Cyclopentadienylidene. A matrix isolation study exploiting photolysis with unpolarized and plane-polarized light
作者:Mark S. Baird、Ian R. Dunkin、Nigel Hacker、Martyn Poliakoff、James J. Turner
DOI:10.1021/ja00407a040
日期:1981.8
Diazocyclopentadiene (1) was photolyzed in N(2), CO, and other low-temperature matrices. The resulting carbene, cyclopentadienylidene (2), was characterized by its UV and IR spectra, and its thermal dimerization and reaction with CO were observed. Photolysis of 1 with plane-polarized light gave matrices exhibiting linear dichroism. Comparison of dichroic IR and UV spectra revealed that the photolysis
重氮环戊二烯 (1) 在 N(2)、CO 和其他低温基质中被光解。所得卡宾,环戊二烯基 (2),通过其紫外和红外光谱表征,并观察到其热二聚和与 CO 的反应。用平面偏振光对 1 进行光解得到表现出线性二色性的基质。二向色红外和紫外光谱的比较表明,光解通过重氮化合物的激发 A(l) 状态进行。CO 基质中相应的乙烯酮 (4) 的平面极化照射导致 4 分子的光重新取向而没有显着损失。