Fluoro(nitrile)xenon(II) cations, RCN–XeF+ AsF6–(R = H, CH3, CH2F, C2H5, C2F5, C3F7, or C6F5); novel examples of xenon–nitrogen bonds and 129Xe–13C, 129Xe–1H, and 129Xe-14N nuclear spin-spin couplings

Abstract

A new class of Xe–N bonded compound results from the interaction of the electron lone pair of a nitrile with the Lewis acid, XeF⁺; the cationic adducts, RCN–XeF⁺, have been derived from the interaction of the appropriate nitrile with either XeF⁺AsF₆- or Xe₂F₃⁺AsF₆^– in anhydrous HF at low temperature and characterized in the solid state by Raman spectroscopy (for R = H and Me) and in HF solution by ¹²⁹Xe, ¹⁹F, ¹⁴N, ¹³C, and ¹H n.m.r. spectroscopy.