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II. Theoretical and Structural Chemistry

Reactions of N≡W(OtBu)3 and O=W(OiPr)4 with Low-Coordinate Phosphorus Compounds: Similarities and Differences

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Pages 814-821 | Received 26 Jul 2010, Accepted 30 Aug 2010, Published online: 25 Apr 2011
 

Abstract

The reactions of N≡W(OtBu)3 and O=W(OiPr)4 with (Me3Si)2NPNSiMe3 (I), (Me3Si)2NPNtBu (II), and (Me3Si)2NP(NSiMe3)2 (III) in benzene have been studied. Low-coordinate phosphorus derivatives react with above mentioned tungsten compounds via 1,2-addition of an W-OR bond across the P=N bond, resulting in four-membered metallacycles. (Me3Si)2N-P(NSiMe3)2 reacts with O=W(OiPr)4 in a different manner via [2 + 2] cycloaddition. The structure of all new compounds was elucidated by 1H, 13C, and 31P NMR spectroscopy. Compound [(Me3Si)2N-P(NSiMe3)2(O)]{W(OiPr)4} (6) was also characterized by single crystal X-ray analysis.

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