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Sorry, my working compute doesn't support Chinese, I have to put the comments in English.
First, I don't suggest start from CASSCF. The best way is always to read the orbitals from a previous calculation, like DFT, select the important orbitals and put them in the CAS.
Second, your understanding is correct, but one notice. Root energy here is the based on averaged state orbital. It is close to the real value, not exactly. If you just want the energy of S0 and T1, don't put too many states. The more you put, the less accurate it is. The best way to do this is via Molcas or Molpro. |
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