Posted by Roland Lindh on February 08, 2007 at 10:19:57:
In Reply to: frequency calculation using CASPT2 ??? posted by Joonghan Kim on February 08, 2007 at 03:05:09:
Hi,
it is not possible to compute analytic CASPT2 frequencies in MOLCAS. However, using the Slapaf module in a geometry-optimization-like procedure you can do it numerically.
Take care,
-roland