Synthesis and Reactivity of Stretched-Dihydrogen−Ruthenium Complexes. Unexpected Formation of a Vinylidene Ligand

Abstract

Reaction of the bis(dihydrogen) complex RuH2(H2)2(PCy3)2 with pyridine and quinoline ligands having hydroxy and amino substituents, LXH leads to the formation of the new stretched-dihydrogen complexes RuH(H2)(LX)(PCy3)2. In the presence of an excess of triethylvinylsilane, the hydrido vinylidene complexes RuH(CC(H)SiEt3)(LX)(PCy3)2 are obtained.