Bromine-rich complexes of bismuth: experimental and theoretical studies.

Three novel polybromide complexes of bismuth(iii) - (2,6-MePyH)[BiBr(Br)] (1), (Hbpp){BiBr} (2) and (3-ClPyH){BiBr} (3) - were synthesized. The results of an extended screening involving a set of organic cations resulting in the formation/non-formation of Bi(iii) polybromides are presented and discussed. The nature of BrBr interactions in Bi(iii) polybromides was investigated by theoretical methods, enabling the estimation of their energies.