OCTAHEDRAL CLUSTERS WITH MIXED INNER LIGAND ENVIRONMENT: SELF–ASSEMBLY, MODIFICATION AND ISOMERISM
N.G. Naumov1,2, K.A. Brylev1,2, Y.V. Mironov1,2, S. Cordier3, V.E. Fedorov1,2
1Institute of Inorganic Chemistry AV Nikolaev SB RAS, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
3UMR "Sciences Chimiques de Rennes", Rennes Cedex, France
Keywords: octahedral cluster, ligand, structure, isomerism, substitution, niobium, molybdenum, rhenium
Abstract
Octahedral cluster complexes of transition metals are associated with halogen or chalcogen inner ligands to form edge-bridged {M6(μ2X)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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