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

Nikonova OA, Kessler VG, Drobot DV, Shcheglov PA, Seisenbaeva GA

doi:10.1016/j.poly.2006.09.088

Research article - Peer-reviewed, 2007

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

Nikonova OA, Kessler VG, Drobot DV, Shcheglov PA, Seisenbaeva GA

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

Authors' information

Nikonova, Olesya

Swedish University of Agricultural Sciences, Department of Chemistry

Kessler, Vadim

Swedish University of Agricultural Sciences, Department of Chemistry

Seisenbaeva, Gulaim

Swedish University of Agricultural Sciences, Department of Chemistry

Drobot, Dmitri V.

Shcheglov, Pavel A.

UKÄ Subject classification

Renewable Bioenergy Research

Publication Identifiers

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

URI (permanent link to this page)

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