metal-organic compounds
Open access
The asymmetric unit of the title compound {(C6H18N2)2[Sb2Br10]·H2O}n, consists of two tetramethylethylendiammonium cations that are located on centres of inversion, as well as one tetramethylethylendiammonium cation, one water molecule, 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 tetramethylethylendiammonium cations is disordered and was refined using a split model (occupancy ratio 0.58:0.42). The cations and the water molecule are connected to the {[Sb2Br10]4−}n polymeric anions by weak N—H Br and O(water)—H Br hydrogen bonding.
metal-organic compounds
Open access
The asymmetric unit of the title compound, (C7H10NO)2[SnBr6]·2H2O, contains one cation, one half-dianion and one lattice water molecule. The [SnBr6]2− dianion, located on an inversion center, exhibits a highly distorted octahedral coordination environment, with Sn—Br bond lengths ranging from 2.2426 (9) to 3.0886 (13) Å. In the crystal, O—HBr, N—HBr, N—HO and C—HBr hydrogen bonds consolidate the packing, which can be described as consisting of alternating anionic (containing dianions and lattice water molecules) and cationic layers parallel to ab plane.