Synthesis and X-ray single crystal study of niobium and tantalum oxo-ethoxo-perrhenates, (M4O2)-O-V(OEt)(14)(ReO4)(2)

Abstract

Niobium and tantalum oxo-ethoxo-perrhenates, (M4O2)-O-v(OEt)(14)(ReO4)(2), are easily obtained in high yields via interaction of metal ethoxides, M-v(OEt)(5), with rhenium heptoxide, Re2O7, in hydrocarbon solvents. The complexes have good solubility in hexane and toluene and are stable in solution at room temperature. Their molecular structures are based on a tetranuclear M-4(mu-O)(2)(mu-OR)(4)X-12 core, X = OR, ReO4, composed of two pairs of edge-sharing octahedra joined via two almost linear oxo-bridges containing a rectangular flat M-4-arrangement. The perrhenate ligands are attached in a centrosymmetric manner to the two opposite corners of the rectangle. (c) 2006 Elsevier Ltd. All rights reserved

Keywords

Metal alkoxide; Molecular precursor; Sol–gel; Rhenium; Niobium; Tantalum; Structure

Published in

Polyhedron
2007, volume: 26, number: 4, pages: 862-866
Publisher: PERGAMON-ELSEVIER SCIENCE LTD

SLU Authors

• Nikonova, Olesya

  • Department of Molecular Sciences, Swedish University of Agricultural Sciences
    

• Kessler, Vadim

  • Department of Molecular Sciences, Swedish University of Agricultural Sciences
    

• Seisenbaeva, Gulaim

  • Department of Molecular Sciences, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Bioenergy

Publication identifier

• DOI: https://doi.org/10.1016/j.poly.2006.09.088

Permanent link to this page (URI)

https://res.slu.se/id/publ/14008