Synthesis and Reactivities of Amido-Bridged Dinuclear Ruthenium Complexes

摘要

[Cp*RuCl]_4(Cp*=eta~5-C_5Me_5)reacts with 2 equiv of dilithium 1,2-phenylenediamide in THF to afford a 3:1 mixture of the dinuclear ruthenium 1,2-phenylenediamido complexes [(Cp*Ru)(eta~2:eta~4-mu_2-l,2-(NH)_2C_6H_4)RuCp*](5a)and [Cp*Ru(eta~2:eta~6-mu_2-l,2-(NH)_2C_6H_4)RuCp*](5b).Complex 5a is cleanly converted to 5b in refluxing acetonitrile.Treatment of 5b with 1 equiv of CO yields the carbonyl adduct [Cp*Ru(CO)(eta~2:eta~6-mu_2-l,2-(NH)_2C_6H_4)RuCp*](6),which further reacts with excess CO to form the amido/carbamoyl/carbonyl complex [Cp*Ru(CO)(mu_2-(CONH)C_6H_4NH)RuCp*](7)