Figure 1.

Crystal structure of compounds 1 a (a, c, e) and 1 b (b, d, f). Asymmetric units (a, b), with cluster atoms (excluding H atoms) and Br atoms given as displacement ellipsoids (50 % probability), imidazolium cations shown in wire mode, and H atoms are omitted for clarity. Simplified view of the packing of the anions in the crystal structures (c–f; Sn/O/S units shown only), with {SnS₄} subunits given in polyhedral representation and the neighboring pairs of anions in 1 a indicated as pairs of clusters with yellow or red polyhedra, respectively. Structure diagrams with full labelling Scheme are given in the Supporting Information (Figures S6 and S7).