A linear potassium metalated vanadium(IV) polymeric alkoxide: Structural and spectroscopic studies |
| |
| Institution: | 1. Institute of Semiconductor Physics of NASU, pr. Nauki 41, 03028 Kiev, Ukraine;2. Institute of High Technologies, Taras Shevchenko National University of Kiev, pr. Glushkova 4g, 03033 Kiev, Ukraine;3. Zentrum für Oberflächen- und Nanoanalytik, Johannes Kepler University Linz, Altenberger Str. 69, 4040 Linz, Austria |
| |
| Abstract: | We have been interested in the preparation of alkoxometallate “bricks” of the M′{M(OR)n} type, with M′ = alkaline metal, M = vanadium(IV) and R = isopropyl or tert-butyl, to be employed as starting materials in salt-elimination reactions with other transition metal complexes. Here, we report the synthesis, spectroscopic characterisation and molecular structure of {K2(VO)2(OPri)6(PriOH)2}∞] (1), prepared by a combination of Lewis acid–base and micro-hydrolysis reactions. The linear polymeric chain contains planar four-membered {(V O)2(μ-OPri)2} rings with vanadyl groups in anti-coplanar configuration; the rings are connected by “bridging” K(HOPri)+ units. Powder and solution EPR spectra suggest a spin triplet ground state, with a very weak ferromagnetic interaction between the vanadium(IV) centres at room temperature. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
