Bistris(propane-13-diamine-κ2NN′)­nickel(II) di­aqua­bis(propane-13-di­amine-κ2NN′)nickel(II) hexa­bromide dihydrate

摘要

In the title compound, [Ni(C3H10N2)3]2[Ni(C3H10N2)2(H2O)2]Br6·2H2O, one Ni²⁺ cation, located on an inversion centre, is coordinated by four N atoms from two ligands and by two water O atoms. The other Ni²⁺ cation, located in a general position, is coordinated by six N atoms from three ligands. In both cases, the Ni²⁺ cation has an octa­hedral coordination environment. The overall structural cohesion is ensured by three types of hydrogen bonds, N—H⋯Br, O—H⋯Br and O—H⋯O, which connect the two types of complex cations, the bromide counter-anions and the lattice water molecules into a three-dimensional network.