The Synthesis and X-ray Crystal Structures of Homoleptic Tetrahedral Aryls of Osmium(IV) and of Cyclohexyls of Ruthenium(IV), Osmium(IV), and Chromium(IV)
The interaction of o-tolylmagnesium bromide or AlPh3(OEt2) with osmium tetraoxide leads to the isolation of the homoleptic, tetrahedral osmium(IV) compounds OsR4 (R = C6H4Me-o or C6H5). Thermally stable M (C6H11)4 compounds (M = Ru, Os, or Cr; C6H11 = cyclohexyl) are obtained by the interaction of the Grignard reagent with Ru2(O2CMe)4Cl, Os2(O2CMe)4Cl2, and CrCl3(thf)3 (thf = tetrahydrofuran) respectively. The structures of all five compounds have been determined by X-ray crystallography.
P. Stavropoulos et al., "The Synthesis and X-ray Crystal Structures of Homoleptic Tetrahedral Aryls of Osmium(IV) and of Cyclohexyls of Ruthenium(IV), Osmium(IV), and Chromium(IV)," Journal of the Chemical Society, Dalton Transactions, no. 3, pp. 557-562, Royal Society of Chemistry, Jan 1987.
The definitive version is available at http://dx.doi.org/10.1039/DT9870000557
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