Nature of bonding in aminophosphonium salts: molecular structure of N,N-dimethylaminotriphenylphosphonium tribromide
Abstract
The crystal structure of N,N-dimethylaminotriphenylphosphonium tribromide (3) was studied by X-ray diffraction analysis. Crystals are monoclinic, space group P21/c, a= 9.921(2), b= 15.426(5), c= 14.048(1)Å, β= 90.54(1)° and Z= 4. The P–N bond length is rather short, 1.63 Å, and the arrangement of bonds around nitrogen is planar. These results, compared with previous reports on analogous compounds support the idea of a strong π character of the [graphic omitted]–N bond.