proportions of each product depended on the time of reaction, longer times favouring more highly hydrided complexes. The new hydride complexes were characterised with the help of n.m.r. spectroscopy including 1H(187Os) reverse INEPT two-dimensional n.m.r. spectra. The diacetate (8a) underwent hydrolysis to give [(p-MeC6H4CHMe2)2Os2(µ-OH)2(µ-O2CMe)]+ and methanolysis to give [(p-MeC6H4CHMe2)2Os2-(µ-OMe)3]+
[(p -MeC 6 H 4 CHMe 2)2 Os 2(µ-H)(µ-Cl)Cl 2 ]是由
丙烷-2-醇与任一[(p -MeC 6 H 4 CHMe 2)反应形成的2 Os 2 Cl 4 ](在KPF 6或HPF 6作为催化剂的情况下)或[(p -MeC 6 H 4 CHMe 2)2 Os 2(μ-Cl)3 ] [PF 6 ]。二氢
三环[[p -MeC 6 H 4 CHMe 2)2 Os 2(µ-H)3 ] +(5)和四核四
氢化物[(p -MeC 6 H 4 CHMe 2)4 Os 4(µ-H)4 ] 2+由[(p -MeC 6 H 4 CHMe 2)2 Os 2(µ-OH)3 ] +(4)与丙-2-醇的反应,还通过(4)与
甲醛的反应制备了三
氢化物(5)。
氯乙酸盐[(p -MeC 6 H 4 CHMe 2)Os(O 2 CMe)Cl]得到的混合物[[ p -MeC 6 H 4 CHMe 2)2