Abstract

Octahedral cluster complexes of transition metals are associated with halogen or chalcogen inner ligands to form edge-bridged {M6(μ2-X)12} or face-capped {M6(μ3-X)8} cluster cores. The partial exchange of X atoms leading to mixed inner ligand environment invokes a distortion of metallic cluster, reduction of symmetry as well as an isomerism of the cluster cores. This review summarizes preparation methods of mixed ligand cluster complexes with the general formulas [{M6(μ2-X)12}L6] n or [{M6(μ3-X)8}L6] n and their structural features.

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