of the substrates. By the stoichiometric reaction of N-1-(4-methylphenyl)ethylidene-4-methylbenzylamine with RuH2(CO)(PPh3)3 in the presence of three equivalents of vinylsilane, a novel ruthenium bismetallacylclic complex with two ruthenium-carbonbonds was isolated. This (C,N,C)-bismetallacycle complex was converted to the alkenylated complex by the reaction with two equiv. of vinylsilane. These observations