STABILIZATION OF UNUSUAL SUBSTRATE COORDINATION MODES IN DINUCLEAR MACROCYCLIC COMPLEXES
Author(s): Vasile Lozan
Field: Inorganic and coordination chemistry
Type: Review
Issue: 2010 Volume 5, no.1
Pages: 24-35
Keywords: coordination chemistry, borohydride, hexasulphide, molybdate, amino-thiophenolate ligands.
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DOI: dx.doi.org/10.19261/cjm.2010.05(1).02
Graphical Abstract: The steric protection offered by the macrobinucleating hexaazaditiophenolate

ligand (L) allows for the preparation of the first stable dinuclear nickel(II) borohydride bridged complex, which reacts rapidly with elemental sulphur producing a tetranuclear nickel(II) complex [{(L)Ni
2}2(μ-S
6)]
2+ bearing a helical μ
4-hexa- sulfide ligand. The [(L)Co
II 2]
2+ fragment have been able to trap a monomethyl orthomolybdate in the binding pocket. Unusual coordination modes of substrate in dinuclear macrocyclic compounds was demonstrated.
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