A PHOSPHORANE WITH A (λ5)-PHOSPHORUS-SILICON BOND

Abstract Reaction of bis(trimethylsilyl)magnesium with bis(catechyl)chlorophosphorane has furnished the first phosphorane with a (λ5)-phosphorus-silicon bond, extending the range of atoms known to give rise to stable phosphoranes when bonded to five-co-ordinate phosphorus. The novel phosphorane has been characterized by analysis, n.m.r. spectra and from its mass spectrum.