From d3g359@fido.pnl.gov  Wed Jul 17 13:14:39 1996
Received: from pnl.gov  for d3g359@fido.pnl.gov
	by www.ccl.net (8.7.5/950822.1) id NAA17062; Wed, 17 Jul 1996 13:05:53 -0400 (EDT)
Received: from fido.pnl.gov by pnl.gov (PMDF V4.3-13 #6012)
 id <01I76BYK4ZAO8Y9P4K@pnl.gov>; Wed, 17 Jul 1996 10:05:29 -0700 (PDT)
Received: by fido.pnl.gov (951211.SGI.8.6.12.PATCH1042/951211.SGI.AUTO)
 for CHEMISTRY@www.ccl.net id KAA11580; Wed, 17 Jul 1996 10:02:50 -0700
Date: Wed, 17 Jul 1996 10:02:50 -0700
From: d3g359@fido.pnl.gov (John Nicholas)
Subject: SCI-PCM Model in G94
To: CHEMISTRY@www.ccl.net
Message-id: <199607171702.KAA11580@fido.pnl.gov>
Content-transfer-encoding: 7BIT



I have been having problems getting geometries (and in some cases SCF's)
to converge when using the scrf=scipcm option in G94. The higher
the dielectric constant, the more problem there seems to be. Does
anyone have any suggestions on how this problem might be cured? I
have already started with prior hessians and the molecules are simple,
so the problem seems to be the inclusion of solvent effects.

Thanks in advance, John


------------------------------------------------------------------------------
  John Nicholas                                 Office: (509) 375-6559
  Senior Research Scientist                        FAX: (509) 375-6631
  Environmental Molecular Sciences Laboratory     
  Pacific Northwest National Laboratory
  Mailstop K1-96
  Richland, WA 99352
------------------------------------------------------------------------------

