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Issue 10, 1985
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Oxoalkyls of rhenium-(V) and-(VI). X-Ray crystal structures of (Me4ReO)2Mg(thf)4,[(Me3SiCH2)4ReO]2Mg(thf)2, Re2O3Me6 and Re2O3(CH2SiMe3)6

Abstract

The interaction of Grignard reagents with Re2O7, [Me3NH][ReO4], ReOCl4, or ReOCl3(PPh3)2 leads to the diamagnetic rhenium(V) complexes (Me4ReO)2Mg(thf), and [(Me3SiCH2)4ReO]2Mg(thf)2(thf = tetrahydrofuran) whose structures have been determined by X-ray crystallography and shown to consist of Mg2+ co-ordinated by thf and R4ReO(R = Me or CH2SiMe3). Both rhenium(V) species can be oxidised to the previously known rhenium(VI) compounds ReOR4 and Re2O3(CH2SiMe3)6. A novel high-yield synthesis of Re2O3(CH2SiMe3)6 and the preparation of the previously unknown Re2O3Me6 are reported. The X-ray crystal structures of these compounds have been determined to reveal linear Re–O–Re bridges with mutually trans-Re[double bond, length half m-dash]O groups. An o-xylenediyl complex {[o-(CH2)2C6H4]2ReO}2Mg(thf)4 has also been characterised.

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Article type: Paper
DOI: 10.1039/DT9850002167
Citation: J. Chem. Soc., Dalton Trans., 1985,0, 2167-2175
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    Oxoalkyls of rhenium-(V) and-(VI). X-Ray crystal structures of (Me4ReO)2Mg(thf)4,[(Me3SiCH2)4ReO]2Mg(thf)2, Re2O3Me6 and Re2O3(CH2SiMe3)6

    P. Stavropoulos, P. G. Edwards, G. Wilkinson, M. Motevalli, K. M. A. Malik and M. B. Hursthouse, J. Chem. Soc., Dalton Trans., 1985, 0, 2167
    DOI: 10.1039/DT9850002167

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