From elewars _-at-_)alchemy.chem.utoronto.ca Wed Jul 13 11:53:00 1994 Received: from alchemy.chem.utoronto.ca for elewars -x- at -x- alchemy.chem.utoronto.ca by www.ccl.net (8.6.9/930601.1506) id LAA06477; Wed, 13 Jul 1994 11:27:30 -0400 Received: from localhost (elewars(+ at +)localhost) by alchemy.chem.utoronto.ca (8.6.4/8.6.4) id LAA19672 for chemistry(+ at +)ccl.net; Wed, 13 Jul 1994 11:27:38 -0400 Date: Wed, 13 Jul 1994 11:27:38 -0400 From: "E. Lewars" Message-Id: <199407131527.LAA19672-!at!-alchemy.chem.utoronto.ca> To: chemistry /at\ccl.net Subject: TRANSITION STATE OPTIMIZATION When I tried an MP2/6-31G* TS opt with G92, using as input the HF/6-31G* geom and hessian, the job failed with "wrong number of negative eigenvalues: desired= 1, actual= 0." When I tried again with a slightly different geom whowhose MP2 (not HF) freqs showed one imaginary vibration, corresponding to the desired mode, using this MP2 hessian as input, it still failed ("wrong number of...."). Does anyone have any idea what is going on here, and any suggestions? ===