H. Wadepohl et S. Gebert, (CYCLOPENTADIENYL) METAL CLUSTER COMPLEXES OF THE GROUP-9 TRANSITION-METALS, Coordination chemistry reviews, 143, 1995, pp. 535-609
Cluster complexes with metal frameworks built from [(C(5)R(5))(d(9)-M)
] units are reviewed (d(9)-M = Co, Rh, Ir). The range of additional li
gands which may be attached to the [(C(5)R(5))M](n) cores includes mai
n group atoms such as H, O, S and Se, small inorganic molecules such a
s CO, CS, NO and NH as well as organic compounds such as isocyanides,
alkynes, alkylidynes, arenes and others.Syntheses, structures and reac
tivities of the known cluster complexes of this type are discussed. Sp
ecial emphasis is given to the relationship of structure and chemical
properties to the valence electron count in systems of similar composi
tion.