP CHEMISTRY or HELP SEARCH
> CHEMISTRY-SEARCH@ccl.net -- archive search    |    Gopher: gopher.ccl.net 70
> Ftp: ftp.ccl.net  |  WWW: http://www.ccl.net/chemistry/   | Jan: jkl@ccl.net
> 
> 
> 
> 
> 
> 

From chemistry-request@server.ccl.net  Thu Aug 12 12:09:51 1999
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Subject: BSSE should not affect gradient
X-Sun-Charset: US-ASCII

Dear CCL friends,
  BSSE accounts for some percents in the interaction energy
computed from MO calculation based on supermolecule
approach. There are several methods out there to correct the
BSSE. I used to have a long debate with friends that if 
I only want to use the gradient not the energy, my calculation
should not suffer from BSSE. I tried to explain to him that
the BSSE-corrected potential energy surface (PES) should
get along with the uncorrected one smoothly, if not parallely.
Yes, the depth may be different but slope should be equal.
I have made some calculations to prove my idea and I think
it works. However, he may say that this works only for some
system.
   Question is ..... does BSSE affect gradient ? Is there
any theory or paper doing on this issue ? I need only
the answer but some clever man could take this to make
a publication.
   Thanks and I hope to hear from you.
best wishes,
Teerakiat
------------------------------------------------------------------------
Teerakiat Kerdcharoen, Ph.D.

Profession:  University Lecturer
Address:     Department of Physics, Faculty of Science
             Mahidol University, Bangkok 10400  THAILAND
Office:      (66)(2)2461381      FAX (66)(2)2461381
Cellular:    (66)(1)9031130
Home:        (66)(2)5893099      FAX (66)(2)9547395
E-mail:      sctkc@mahidol.ac.th, noy@atc.atccu.chula.ac.th
WWW:         http://einstein.sc.mahidol.ac.th/simulation     
Research:    Molecular Simulation / Computational Nanotechnology
ICQ number:  Unusable now, please see again in the future .....
------------------------------------------------------------------------

From chemistry-request@server.ccl.net  Thu Aug 12 13:58:33 1999
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From: Richard Gillilan <richard@tc.cornell.edu>
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To: Y Z <yz0@hotmail.com>
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Y Z wrote:
> 
> Dear all:
> 
> Does anyone know any references about the numerical algorithms
> for the three-dimensional B spline interpolation? Are there any
> FORTRAN subroutine for this method?

"A Practical Guide to Splines" by Carl de Boor 
Applied Mathematical Sciences Vol 27
Springer-Verlag 1985
(QA1.A647)

is a classic text that contains Fortran code listings. 
Perhaps practical to applied mathematicians but I find it impenetrable

A much easier book is  "The NURBS Book"
Les Piegl and Wayne Tiller Chaps 2,3
Springer, New York
QA 224 .P54x 1995

It contains short snippets of highly optimized C code that could be translated
to Fortran without too much trouble (if you must).

Beware: the B-spline formula is easy to apply incorrectly. Make sure your knot
        vectors and control points are centered on the interval containing the
        point to be evaluated.

You are also welcome to my version of the code (C++).

Richard Gillilan
Cornell Theory Center


ps. May I ask why you are interested?
From chemistry-request@server.ccl.net  Thu Aug 12 20:19:34 1999
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From: "Nicholas Sobb" <nsobb@compudrug.com>
To: "Jon Sorenson" <jsorenso@water.lbl.gov>
Cc: <chemistry@ccl.net>
References: <Pine.A32.3.95.990804180807.14028A-100000@water.lbl.gov>
Subject: Re: CCL:cLogP calculator
Date: Thu, 12 Aug 1999 17:13:27 -0700
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> > Subj:  cLogP calculator
>
> > Hello,  We have an ISIS database for our synthetic compound collection
> > (>20,000 cmpds right now).  We would like to add a well-validated
> > computational package for determining cLogP values.  Any suggestions out
> > there?  Thanks in advance!

CompuDrug's PrologP: Predicts partition coefficient of organic compounds in
octonal/water system.  Combines three different estimation methods based
upon the compound fragment/atoms.  Available in Windows and UNIX platforms.
DLL predictive engine for is available for in-house software developers.

Demo available at www.compudrug.com

Also available are programs predicting physico-chemical parameters (pKalc,
PrologP and PrologD), metabolism pathways (MetabolExpert), toxic effects
(HazardExpert) of compounds and assisting in HPLC method development
(EluEx).

Sincerely,

Nicholas Sobb



From chemistry-request@server.ccl.net  Thu Aug 12 14:12:18 1999
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From: "Y Z" <yz0@hotmail.com>
To: tjo@acm.org, yz0@hotmail.com, chemistry@ccl.net
Subject: Re: CCL:3D B-spline Interpolation
Date: Thu, 12 Aug 1999 14:06:13 EDT
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Thank you for your message.
I checked that book:

"Numerical Recipes in FORTRAN 77" 2nd Edition (Vol1)

William H. Press

The algorithem is Bicubic Interpolation but not the B-spline
interpolation.

Can you specify which pages for your algorithm?

Thank you for your help.

Y.Z.




>From: TJ O'Donnell <tjbear@home.com>
>Reply-To: tjo@acm.org
>To: Y Z <yz0@hotmail.com>, chemistry@ccl.net
>Subject: Re: CCL:3D B-spline Interpolation
>Date: Thu, 12 Aug 1999 10:34:02 -0500
>
>There is an algorithm in "Numerical Recipes"
>for multi-dimensional B-spline interpolation.
>The code is there too, in Fortran or C.  Take your pick.
>
>TJ O'Donnell
>tjo@acm.org
>
>Y Z wrote:
> >
> > Dear all:
> >
> > Does anyone know any references about the numerical algorithms
> > for the three-dimensional B spline interpolation? Are there any
> > FORTRAN subroutine for this method?
> >
> > Your help will be highly appreciated.
> >
> > Y.Z
> >
> > _______________________________________________________________
> > Get Free Email and Do More On The Web. Visit http://www.msn.com
> >
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>jkl@ccl.net


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There is an algorithm in "Numerical Recipes"
for multi-dimensional B-spline interpolation.
The code is there too, in Fortran or C.  Take your pick.

TJ O'Donnell
tjo@acm.org

Y Z wrote:
> 
> Dear all:
> 
> Does anyone know any references about the numerical algorithms
> for the three-dimensional B spline interpolation? Are there any
> FORTRAN subroutine for this method?
> 
> Your help will be highly appreciated.
> 
> Y.Z
> 
> _______________________________________________________________
> Get Free Email and Do More On The Web. Visit http://www.msn.com
> 
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Date: Thu, 12 Aug 1999 03:48:27 -0600
From: "Michael D. Bartberger" <mdb@chem.ucla.edu>
To: <dino@iris.inc.bme.hu>
Cc: <kedziora@chem.nwu.edu>, <chemistry@ccl.net>, <kedziora@chem.nwu.edu>,
        <chemistry@ccl.net>
Subject: CCL:Xeon processors 
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Dear Dino and Gary:

Thanks for posting this; these are very valuable numbers to know,
especially with the high price of the Xeon processors.

Now, this only leaves me to wonder if anyone has been able to get
hold of one of an AMD Athlon-based system for some testing.... 
it would appear that AMD has at last surpassed Intel, at least for 
now, in raw FPU performance.   Some computing magazines and web sites
have recieved test boxes and the results are surprising, to say
the least!

With best regards,
-Michael Bartberger
 UCLA




On Thu, 12 Aug 1999, Szieberth Denes wrote:

> 
> 
> > Has anyone seen a comparison of the performance of a Xeon processor
> > with a straight Pentium II or III at the same (or nearly the same)
> > clock speed?  I'm interested in performance comparisons using
> > the usual chemistry applications, good cache-optimized code--
> > not implying there is no good cache-optimized chemistry code--or 
> > any other benchmark.
> > 
> Hi,
> I was testing a normal pII450 against a pII450 xeon with 1024 kb cache.
> The application was Gaussian94 compiled with the f2c-gcc combination, the
> tests jobs were geom. optimizations and freq. calculations on 10-atom
> molecules with 70-250 basis functions and the results were disappointing:
> the xeon was only about 5 % faster, despite the bigger and faster cache.
> 
>                                 dino   
>                                 dino@iris.inc.bme.hu
> 
> 
> 
> 
> 
> 
> 
> 
> 


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From: Richard Gillilan <richard@tc.cornell.edu>
To: <yz0@hotmail.com>
Cc: <chemistry@ccl.net>, <chemistry@ccl.net>
Subject: CCL:3D B-spline Interpolation 
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Y Z wrote:
> 
> Dear all:
> 
> Does anyone know any references about the numerical algorithms
> for the three-dimensional B spline interpolation? Are there any
> FORTRAN subroutine for this method?

"A Practical Guide to Splines" by Carl de Boor 
Applied Mathematical Sciences Vol 27
Springer-Verlag 1985
(QA1.A647)

is a classic text that contains Fortran code listings. 
Perhaps practical to applied mathematicians but I find it impenetrable

A much easier book is  "The NURBS Book"
Les Piegl and Wayne Tiller Chaps 2,3
Springer, New York
QA 224 .P54x 1995

It contains short snippets of highly optimized C code that could be translated
to Fortran without too much trouble (if you must).

Beware: the B-spline formula is easy to apply incorrectly. Make sure your knot
        vectors and control points are centered on the interval containing the
        point to be evaluated.

You are also welcome to my version of the code (C++).

Richard Gillilan
Cornell Theory Center


ps. May I ask why you are interested?

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From chemistry-request@server.ccl.net  Thu Aug 12 16:14:13 1999
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Date: Thu, 12 Aug 1999 17:15:33 -0300 (ART)
From: Marcos Villarreal <arloa@dqo.fcq.unc.edu.ar>
To: chemistry@ccl.net
Subject: Parallel CHARMM
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Dear all,


For a cuple of weeks I been triying to compile a
parralel version of CHARMM 26b1 in my dual PII 266 using Red Hat 6.0 with
the 2.2.5smp kernel. 
I downloaded pvm 3.41, compiled it for smp (with the -DSHMEM key) and run
the examples. All seems to work Ok. Then I compiled CHARMM with
install.com gnu medium P. No errors but parallel don't work.
Then I triyed with a pref.dat with PVM PARALLEL PARAFULL instead the
provided with install.com. I don't worked nether. Also I downloaded the
LAM 6.3 MPI implementation and acording to the test provided with the
distribution it works OK on my machine. Then I compiled with CMPI PARALLEL
PARAFULL in pref.dat. Again no errors diring the compilation but parallel
dont work.

Could anybody please help? Answers (if any) will be summarized.

Thanks in advance.

PhD student Marcos Villarreal
Departamento de Quimica Biologica. 
Facultad de Ciencias Quimicas. 
Universidad Nacional de Cordoba.
Argentina.

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Date: Thu, 12 Aug 1999 17:13:27 -0600
From: "Nicholas Sobb" <nsobb@compudrug.com>
To: <jsorenso@water.lbl.gov>
Cc: <chemistry@ccl.net>, <chemistry@ccl.net>
Subject: CCL:cLogP calculator 
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> > Subj:  cLogP calculator
>
> > Hello,  We have an ISIS database for our synthetic compound collection
> > (>20,000 cmpds right now).  We would like to add a well-validated
> > computational package for determining cLogP values.  Any suggestions out
> > there?  Thanks in advance!

CompuDrug's PrologP: Predicts partition coefficient of organic compounds in
octonal/water system.  Combines three different estimation methods based
upon the compound fragment/atoms.  Available in Windows and UNIX platforms.
DLL predictive engine for is available for in-house software developers.

Demo available at www.compudrug.com

Also available are programs predicting physico-chemical parameters (pKalc,
PrologP and PrologD), metabolism pathways (MetabolExpert), toxic effects
(HazardExpert) of compounds and assisting in HPLC method development
(EluEx).

Sincerely,

Nicholas Sobb




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From chemistry-request@server.ccl.net  Thu Aug 12 23:07:51 1999
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Dear Sir,

I am a beginner to the field of relativistic MO caln. (Dirac-Fock)
I would like to know the computational requirement (CPU time and 
memory) for doing a geometry optimization. How does it compare to 
conventional SCF method and other correlated MO techniques?
Thanks for any help.

Regards,
Daniel

-- 
Office: (852)-2766 5629
Fax:    (852)-2364 9932
Department of Applied Biology and Chemical Technology
The Hong Kong Polytechnic University.
