NO Insertion Reaction of Ethyl(nitrosyl)ruthenium Complex Having Hydrotris(pyrazolyl)borate and Conversion to Acetaldoxime and Acetonitrile Complexes

Ethyl(nitrosyl)ruthenium [TpRuCl(Et)(NO)] (2) was isolated from the reaction of [TpRuCl2(NO)] (1) with LiBHEt3. NO insertion of 2 was observed from heating a solution of 2. In the presence of PPh3, nitrosoethane complex [TpRuCl{N(=O)Et}(PPh3)] (3) was isolated, but the absence of PPh3 led to nitrosoethane-bridged dimer [(TpRuCl)2{μ-N(=O)Et}2] (6). Also, in complex 3, conversion of the nitrosoethane moiety to acetaldoxime and acetonitrile was observed.