Some Organoperoxo Complexes of Antimony, Niobium and Tantalum and their Oxidation Properties

M. Tofazzal and H. Tarafder

Department of Chemistry, University Putra Malaysia, UPM Serdang, Selangor - 43400 Malaysia.

ABSTRACT:

Several novel organoperoxo complexes of Nb(V), Ta(V) and Sb(V) have been synthesized and characterized. The complexes have the compositions IM{O2}2L Cl] and [M(O2)2L'] [L=monodenate and bidentate, neutral ligand , L'=bidentate, uninegative ligand]. These complexes are very reactive to both organic and inorganic substrates. Niobium and tantalum complexes were found to oxidize phosphines and arsinaa to their oxides. These also oxidize olefins to epoxides under stoichiometric conditions while under catalytic conditions, ring opening of the epoxides occur producing a-hydroxyketone whan the substrate Is trans-siilbene- The antimony complexes are decidely inert towards oxidation.

KEYWORDS:

Synthesized; Bidentate; Phosphines; oxides; Stoichiometric

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Copy the following to cite this article: Tofazzal M,Tarafder H. Some Organoperoxo Complexes of Antimony, Niobium and Tantalum and their Oxidation Properties. Orient J Chem 1999;15(2).

Copy the following to cite this URL: Tofazzal M,Tarafder H. Some Organoperoxo Complexes of Antimony, Niobium and Tantalum and their Oxidation Properties. Orient J Chem 1999;15(2). Available from:http://www.orientjchem.org/?p=36958