Isolation and crystal structures of two singlet bis(triarylamine) dications with nonquinoidal geometries.
Zheng S, Barlow S, Risko C, Kinnibrugh TL, Khrustalev VN, Jones SC, Antipin MY, Tucker NM, Timofeeva TV, Coropceanu V, Brédas JL, Marder SR. Isolation and crystal structures of two singlet bis(triarylamine) dications with nonquinoidal geometries. J Am Chem Soc. 2006 Feb 15; 128(6):1812-7.