Synthesis, Structure, and Properties of a Dibenzo-ortho-terphenoquinone. The First o-Terphenoquinone Derivative
A dibenzo-ortho-terphenoquinone derivative, the first o-terquinone derivative, is largely deviated from coplanarity, is in a slight equilibrium with its diradical form, displays an easy rotation of the exocyclic double bonds, and shows photoresponsive switching property traceable by ESR spectroscopy.