Organovanadium compound
Organovanadium chemistry is the chemistry of organometallic compounds containing a carbon to vanadium (V) chemical bond. Organovanadium compounds are of some relevance to organic synthesis and to polymer chemistry as reagents and catalysts.
Oxidation states for vanadium are +2, +3, +4 and +5. Low valency vanadium is usually stabilized with carbonyl ligands. Oxo ligands for example in vanadyl ions are common when the valency increases. In most compounds outside the oxidation state of +5, vanadium is paramagnetic, hampering NMR spectroscopy. Typical vanadium precursors are vanadium(III) chloride and its adduct with THF VCl3(THF)3 and vanadium tetrachloride.
Common ligands for vanadium are carbonyl, phosphine and cyclopentadienyl.
Vanadium carbonyl can be prepared from vanadium(II) chloride, vanadium oxytrichloride or vanadium acetylacetonate in reaction with carbon monoxide, pyridine and magnesium or zinc as reducing agent
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