Photoinduced selective n.m.r. line broadening effects in polycyclic aromatic dianions. N.m.r. identification of radical monoanions as primary photoproducts
Abstract
Polycyclic dianions,e.g. dibenzo[a,c]tetracene, undergo an electron photoejection process and form radical anions which induce n.m.r. line broadening by electron exchange with the paramagnetic photointermediate.