Isocyanide ligands in Tp'(CO)2IMo(CNR) complexes [Tp' = hydridotris(pyrazolyl)borate] as precursors to aminocarbyne, .eta.2-iminoacyl, and .eta.2-vinyl ligands

Abstract

A mixture of molybdenum aminocarbyne, η 2 -iminoacyl, and η 2 -acyl complexes, Tp'(CO) 2 Mo≡CN-(Me)(Bu t ), Tp'(CO) 2 Mo(η 2 -C(NBu t )Me), and Tp'(CO)(Bu t NC)Mo(η 2 -C(O)Me), has been prepared via the addition of MeI to the anionic tert-butyl isocyanide complex [Na][Tp'(CO) 2 Mo(CNBu t )]. Addition of MeI to the analogous anionic methyl or phenyl isocyanide complex yields only aminocarbyne complexes