I am calling the
frequency() method in order to get the normal modes and their frequencies for a certain optimized geometry. When I return the wavefunction, the return value for
wfn.frequencies() provides values that match that of the printed output, but
None. Is there any way to get the normal modes as some sort of data representation directly in the Python interface, or is the only way to parse the output or molden file?
Another note, the
normalmodes() method exists in the manual for
1.1 (http://psicode.org/psi4manual/1.1/psi4api.html#psi4.core.Wavefunction) but not the one for