Bromine-rich complexes of bismuth: experimental and theoretical studies

Abstract

Three novel polybromide complexes of bismuth(III) – (2,6-MePyH)₃[BiBr₅(Br₃)] (1), (H₂bpp){[BiBr₅](Br₂)} (2) and (3-ClPyH)₂{[BiBr₅](Br₂)} (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 Br⋯Br interactions in Bi(III) polybromides was investigated by theoretical methods, enabling the estimation of their energies.