Magnetic perturbation of singlet-triplet transitions. Part 7.—Simultaneous electronic transitions

Abstract

Simultaneous electronic transitions have been observed for solutions of 1-chloroanthracene and other aromatic hydrocarbons in the presence of oxygen under pressure. In these, the organic molecule is excited to its lowest triplet state, and the oxygen undergoes a ¹Δ_g–³Σ^– _g transition. The simultaneous transitions are much more intense than the perturbed singlet-triplet transitions.