Recent advances in the field of multicarbene and multimetal carbene complexes of the Fischer-type

Abstract

This review article covers the development of Fischer carbene complexes since the year 2000, with specific focus on carbene complexes bearing metal-containing fragments as substituents, as well as multicarbene systems. The role of the metal-containing substituents on the character and reactivity of such complexes are discussed. In addition, larger systems containing more than one carbene ligand are also covered (rodlike biscarbenes, chelates, macrosystems, etc.) in terms of the synthesis, reactivity and structural aspects.