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Simple general method of generating non-oxo, non-amavadine model octacoordinated vanadium(IV) complexes of some tetradentate ONNO chelating ligands from various oxovanadium(IV/V) compounds and structural characterization of one of them

Sutradhar, M., Mukherjee, G., Drew, M.G.B. and Ghosh, S. (2007) Simple general method of generating non-oxo, non-amavadine model octacoordinated vanadium(IV) complexes of some tetradentate ONNO chelating ligands from various oxovanadium(IV/V) compounds and structural characterization of one of them. Inorganic Chemistry, 46 (12). pp. 5069-5075. ISSN 0020-1669

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To link to this item DOI: 10.1021/ic062242r

Abstract/Summary

A simple general route of obtaining very stable octacoordinated non-oxovanadium( IV) complexes of the general formula VL2 (where H2L is a tetradentate ONNO donor) is presented. Six such complexes (1-6) are adequately characterized by elemental analysis, mass spectrometry, and various spectroscopic techniques. One of these compounds (1) has been structurally characterized. The molecule has crystallographic 4 symmetry and has a dodecahedral structure existing in a tetragonal space group P4n2. The non-oxo character and VL2 stoichiometry for all of the complexes are established from analytical and mass spectrometric data. In addition, the non-oxo character is clearly indicated by the complete absence of the strong nu(v=o) band in the 925-1025 cm(-1) region, which is a signature of all oxovanadium species. The complexes are quite stable in open air in the solid state and in solution, a phenomenon rarely observed in non-oxovanadium(IV) or bare vanadium(IV) complexes.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:11641
Uncontrolled Keywords:ELECTRON-PARAMAGNETIC-RES, EARLY TRANSITION-METALS, SELENIUM DONOR, LIGANDS, 8-COORDINATED COMPLEXES, AMANITA-MUSCARIA, AQUEOUS-SOLUTION, SALEN COMPLEXES, SULFUR, CHEMISTRY, CRYSTAL

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