Synthesis and structure of [(ButN)P(μ-NBut)2P(PCy)Li2 ·thf]2; an unusual cage compound containing an amido/phosphido functionalised [(ButN)P(μ-NBut)2P(PCy)]2− dianion (Cy = C6H11)
Abstract
The reaction of [(ButNH)P(μ-NBut)2PCl] (1) with CyPHLi and BunLi in toluene gives [(ButN)P(μ-NBut)2P(PCy)Li2 ·thf]2 (2), an unusual aggregate containing the first example of a phosphine-functionalised cyclodiphosphazane anion [(ButN)P(μ-NBut)2P(PCy)]2− .