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
AbstractNiobium 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
KeywordsMetal alkoxide; Molecular precursor; Sol–gel; Rhenium; Niobium; Tantalum; Structure
2007, volume: 26, number: 4, pages: 862-866
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Drobot, Dmitri V.
Shcheglov, Pavel A.
UKÄ Subject classification
Renewable Bioenergy Research
URI (permanent link to this page)