Seisenbaeva, Gulaim
- Department of Molecular Sciences, Swedish University of Agricultural Sciences
Abstract
Oxoisopropoxide complexes of niobium, Nb6O8((PrO)-Pr-i)(14)((PrOH)-Pr-i)(2) (I), and rhenium, Re4O6((OPr)-Pr-i)(10) (II), were isolated as by-products of anodic oxidation of these metals in (PrOH)-Pr-i in the presence of LiCl as conductive additive. The common feature of both structures consists in the occurrence in their molecules of an M4O16 planar core formed in the formal absence of M-M bonding for I and in the presence of electron-deficient but surprisingly short (Re-Re 2.52-2.54 Angstrom) metal-metal bonds in II. The stability of this core for the oxoalkoxide derivatives of rhenium(V,VI) and niobium(V) and poor stability for those of tantalum(V) are discussed based on the results of quantum-chemical calculations. (C) 2003 Elsevier B.V. All rights reserved.
Keywords
niobium; rhenium; oxoalkoxides; electrochemical synthesis; X-ray single crystal; metal-metal bonds; molecular structure; EHT calculations
Published in
Inorganica Chimica Acta
2004, volume: 357, number: 2, pages: 468-474
SLU Authors
Kessler, Vadim
- Lomonosov Moscow State University
UKÄ Subject classification
Inorganic Chemistry
Materials Chemistry
Publication identifier
- DOI: https://doi.org/10.1016/S0020-1693(03)00499-7
Permanent link to this page (URI)
https://res.slu.se/id/publ/2895