Photosensitive 1:1 Adduct between Bis(1,2-diphenyl-1,2-ethylenedithiolato)nickel(0) and Quadricyclane

Bis(1,2-diphenyl-1,2-ethylenedithiolato)nickel(0) (1a) reacts with quadricyclane (Q) to give a 1:1 adduct which has the same structure as that of the adduct between 1a and norbornadiene (NBD). Q reacts with 1a much faster than NBD. The adduct is thermally stable but photosensitive to dissociate into 1a and NBD.