Heterometallic alkoxides of molybdenum and heavy transition metals - the synthesis and prospects of application

Johansson, A.; Roman, M.; Kessler, Vadim; Seisenbaeva, Gulaim

doi:10.1023/A:1008783327078

Abstract

The alkoxides of molybdenum and other heavy transition elements such as Ta or Nb were found to be unreactive towards each other. The bimetallic derivatives could be obtained either via partial hydrolysis that gave Mo2Ta4O8(OMe)(16) (I) or via partial thermolysis that provided access to Mo4Ta2O8((OPr)-Pr-i)(1)4 (II), Mo3Ta2O8((OPr)-Pr-i)(10) (III), Mo4Ta4O16((OPr)-Pr-i)(12) (IV), Mo4Nb2O8((OPr)-Pr-i)(14) (V) and Mo4W2- xMo(x)O(10)((OPr)-Pr-i)(12) (VI). I-VI can be isolated only from hydrocarbon media as the presence of alcohols leads to precipitation of insoluble homometallic derivatives of molybdenum. The cathodic reduction of MoO(OR)(4) (R = Me, Et) in the presence of LiCl and M(OR)(5) (M = Nb, Ta) leads only to formation of LiMo2O2(OMe)(7)(MeOH) (VII) or LiMo2O2(OEt)(7) (VIII) respectively.

Keywords

precursor chemistry; heterometallic alkoxides; molybdenum alkoxides; tantalum alkoxides; niobium alkoxides; tungsten alkoxides

Published in

Journal of Sol-Gel Science and Technology
2000, volume: 19, number: 1-3, pages: 725-728
Publisher: KLUWER ACADEMIC PUBL

SLU Authors

Kessler, Vadim
- Department of Molecular Sciences, Swedish University of Agricultural Sciences

UKÄ Subject classification

Inorganic Chemistry
Other Materials Engineering

Publication identifier

DOI: https://doi.org/10.1023/A:1008783327078

Permanent link to this page (URI)

https://res.slu.se/id/publ/50556