metal-organic compounds
In the title compound, (C8H8N4)[ReCl6]·2H2O, the Re atom occupies an inversion centre and is octahedrally coordinated by chloride anions. The cation also has an inversion centre. Various N—HO, O—HCl and C—HCl interactions help to stabilize the crystal packing.
organic compounds
The crystal structure of 4-acetylpyridinium chloride, C7H8NO+·Cl−, consists of organic layers and Cl− anions, which lie within these layers. A hydrogen-bonding network of N—HCl interactions stabilizes the structure.
metal-organic compounds
The asymmetric unit of the title compound, (C12H13N2)2[ReO4]I3, contains two 4,4′-dimethyl-2,2′-bipyridinium cations, one ReO4− anion and two half-triiodide anions, each anion lying on a centre of symmetry. The crystal packing is stabilized by N—HO, C—HO and C—HI interactions.