Deboronation of ortho-carborane by an iminophosphorane: crystal structures of the novel carborane adduct nido-C2B10H12·HNP(NMe2)3 and the borenium salt [(Me2N)3PNHBNP(NMe2)3]2O2+(C2B9H12)2

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Matthew G. Davidson, Mark A. Fox, Thomas G. Hibbert, Judith A. K. Howard, Angus Mackinnon, Ivan S. Neretin and Kenneth Wade


Abstract

The structures of the adduct nido-C2B10H12·HNP(NMe2)3 and the borenium salt [(Me2N)3PNHBNP(NMe2)3]2O2+(C2B9H12)2, both obtained from 1,2-C2B10H12 and HNP(NMe2)3, were determined by X-ray crystallography; the adduct represents the first structurally determined carborane of its type, a possible intermediate in the well known conversion of closo-1,2-C2B10H12 into the nido-7,8-C2B9H12 anion by bases.


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