Os3(CO)10(MeCN)2 reacts at room temperature in MeCN or toluene with R-Pyca† to yield two isomers of Os3(CO)10(R-Pyca) that differ in the bonding of the R-Pyca ligand to the Os3(CO)10 unit. In all cases Os3(CO)10(R-Pyca(4e)) (isomer A; 4a: R = c-Pr, 4b: R = i-Pr, 4c: R = neo-Pent, 4d: R = t-Bu), containing a chelating 4e donating R-Pyca ligand and three OsS bonds, could be isolated. In the case of R
Os 3(CO)10(MeCN)2在室温下在MeCN或
甲苯中与R-Pyca†反应,生成Os 3(CO)10(R-Pyca)的两种异构体,它们的R-Pyca
配体键合不同到Os 3(CO)10单元。在所有情况下Os 3(CO)10(R-Pyca(4e))(异构体A; 4a:R = c-Pr,4b:R = i-Pr,4c:R = neo-Pent,4d:R = t -Bu),其中含有螯合的4e供体R-Pyca
配体和三个OsS键,可以分离出来。在R = c-Pr和R = i-Pr的情况下Os 3(CO)10(R-Pyca(6e))(异构体B; 5a:R = c-Pr,5b:R = i-Pr),其中仅存在两个OsS键,并且R-Pyca
配体作为6e供体
配体键合桥接两个未键合的Os原子,可以作为次要产物分离出来。