Some complexes of all-carbon ligands and related chemistry

Recent developments in the chemistry of all-carbon ligands and related molecules include the synthesis and reactions of mono-, hi-and poly-nuclear complexes containing C-2, C-4 and C-8 ligands, as well as of substituted derivatives of allenylidene (:C=C=CH2) and butatrienylidene (:C=C=C=CH2) ligands. The work of the Adelaide group on the pentanuclear ruthenium cluster carbonyl containing a reactive C-2 ligand and on the synthesis, chemistry and electrochemistry of a variety of complexes containing C-4 and C-8 ligands, is described. (C) 1997 Elsevier Science S.A.