【摘要】 合成了系列六齿配位模式畸变八面体的8-羟基喹啉锰配合物。通过其在丙酮与水体系中,过氧化氢作氧化剂进行苯乙烯的环氧化反应,考察了8-羟基喹啉类Mn配合物的催化性能。结果显示,取代基对催化剂活性的影响显著,吸电子基团不利于催化反应,供电子基团对催化有明显的加强作用,其影响规律为:-NO₂<-H<-X<-CH₂-O-CR。卤素取代基对催化剂有稳定作用,能提高其催化活性。在五位取代基相同、七位不同的情况下按照-H<-Cl<-Br<-I逐渐提高。更多还原

【Abstract】 Several 8-quinoliolato manganese (Q3Mn?) hexadentate complexes was synthesized and their catalytic behaviors were investigated for epoxidation of styrene with aqueous hydrogen peroxide (H2O2) in acetone-water medium. The results indicated that the substituent groups had much influence on the catalytic activity; the electron withdrawing groups inhibited the catalytic activity, while the electron donor groups promoted the catalytic activity, with degree of the influence in the following order: -NO2<-H <-X < -CH2-O-CR. The halogen substituting groups enhanced and stabilized the catalytic activity in the following order; -H <-Cl <-Br <-I.更多还原