Observation of a Novel Low-Lying Excited State in Zinc Complexes

摘要

A novel low-lying excited state(s) has been observed from emission studies of complexes of the type M(BS)2(S-phen) (M = Zn(II), Cd(II); BS = benzene thiol; s-phen = substituted 1,10-phenanthroline) at 77 K. The state is tentatively assigned to a charge-transfer configuration in which the thiol donates charge through the closed d-shell to the N-heterocyclic state geometry with respect to the ground state. The state decays on the order of microseconds, but its spin signature has not yet been determined.