Bromoantimonates(III) vs. Bromobismuthates(III): Differences in the Tendency for the Formation of Polynuclear Complexes

Abstract

Pyridine-based Sb(III) bromide complexes with doubly charged cations, (PyC3)3[Sb2Br9]2 (I), (PyC4)[Sb2Br8] (II), (PyC5)2[α-Sb4Br16] (III), (PyC6)2[Sb2Br10] (IV), (4-MePyC2)2[Sb2Br10] (V), (4‑MePyC3)2[α-Sb4Br16] (VI), and (4-MePyC5)2[α-Sb4Br16] (VII), were synthesized and characterized by X-ray diffraction (CCDC nos. 2204718–2204724). The structures of these compounds were compared with the structures of related bromobismuthates(III).