Crystal Structure and Photochemical Properties of r-1,c-2,t-3,t-4-1,3-bis(4-biphenyl)-2,4-di(4-pyridyl)cyclobutane
Zhang Wen-Qin, Zhang Zhi-Ming, Zheng Yan, Wang Shu-Li, Zhao Shu-Na
Acta Phys. -Chim. Sin. . 2000, (03): 207 -213 .  DOI: 10.3866/PKU.WHXB20000304