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).
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 02, 1984
- Accession Number
- ADA141067
Entities
People
- E. M. Kober
- J. C. Huffman
- K. Folting
- M. H. Chisholm
Organizations
- Indiana University