catena-Poly[N,N,N',N'-tetra-methyl-ethylendi-ammonium [[tetra-bromido-antimonate(III)]-µ-bromido] hemihydrate].

The asymmetric unit of the title compound {(C6H18N2)2[Sb2Br10]·H2O} n , consists of two tetra-methyl-ethylendi-ammonium cations that are located on centres of inversion, as well as one tetra-methyl-ethylendi-ammonium cation, one water mol-ecule, one distorted octahedral [SbBr6](3-)anion and one bisphenoidal [SbBr4](-) anion in general positions. The [SbBr6](3-) and [SbBr4](-) anions are linked together by two long Sb-Br bonds of 3.2709 (8) and 3.5447 (7) Šinto {[Sb2Br10](4-)} n chains along [001]. One of the three tetra-methyl-ethylendi-ammonium cations is disordered and was refined using a split model (occupancy ratio 0.58:0.42). The cations and the water mol-ecule are connected to the {[Sb2Br10](4-)} n polymeric anions by weak N-H ⋯Br and O(water)-H ⋯Br hydrogen bonding.

Tris(N,N-di-methyl-anilinium) tri-µ-bromido-bis[tribromido-anti-monate(III)].

In the title compound, (C8H12N)3[Sb2Br9], two of the three unique N,N-dimethyanilinium cations exhibit flip-flop disorder with an occupancy ratio of 0.58 (1):0.42 (1). N-H⋯Br hydrogen bonds link the organic cations and bioctahedral face-sharing anions into a three-dimensional network.