Electrochemical and Chemical Oxidation of Seven-Coordinate Group 5 Complexes

A. M. Bond, J. W. Bixler, E. Mocellin, S. Datta, E. J. James, S. S. Wreford

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Abstract

Studies on a range of seven-coordinate tantalum(II) and niobium(II) complexes and other tantalum(lll) and tantalum(IV) complexes illustrate a very general observation that 18-electron transition-metal organometallic complexes containing bidentate phosphorus ligands, regardless of geometry, oxidation state, or element, can usually be reversibly oxidized via electrochemical techniques to producerelatively stable compounds having 17-electron configurations. The ability of bidentate phosphorus ligands to promote the oxidation of organometallic species to 17-electron systems in, formally, unusual oxidation states is considered in terms of an internal disproportionation reaction delocalizing electron density onto the phosphorus orbitals.

Original languageEnglish
Pages (from-to)1760-1765
Number of pages6
JournalInorganic Chemistry
Volume19
Issue number6
DOIs
Publication statusPublished - 1 Jan 1980
Externally publishedYes

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