- Oxoaryls of Rhenium-(V) and -(VI) and Osmium(VI). X-Ray Crystal Structures of Dimesityldioxorhenium(VI), Tetramesityloxorhenium(VI), and Dimesityldioxoosmium(VI)
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The interaction of mesitylmagnesium bromide with or Re2O7 leads to the isolation of the diamagnetic rhenium(V) complex 2Mg(thf)2 (mes = mesityl, thf = tetrahydrofuran), which can be oxidized to the paramagnetic compound ReO2(mes)2; ReOCl4 gives, instead, the paramagnetic rhenium(V) complex ReO(mes)4 along with minor amounts of ReO2(mes)2, upon oxidation of the reaction solutions.All three rhenium starting materials with o-tolylmagnesium bromide or o-methoxyphenylmagnesium bromide lead similarly to the paramagnetic complexes ReO(o-MeC6H4)4 and ReO(o-MeOC6H4)4, respectively.The diamagnetic compound OsO2(mes)2 has also been prepared by oxidizing solutions from the interaction of osmium tetraoxide with the appropriate Grignard reagent.The X-ray crystal structures of ReO2(mes)2, OsO2(mes)2, and ReO(mes)4 have been determined to reveal tetrahedral, tetrahedral and tetragonal pyramidal geometries respectively.
- Stravropoulos, Pericles,Edwards, Peter G.,Behling, Torsten,Wilkinson, Geoffrey,Motevalli, Majid,Hursthouse, Michael B.
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p. 169 - 176
(2007/10/02)
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