Some trimethyl phosphine and trimethyl phosphite complexes of tungsten(IV) |
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| Authors: | Ernesto Carmona Luis Sánchez Manuel L Poveda Richard A Jones John G Hefner |
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| Institution: | Departamento de Química Inorgánica, Facultad de Química, Universidad de Sevilla, Sevilla, Spain;Chemistry Department, University of Texas at Austin, Austin, TX 78712, U.S.A. |
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| Abstract: | Direct reduction of WCl6 with PMe3 in toluene at 120°C in a sealed tube affords the complexes WCl4(PMe3)x] (x = 2, 3). WCl4(PMe3)3] abstracts oxygen from equimolar amounts of water in wet acetone or tetrahydrofuran to give WOCl2(PMe3)3] in very high yields. This procedure has been successfully applied to the high yield synthesis of other known oxotungsten(IV) complexes, WOCl2(PR3)3] (PR3 = PMe2Ph and PMePh2). Metathesis reactions of WOCl2(PMe3)3] with NaX give WOX2(PMe3)3] (X = NCO, NCS) and WOX2(PMe3)] (X = Me2NCS2). The synthesis of the trimethylphosphite analogue, WOCl2(P(OMe)3)3], is also described and the structures of the new complexes assigned on the basis of IR and 1H and 31P NMR spectroscopy. |
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| Keywords: | Authors to whom correspondence may be addressed |
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