The synthesis, structure and chemistry of tri- and tetranuclear cluster complexes with face-capping C 7 H 7 and C 8 H 8 ligands are described. Synthesis of such complexes is based on mutual steric hindrance of two of the large cyclopolyenes, which cannot both occupy apical coordination sites in a M 4 (M=Co, Rh) cluster. Reactions where the facial coordination of the cyclopolyene is retained include substitution of apical ligands and redox reactions with and without degradation of the metal cluster. A description of the characteristic features of the facial (μ 3 -) bonding mode of C 7 H 7 and C 8 H 8 is given, based on numerous crystal structures.