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

Houda Kharrat; Slaheddine Kamoun; François Michaud

doi:10.1107/S1600536813028894

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

Acta Crystallogr Sect E Struct Rep Online. 2013 Nov 6;69(Pt 12):m637-8. doi: 10.1107/S1600536813028894.

Authors

Houda Kharrat¹, Slaheddine Kamoun¹, François Michaud²

Affiliations

¹ Laboratoire de Génie des Matériaux et Environnement, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, BP 1173, Sfax, Tunisia.
² Service commun d'analyse par diffraction des rayons X, Université de Brest, 6 avenue Victor Le Gorgeu, CS 93837, F-29238 Brest Cedex 3, France.

Abstract

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) Å into {[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.