return to home page

III.F.4. (XVIII.D.1.)

Negative orbital occupation numbers

A negative orbital occupation number indicates that the electronic ground state may not be well represented by a single electronic configuration.

Results for HCS (Thioformyl radical)

The following table lists the minimum orbital occupation numbers


Methods with standard basis sets
aug-cc-pVTZ
Moller Plesset perturbation MP2FC -0.27998

The following table lists the T1 diagnostic


Methods with standard basis sets