Crystal structure of p-bromophenylimino(triphenyl)phosphorane

Abstract

The crystal structure of p-bromophenylimino(triphenyl)phosphorane was determined by X-ray diffraction and refined to R 0·099 for 3009 reflections. The crystals are monoclinic, space group C2/c, with a= 16·43, b= 13·57, c= 19·42 Å, and β= 110·64°. The PN bond length is 1·567 Å, the P–N–C angle is 124·2°, and the p-bromophenyl ring is 35° out of the P, N, C plane. The bonding in iminophosphoranes is discussed in the light of the results.