CCL:G: NBO $DEL calculation error
- From: L E Johnson <lejohn07]|[louisville.edu>
- Subject: CCL:G: NBO $DEL calculation error
- Date: Wed, 11 Feb 2009 15:17:58 -0500
Sent to CCL by: L E Johnson [lejohn07-#-louisville.edu]
Hi Robert,
The NBO website says there is a know problem with $DEL calculations in G03.
Here's the text from the website:
An error in the Gaussian-03 program (DFT XC coding) has been found to seriously
affect $DEL energetic analysis using density functionals. Gaussian-03 users
should therefore include
IOp(5/48=10000)
on the route card whenever the POP=NBODEL option is used. The problem applies to
both G03/NBO3 or upgraded G03/NBO5G versions of G03, but not to G98 and earlier
Gaussian versions.
Thanks to Peter Limacher (ETH-Zurich) for first identifying this problem, and to
Mike Frisch (Gaussian, Inc.) for the IOp solution. The problem will be repaired
in the next minor revision of G03
The website is: http://www.chem.wisc.edu/~nbo5/G03_DEL.HTM
Try the IOp to see if this helps your problem.
Lucius
----------------------------------------
Lucius Johnson
Department of Chemistry
University of Louisville
Louisville, Kentucky 40292
(502) 852-0192
lejohn07]^[louisville.edu
>>> "Robert V. Kolakowski rkolakow|-|rci.rutgers.edu"
<owner-chemistry]^[ccl.net> 02/11/09 12:50 PM >>>
Sent to CCL by: "Robert V. Kolakowski" [rkolakow||rci.rutgers.edu]
Hello,
I have been trying to run an NBO orbital deletion calculation using G03 and
seem to have hit a wall when optimizing larger structures.
************************************************
** ERROR IN INITNF. NUMBER OF VARIABLES ( 57) **
** INCORRECT (SHOULD BE BETWEEN 1 AND 50) **
************************************************
Does the default algorithm limit you to 50 variables and if so is there a way to
override this?
Any help would be much appreciated.
Cheers,
Robert V. Kolakowski
Department of Chemistry
Rutgers, The State University of New Jersey
610 Taylor Road, Piscataway, NJ 08854-8087
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