Hydrosilation catalysis via silylmanganese carbonyl complexes: thermal vs. photochemical activation
作者:Sandra L. Pratt、Robert A. Faltynek
DOI:10.1016/0022-328x(83)89515-1
日期:1983.11
Thermal and photochemical activation of Ph3SiMn(CO)5 leads to different catalyst systems, both of which promote the addition of organosilicon hydrides to terminal alkenes. In the thermal case, major catalytic activity is due to triphenylsilyl radicals generated from SiMn bond homolysis. Upon photolysis, however, there is no evidence of SiMn homolysis during catalyst activation. These studies represent
Ph 3 SiMn(CO)5的热活化和光化学活化导致形成不同的催化剂体系,两者均促进有机硅氢化物向末端烯烃的加成。在热情况下,主要的催化活性归因于SiMn键均裂产生的三苯基甲硅烷基。然而,光解后,没有证据表明催化剂活化过程中SiMn发生了均相。这些研究代表了相同催化剂前体在光化学与热活化后的不同行为的第一个明确定义的例子。