Notes. Synthesis and crystal structures of [PPh4][MN{ButNC(O)NBut}Cl2](M = Ru or Os); a new reaction of tert-butyl isocyanate. Synthesis of W[ButNC(O)NBut]2(NHBut)2
- 1 January 1991
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 10,p. 2791-2794
- https://doi.org/10.1039/dt9910002791
Abstract
The interaction of the tetraphenylphosphonium salts of the ruthenium- and osmium-(VI) anions [RuO2Cl3]–, [RuO2Cl4]2– and [OsO2Cl4]2– with excess of tert-butyl isocyanate in acetonitrile forms the salts of the anions [MN{ButNC(O)NBut}Cl2]–, M = Ru or Os. X-Ray diffraction studies have shown the anions to have distorted square-pyramidal geometry with nitrido groups in axial positions. The metal nitrido groups have been shown to arise by C–N bond cleavage of unisolated tert-butylimido intermediates accompanied by cycloelimination of Me2CCH2 and HCl. Similar reactions using other aryl and alkyl isocyanates gave intractable products. The compound W[ButNC(O)NBut]2(NHBut)2 is formed on reaction of W(NBut)2(NHBut)2 with ButNCO.Keywords
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