Spin of excited states from TDDFT


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You are doing a spin-unrestricted DFT/TDDFT calculation; therefore, the keywords singlet/triplet (nosinglet/notriplet) have no meaning and are ignored by the code (hence the same result no matter which you specify). Those keywords only have meaning for a spin-restricted calculation on a closed-shell ground state.

Your DFT calculation is suffering from pretty severe spin contamination and your TDDFT inherits the same spin contamination. If you can reduce the spin contamination in the ground state, then you will likely (but no guarantee) get better excited states as far as the spin state is concerned.