Studies of the 3455-Å Triplet State of s-Triazine

Abstract

We present a confirmation of the assignment of the 28 935-cm^−1 triplet state, 3A1[double-prime], of s-triazine. The high-field Zeeman effect is used to make this assignment which is consistent with the fact the transition is polarized perpendicular to the molecular plane. The optical spectrum at low magnetic fields yields the zero-field splitting D=−0.058±0.024 cm^−1. The sign and magnitude of D is consistent with an npi* state in which one-center spin—spin interaction is a significant feature of the zero-field splitting.

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