interconvert in solution. These result from hydride addition to the β-carbon of the µ-vinyl, but addition to the α-carbon is apparent in the low-yield co-formation of the terminal ethylene complex [Ru2(CO)(µ-CO)2(C2H4)(η-C5H5)2] from the cation [Ru2(CO)2(µ-CO)(µ-CHCH2)(η-C5H5)2]+. Addition of sodium tetrahydroborate to [Ru2(CO)(µ-CO)µ-C(H)(O)C2Me2}(η-C5H5)2]+ provides the complex [Ru2(CO)(µ-CO)µ-C(Me)C(Me)CH2}(η-C5H5)2]
配合物的质子化[M 2(CO)(μ-CO)μ-C(O)C 2 - [R 2 }(η-C 5 H ^ 5)2 ] [M = Fe或Ru中 R 2 = H 2,Ph 2,H(Me)或H(Ph)]与HBF 4 ·OEt 2导致
碳-
碳键快速裂解并形成µ-
乙烯基阳离子[M 2(CO)2( μ-CO)μ-C(R)C(H)R}(η-C 5 H ^ 5)2 ] +,含有顺式的结构- [R基团。添加HBF 4 ·OEt2到的[Ru 2(CO)(μ-CO)μ-C(O)C 2我2 }(η-C 5 H ^ 5) 2 ]产生阳离子的[Ru 2(CO)(μ-CO)( μ-C(H)(O)C 2我2 }(η-C 5 H ^ 5) 2 ] +,其缓慢isomerises到的[Ru 2(CO) 2(μ-CO)μ-C(Me)的C(H)Me}(η-C 5 H ^ 5) 2 ] +。该μ
乙烯基的阳离子存在于溶液中作为同分