Abstract
The synthesis of a tris(pyrazolyl)borate-stabilized molybdenum (VI) imido alkylidene complex, TpMo(CHC(Me)2Ph)(NAr) (OTf) (1) [Ar= 2,6-i-Pr2-C6H3,Ph=C6H5,OTf=OSO2CF3], has been achieved by addition of potassium hydridotris(1-pyrazolyl)borate (KTp) to Mo(CHC(CH3)2Ph)(NAr)(OTf)2(DME). Stirring compound1 over alumina in the presence of H2O gave TpMo(CH2C(Me)2Ph)(NAr)(O) (2). Alternatively, compound1 was converted to2 by the addition of CsOH·H2O in THF. A single crystal of [TpMo(NAr)(O)]2O (4) was isolated from a solution of2. Compounds2 and4 have been characterized by X-ray crystallography and the bonding considerations about the molybdenum atoms are discussed.
Published Version
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