From chemistry-request@ccl.net Wed Sep  3 02:41:37 2003
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From: Anil Korkut <ak2048/at/columbia.edu>
Sender: ak2048/at/columbia.edu
To: chemistry/at/ccl.net
Subject: Normal mode calculation with TINKER
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Hi,
I like to make a normal mode analysis of a protein molecule with 4800
atoms (including hydrogens) using TINKER and I have two questions
1-I was able to minimize the structure to a gradient of 0.0000 using the
truncated newton method and Amber96 parameters.
Do you think this is enough to get non-negative eigenvectors?
2-I am trying to increase the maxvib to 15000 and MAxhess to 2000000 in
sizes.i file but when I
do so, the vibrate.f code can
not be compiled due to memory limitations on my PC. what should be the
minimum memory in order to compile the vibrate.f while the
MAxvib=15000
Maxhess=2000000
thanks
Anil Korkut


From chemistry-request@ccl.net Wed Sep  3 08:31:15 2003
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From: "Jens Spanget-Larsen" <spanget*at*virgil.ruc.dk>
Organization: Roskilde Universitetscenter
To: Piero Ugliengo <piero.ugliengo*at*unito.it>,
   "Computational Chemistry List" <chemistry*at*ccl.net>
Date: Wed, 3 Sep 2003 14:30:42 +0200
Subject: Re: CCL:IR intensity conversion factor
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Piero Ugliengo:

> I would like to know the exact formula that Gaussian98 is
> using to convert the square of derivative of the
> dipole moment with respect to a displacement
> into the IR intensity in KM/mol.

Dear Piero,
you will find a general discussion of the problem, with 
references to the literature, in this paper (particularly page 
715):

B. A. Hess, Jr., L. J. Schaad, P. Carsky, R. Zahradnik, Chem. 
Rev. 86, 709-730 (1986)

Yours, Jens >--< 



=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
JENS SPANGET-LARSEN         Office:         +45 4674 2710
Department of Chemistry     Fax:            +45 4674 3011
Roskilde University (RUC)   Mobile:         +45 2320 6246
P.O.Box 260                 E-Mail:        spanget*at*ruc.dk
DK-4000 Roskilde, Denmark   http://virgil.ruc.dk/~spanget
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=


From chemistry-request@ccl.net Wed Sep  3 09:01:51 2003
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From: Rolf Trinoga <trinoga..at..mpi-muelheim.mpg.de>
Reply-To: trinoga..at..mpi-muelheim.mpg.de
Organization: Max-Planck-Institut fuer Strahlenchemie
To: chemistry..at..ccl.net
Subject: error compiling g03 on RedHat 8.0 with pgi v5.02
Date: Wed, 3 Sep 2003 15:01:03 +0200
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Hi,
after upgrading to the Portland Group Compiler V5.02 on a RedHat 8.0 system
it is not possible to compile g03 rev B01.

[root@icmaster g03]# uname -a
Linux icmaster 2.4.18-14custom #2 SMP Wed May 28 17:59:11 CEST 2003 i686 i686 
i386 GNU/Linux

First the location of the compiler and libs changed to:
$(PGI)/linux86/5.0/

I corrected this:
cd bsd
vi bldg03
Changes in bldg03:
#  else if (-e $PGI/linux86/bin/pgf77) then
  else if (-e $PGI/linux86i/5.0/bin/pgf77) then


vi i386.make
Changes in i386.make:
#PGILIBSL = $(PGI)/linux86/lib/libpgthread.so $(PGI)/linux86/lib/libpgc.so 
$(PGI)/linux86/lib/libpgftnrtl.a
PGILIBSL = $(PGI)/linux86/5.0/lib/libpgthread.so 
$(PGI)/linux86/5.0/lib/libpgc.so $(PGI)/linux86/5.0/lib/libpgftnrtl.a

[root@icmaster bsd]# cd ..
[root@icmaster g03]# chmod +x bsd/install
[root@icmaster g03]# bsd/install
[root@icmaster g03]# bsd/bldg03 >& bldg03.log&
[1] 2109
[root@icmaster g03]#

The compilation stops with this error:
Error while building g03:
make[1]: Leaving directory `/opt/g03'
pgf77   -mp  -O2 -tp p7 -Mreentrant -Mrecursive -Mnosave -Minfo -Mneginfo 
-time -fast -Munroll -Mvect=assoc,recog,cachesize:524288,prefetch,sse 
-fastsse -Mscalarsse -o l202.exe ml202.o  l202.a  util.so   -lm -lc
l202.a(prtsgop.o): In function `prtsgop_':
prtsgop.o(.text+0xa4): undefined reference to `irtyp_'
l202.a(bldgen.o): In function `bldgen_':
bldgen.o(.text+0x38): undefined reference to `iseat1_'
make: *** [l202.exe] Error 2
if ( -e flc ) then
endif

How can I correct this?
Thank you very much in advance.

Best wishes,

Rolf Trinoga
Max-Planck-Institut fuer Bioanorganische Chemie
Stiftstr. 34-36
D-45470 Muelheim a.d. Ruhr
Germany



From chemistry-request@ccl.net Wed Sep  3 09:05:29 2003
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Date: Wed, 3 Sep 2003 15:59:35 +0300
From: "albena" <albena<<at>>shu-bg.net>
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Subject: CCL:to the GAMESS users
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Dear CCLers,

When I do HESSIAN job on already optimized geometry I need at least 6 =
days in order to finish calculations. Unfortunately, it is quite rare to =
have this time (because of many reasons) so my calculations are often =
interrupted. Is there any possibility to accelerate calculations =
(without changing hardware resources), to punch any information within =
the working (interrupted!) files at the next job or to calculate on some =
shared server?=20

There is an input groups as an example (just in case):

 $CONTRL SCFTYP=3DRHF MPLEVL=3D2 RUNTYP=3DHESSIAN COORD=3DZMT NZVAR=3D60 =
$END
 $SYSTEM TIMLIM=3D10000 MEMORY=3D9000000 $END
 $BASIS  GBASIS=3DN31 NGAUSS=3D6 NDFUNC=3D1 $END
 $GUESS GUESS=3DHUCKEL $END
 $FORCE METHOD=3DNUMERIC NVIB=3D1 DECOMP=3D.TRUE. PURIFY=3D.TRUE.
TEMP(1)=3D363,373,383,393,403,413,423,433,443,453 $END
 $STATPT NSTEP=3D50 $END
 $DATA................
 $END
 $ZMAT   IZMAT(1)=3D......................
 $END

Thank you in advance.

Best wishes,

Albena Patleeva
University of Shumen
Shumen, Bulgaria, Universitetska 115
Email: a.patleeva<<at>>shu-bg.net

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Dkoi8-r" http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.2614.3500" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Dear CCLers,</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>When I do HESSIAN job&nbsp;on already =
optimized=20
geometry&nbsp;I need at least 6 days in order to finish calculations.=20
Unfortunately, it is quite rare to&nbsp;have this time (because of many =
reasons)=20
so my calculations are often interrupted. Is there any possibility to =
accelerate=20
calculations (without changing hardware resources), to punch any =
information=20
within the working (interrupted!) files&nbsp;at the next job or to =
calculate=20
on&nbsp;some shared server? </FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>There is an input groups as an example =
(just in=20
case):</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;$CONTRL SCFTYP=3DRHF MPLEVL=3D2 =
RUNTYP=3DHESSIAN=20
COORD=3DZMT NZVAR=3D60 $END<BR>&nbsp;$SYSTEM TIMLIM=3D10000 =
MEMORY=3D9000000=20
$END<BR>&nbsp;$BASIS&nbsp; GBASIS=3DN31 NGAUSS=3D6 NDFUNC=3D1 =
$END<BR>&nbsp;$GUESS=20
GUESS=3DHUCKEL $END<BR>&nbsp;$FORCE METHOD=3DNUMERIC NVIB=3D1 =
DECOMP=3D.TRUE.=20
PURIFY=3D.TRUE.<BR>TEMP(1)=3D363,373,383,393,403,413,423,433,443,453=20
$END<BR>&nbsp;$STATPT NSTEP=3D50=20
$END<BR>&nbsp;$DATA................<BR>&nbsp;$END<BR>&nbsp;$ZMAT&nbsp;&nb=
sp;=20
IZMAT(1)=3D......................<BR>&nbsp;$END<BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Thank you in advance.<BR><BR>Best=20
wishes,<BR><BR>Albena Patleeva</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>University of Shumen<BR>Shumen, =
Bulgaria,=20
Universitetska 115</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Email: <A=20
href=3D"mailto:a.patleeva<<at>>shu-bg.net">a.patleeva<<at>>shu-bg.net</A></DIV></FO=
NT></BODY></HTML>

------=_NextPart_000_0011_01C37234.5FFBA8E0--



From chemistry-request@ccl.net Wed Sep  3 11:13:01 2003
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Date: Wed, 03 Sep 2003 17:12:44 +0200
From: "Steven Kirk" <Steven.Kirk-.at.-htu.se>
To: <chemistry-.at.-ccl.net>
Subject: Basis sets needed - 1,4-Benzenedithiol and (2-) ion
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Hello,

I would be grateful if anyone who has good all-electron basis sets for the following molecule and its (2-) ion:

Registry Number:     29878-58-8

CA Index Name:   1,4-Benzenedithiol

could send them to me, or indicate an alternative location where I can find them.

Many thanks in advance,
Steve Kirk



From chemistry-request@ccl.net Wed Sep  3 12:01:09 2003
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From: Ian Hovell <HOVELL-.at.-cetem.gov.br>
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Subject: CCL: Optimising propylbenzene
Date: Wed, 3 Sep 2003 13:03:48 -0300 
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Dear CCLers,
I have recently been trying to optimise propylbenzene at the B3LYP DFT level
using a 6-31+g(d) basis set. I am using the tight options and an ultrafine
grid in the G98w job route. This works great. But when I include the keyword
option Freq=hindered the job fails claiming a problem in the number of
degrees of freedom (DOF). On inspection on the coordinates of the benzene
ring it can been seen that the C where the propyl group is attached is out
of plane. And thus causing the problem I have with the DOF. I have tried
manually correcting the coordinates and repeating the job but it reverts to
the failing state. Can anyone shed some light on this problem? What do I
need to do to to overcome this problem. I could simply remove the keyword
option "hindered" but this would affect the absolute entropy value which I
am looking for.

TIA
Ian 

Ian Hovell - Ph.D. 
NUCLEO DE MODELAGEM MOLECULAR-NMM 
Centro de Tecnologia Mineral - CETEM 
Ministerio da Cijncia e da Tecnologia- MCT 
Avenida Ipj, No 900 - Cidade Universitaria 
Ilha do Fundco Rio de Janeiro RJ Brasil 
CEP 21941-590 
tel 00 55 (xx) 3865 7344 ou 3865 - 7216 
Fax 00 55 (xx) 22602837 ou 2290-4286 
e-mail hovell-.at.-cetem.gov.br 




From chemistry-request@ccl.net Wed Sep  3 12:48:33 2003
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Message-ID: <3F335BC000012978^at^hawk.dcu.ie>
From: "Noel O'Boyle" <noel.oboyle2^at^mail.dcu.ie>
Subject: SCF convergence criteria
To: chemistry^at^ccl.net
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Hello all,
This is a Gaussian 03 question.

Does anybody know or understand why the default SCF convergence criteria
for single point calculations is looser than the default for geometry optimisations?

I would have expected them either to be the same for both (for consistency)
or the opposite way around (since you can afford to spend more time on a
single point convergence).

In short, if you geometry optimise a structure, surely you should use SCF=Tight
if you do a subsequent single point energy calculation. (Of course, you
can avoid this question if you use Guess=Read.)

Thanks,
Noel O'Boyle




From chemistry-request@ccl.net Wed Sep  3 15:49:21 2003
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Subject: CCl: RE: SCF convergence criteria
Date: Wed, 3 Sep 2003 21:49:09 +0200
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From: "Dillen Jan <jlmd*at*sun.ac.za>" <JLMD*at*sun.ac.za>
To: "Noel O'Boyle" <noel.oboyle2*at*mail.dcu.ie>
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Noel,

If you are interested in the energy,
your just want 1 number with reasonable
accuracy.

If your want to optimise the geometry,
you need 1st derivatives of the energy
w.r.t. the coordinates, in other words
the change of the energy relative to a 
(very) small change in those coordinates.
Hence you need that energy to be calculated
more accurately because otherwise that
relative change may be lost "in the noise".

Although this explanation implicitly
refers to numerical derivatives, the same
argument holds for analytical ones.

Groeten
Jan


> -----Original Message-----
> From: Noel O'Boyle [mailto:noel.oboyle2*at*mail.dcu.ie]
> Sent: 03 September 2003 18:48
> To: chemistry*at*ccl.net
> Subject: CCL:SCF convergence criteria
> 
> 
> Hello all,
> This is a Gaussian 03 question.
> 
> Does anybody know or understand why the default SCF 
> convergence criteria
> for single point calculations is looser than the default for 
> geometry optimisations?
> 
> I would have expected them either to be the same for both 
> (for consistency)
> or the opposite way around (since you can afford to spend 
> more time on a
> single point convergence).
> 
> In short, if you geometry optimise a structure, surely you 
> should use SCF=Tight
> if you do a subsequent single point energy calculation. (Of 
> course, you
> can avoid this question if you use Guess=Read.)
> 
> Thanks,
> Noel O'Boyle
> 
> 
> 
> 
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