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Dalton Transactions

The international journal for inorganic, organometallic and bioinorganic chemistry



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Paper

J. Chem. Soc., Dalton Trans., 1988, 669 - 673, DOI: 10.1039/DT9880000669

Synthesis of homoleptic tetrahedral aryls of rhenium(IV) and ruthenium(IV). X-Ray crystal structures of tetrakis(o-methylphenyl)rhenium(IV), tetrakis(o-methylphenyl)oxorhenium(VI), and tetrakis(o-methylphenyl)-ruthenium(IV)

Paul D. Savage, Geoffrey Wilkinson, Majid Motevalli and Michael B. Hursthouse

The reaction of ReCl4(thf)2(thf = tetrahydrofuran) with o-methylphenylmagnesium bromide leads to the isolation of Re(o-MeC6H4)4, which has been characterised by X-ray crystallography. Air oxidation of this compound allows the isolation of the previously reported paramagnetic ReO(o-MeC6H4)4, which has also been characterised by X-ray crystallography. The interaction of aryl Grignard reagents with NEt4[RuCl5(solv)](solv = acetonitrile or tetrahydrofuran) leads to the isolation of homoleptic, tetrahedral ruthenium(IV) species, Ru(aryl)4, aryl =o-methylphenyl,2,6-dimethylphenyl, and p-t-butylphenyl. Tetrakis(mesityl)ruthenium(IV), mesityl = 2,4,6-trimethylphenyl, and Ru(o-MeC6H4)4 can be obtained from the interaction of diruthenium(II,II) tetra-acetate, Ru2(µ-O2CMe)4, with the respective Grignard reagents. The X-ray crystal structure of Ru(o-MeC6H4)4 has also been determined.