benzene–benzonitrile solutions of 3,4,5,6-tetraphenyl-substituted 1,2-digermacyclohexa-3,5-dienes and related compounds in the presence of C60 afforded the corresponding ring-contracted products, namely 1-germacyclopenta-2,4-dienes, with the extrusion of germylene and ring-expanded oxadigerma compounds, namely 1-oxa-2,7-digermacyclohepta-3,5-dienes. The laser flash photolysis of a benzene–benzonitrile
3,4,5,6-四苯基取代的 1,2-digermacyclohexa-3,5-diene 和相关化合物的苯-
苄腈溶液在 C60 存在下的辐照得到相应的环缩产物,即 1-germacyclopenta -2,4-二烯,随着
锗烯和扩环oxadigerma化合物的挤出,即1-oxa-2,7-digermacyclohepta-3,5-diene。在 C60 存在下,1,2-二聚环己-3,5-二烯的苯-
苄腈溶液的激光闪光光解表明 C60 三重态 (TC60*) 的瞬态吸收带立即出现在 730 nm。随着TC60*的衰减,C60•-自由基阴离子的吸收带出现在1060 nm处,表明电子从1,2-二聚环己-3,5-二烯转移到TC60*。