From chemistry-request@ccl.net Fri Sep 6 10:44:58 1991 Date: Fri, 6 Sep 91 04:57:15 EDT From: m10!frisch@uunet.UU.NET (Michael Frisch) Subject: Re: CHELPGUNIX To: chemistry@ccl.net Status: R We have recently compiled CHELPG to run on our SGI platforms and discovered that we get a different answer for the water test job than the one provided in the doc file. I believe this is a problem with Gaussian 90 on our boxes not CHELPG as we have always had problems with the STO-3G basis set which remain unresolved. We have been able to reproduce data from the article (J. Comput. Chem., 11, 361-373 (1990)) refernced in the doc file. I would appreciate it if anyone who has run CHELPG with a haigher basis set than STO-3G on a relatively small molecule would let me have your Gausian and CHELPG output files so I can make an exact comparison. Also I would appreciate it if anyone could point out any further discussion on choosing Van der Waal's exclusion radii for larger atoms ( second row and transition metals ) for use in CHELPG. Jim Schmidt University of Rochester Pharmacology Dept. jims@duce.medicine.rochester.edu jps In general, Gaussian 90 works fine on the SGI regardless of basis set. Anyone who has specific problems or concerns should report them to moses@gaussian.com. Mike Frisch Gaussian, Inc. ------- From chemistry-request@ccl.net Fri Sep 6 11:44:50 1991 Date: Fri, 06 Sep 91 10:23:22 CDT From: GA0205%SIUCVMB.BITNET@OHSTVMA.ACS.OHIO-STATE.EDU To: chemistry@ccl.net Subject: multireference ci optimization program? Status: R Can anyone tell me whether a multireference CI optimization program is available. I am looking at some systems where single reference CI seems inadequate and I would like to be able to do geometry optimization at the CI level using as references the dominant configurations generated in a MCSCF calculation. From chemistry-request@ccl.net Fri Sep 6 15:17:01 1991 Date: Fri, 6 Sep 91 14:07:38 -0500 From: rbw@msc.edu (Richard Walsh) To: chemistry@ccl.net Subject: DMol 2.1 Status: R Friends, For those of you that have started to use this new release have you: 1. Noticed that the BOHR modifier to the GEOMETRY keyword seems not to work (that is, angstroms are always assumed to be offered in the input file and conversion to bohrs always takes place giving extra-long bond lengths [and optimizations runs] when you actually provided bohrs). 2. Found that frequency calculations only print out the Hessian. You seem to have to then calculate the frequencies yourself. If these features are not part of your 2.1 please let me know. Gratefully, Richard Walsh MSC