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Reactions of Lithiated Diphosphanes R2P–P(SiMe3)Li (R = tBu, iPr, iPr2N, Et2N) with [Cp2WCl2]. Syntheses and Structures of the First Terminal Phosphanylphosphido Complexes of Tungsten(IV)

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Figshare2016-02-22 更新2026-04-29 收录
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Reactions of R2P–P­(SiMe3)Li (R = tBu, iPr, iPr2N, Et2N) with [Cp2WCl2] yield terminal phosphanylphosphido complexes [Cp­(C5H4P-PR2)­WH] or [Cp­{C5H4P-PR2}­W­(SiMe3)] by way of a hydrogen or SiMe3 migration to tungsten. The solid-state structures of [Cp­(C5H4P–PtBu2)­WH] and [Cp­(C5H4P-PNEt2)­WH] were established by single-crystal X-ray diffraction. Two stereoisomers of [Cp­(C5H4P–PtBu2)­WH] were identified by solution NMR spectroscopy. Reaction of iPr2P–P­(SiMe3)Li with [Cp2WCl2] yields red crystals of dimeric phosphinidene complex [Cp­(C5H4P)­W]2 as side product.

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2016-02-22
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