Accession Number : ADA141067

Title :   Reactions of Metal-Metal Multiple Bonds. 14. Synthesis and Characterization of Triangulo-W3 and Mo2W-oxo Capped Alkoxide Clusters. Comproportionation of M-M Triple Bonds, sigma(2)pi(4) and d(o) Metal-oxo Groups: M Triple Bond M + M Triple Bond O Yields M3(micron 3-O).

Descriptive Note : Technical rept.,


Personal Author(s) : Chisholm,M H ; Folting,K ; Huffman,J C ; Kober,E M

PDF Url : ADA141067

Report Date : 02 May 1984

Pagination or Media Count : 32

Abstract : In hydrocarbon solvents W2(O-i-Pr)6 (HNMe 2)2 and WO(0-i-Pr)4 react to give W3O(O-i-Pr)10. Similarly Mo2(O-i-Pr)6 and WO(O-i-Pr)4 yield the mixed metal cluster Mo2WO(O-i-Pr)10 but the reaction between W2(O-i-Pr)6(HNMe2)2 and MoO(O-i-Pr)4 proceeds further to give by oxo group transfer WO(O-i-Pr)4 along with other products. Attempted comproportionations involving Mo2(O-i-Pr)6 and W2(O-i-Pr)6HNMe2)2 with either M(O-i-Pr)5(M = Nb and Ta) or W(NPh)(O-i-Pr)4 and failed to react. The new triangulo oxo capped alkoxides are isomorphous and isostructural with the previously reported Mo3O(O-i-Pr)10 compound. The electronic absorption spectra and electrochemical data are consistent wtih a common electronic structure and a gradation of properties for the replacement of Mo by W. (Author)

Descriptors :   *Metal metal bonds, *Reaction kinetics, *Synthesis(Chemistry), Molecular properties, Tungsten compounds, Molybdenum compounds, Alkoxy radicals, Chemical analysis, Atoms, Clustering, Atomic structure, Hydrocarbons, Solvents, Chemical reactions, Electrons, Absorption spectra, Electrochemistry, Ultraviolet spectroscopy, Visible spectra, Ligands, Oxidation reduction reactions

Subject Categories : Inorganic Chemistry
      Organic Chemistry
      Properties of Metals and Alloys
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE