From chemistry-request-: at :-ccl.net Wed Nov 26 16:47:52 2003 Received: from smtp1.utdallas.edu (smtp1.utdallas.edu [129.110.10.12]) by server.ccl.net (8.12.8/8.12.8) with ESMTP id hAQLlLNL016334 for ; Wed, 26 Nov 2003 16:47:21 -0500 Received: from utdallas.edu (pascal.utdallas.edu [10.110.22.68]) by smtp1.utdallas.edu (Postfix) with ESMTP id 705BC389619 for ; Wed, 26 Nov 2003 15:47:21 -0600 (CST) Sender: wfisher/at/utdallas.edu Message-ID: <3FC51EF8.DB7DA1D5/at/utdallas.edu> Date: Wed, 26 Nov 2003 15:45:28 -0600 From: Wayne Fisher X-Mailer: Mozilla 4.79 [en] (X11; U; HP-UX B.11.11 9000/785) X-Accept-Language: en MIME-Version: 1.0 To: "chemistry/at/ccl.net" Subject: CCL:G03 PCM Error Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Spam-Status: No, hits=-0.1 required=7.0 tests=USER_AGENT_MOZILLA_XM,X_ACCEPT_LANG version=2.55 X-Spam-Checker-Version: SpamAssassin 2.55 (1.174.2.19-2003-05-19-exp) Colleagues, Occasionally when running a G03 pcm calculation on a molecule I get an abnormal termination with an error message like the following. United Atom Topological Model (UA0 parameters set). UA0: Hydrogen 5 has 3 bounds. Keep it explicit at all point on the UA0: potential energy surface to get meaningful results. Can anyone tell me how to fix this problem? How do I keep an atom explicit? Thanks, Wayne Fisher The University of Texas at Dallas