Reaction of Cp*Os(CO)2Cl with [Et3Si][BArF4] under hydrogen gas affords the cationic hydrogen complex [Cp*Os(CO)2(H2)][BArF4] (1) (Cp* = C5Me5; ArF = C6F5). When this reaction is carried out with HD gas, complex 1-d1 results, with JHD = 24.5 Hz. When solutions of complex 1 are monitored by 1H NMR spectroscopy over several days, the gradual formation of a trans dihydride species is observed. Similarly
Cp * Os(CO)2 Cl与[Et 3 Si] [BAr F 4 ]在
氢气下反应,得到阳离子氢络合物[Cp * Os(CO)2(H 2)] [BAr F 4 ](1) (Cp * = C 5 Me 5; Ar F= C 6 F 5)。当用HD气体进行该反应时,生成的络合物1 - d 1为J HD = 24.5 Hz。当复合物1的溶液由1监视时在几天的1 H NMR光谱中,观察到反式二
氢化物物质的逐渐形成。同样,CpOs(dppm)Br与Na [BAr F * 4 ](Ar F * = 3,5-(CF 3)2 C 6 H 3)在
氢气下反应,得到阳离子二
氢化物配合物[CpOs(dppm)H 2 ] [BAr F * 4 ](2)。在295 K时,复合物2以顺式和反式异构体的10:1混合物形式存在。顺式的1 H NMR谱由于氢原子的快速交换,
氢化物区域中的H 2 O 3形式表现出三重态,J HP