Preparation and properties of difluoro(isoselenocyanato)phosphine: low-frequency vibrations of difluorophosphine pseudohalides

Abstract

Difluoro(soselenocyanato)phosphine has been prepared by reaction of bromodifluorophosphine with silver(I) isoselenocyanate. Its n.m.r., photoelectron, and i.r. spectra are reported. The low-frequency vibrations of the related compounds P(CN)F₂, PF₂(NCO), PF₂(NCS), and PF₂(NCSe) have been studied in the far i.r. with gas-phase samples. With B₂H₆, PF₂(NCSe) forms a complex formulated as PF₂(NCSe)·BH₃; ¹H, ¹¹B, ¹⁹F, and ³¹P n.m.r. data are reported for this complex.