Crystalline products of bromoantimonate(iii) oxidation by Br2 in the presence of different cations: diversity of structural types and patterns of halogen bond systems

Abstract

Reactions of bromoantimonate(III) containing solutions with Br₂ in the presence of different organic cations result in structurally highly diverse crystalline products readily forming halogen bonds (XBs). Herein, we add six new compounds to this palette using 1,n-bis(3-methylpyridinium)- or (4-methylpyridinium)alkane dications; the complexes were characterized using X-ray diffraction and thermogravimetric analysis (TGA). Further, we discuss all previous results in this field, including quantum chemistry investigation of the features of XBs in such compounds.