Antimony-121 Mössbauer spectroscopy of some cyanide adducts of antimony pentachloride

Abstract

¹²¹ Sb Mössbauer spectra have been measured at 4·2 K in some cyanide adducts SbCl₅,NCR (R = Me, Cl, Bu^t, Ph, Et, CH₂Cl, CCl₃, CHCH₂). Hyperfine interactions deduced from transmission integral analysis of the spectra are interpreted in terms of the varying degree of electron transfer from the cyanide to the antimony atom. The results are discussed in combination with data from nuclear quadrupole resonance and vibrational spectroscopy studies.