Metallacumulenes: from vinylidenes to metal polycarbides

Metallacumulenes and carbide complexes exhibit diverse structures and modes of reactivity. This review presents an overview of work in the author's research group on vinylidene complexes of group 6 and 8 metals, allenylidene and butatrienylidene complexes of group 8 metals, and metal carbide, bicarbide and tricarbide complexes of group 6, 7 and 8 metals. (C) 2004 Elsevier B.V. All rights reserved.