I'm working on 5 atom molecules that are C2v, of the type MX2Y2 like CH2F2 on Hondo v8.2. My problem is that I'm not getting full resonable force constants. To save on band width, I won't go into full detail here, but if you think you can help me, please email me, and I'll send a full description of the problem and what I have done. Thanks in advance, Ron Peterson pa144188 \\at// utkvm1 (bitnet) ronp \\at// neon.chem.utk.edu (internet)