A new 3D supramolecular compound containing 1D image chains and 1D water chains

The first crystal structure involving the discrete unsubstituted 1,2,4-triazolate anion is reported. In the title compound, [Na2(H2O)8]n(trz)2n [trz = 1,2,4-triazolate] (1), each sodium(I) ion is coordinated by six water molecules with a slight distorted octahedron geometry. Each Na(I) are bridged by two μ2-aqua ligands and arranged in an alternating fashion to construct a 1D zigzag {[Na2(H2O)8]2+}n chain. The 3D supermolecular framework is formed with 1D {[Na2(H2O)8]2+}n chain as the assembly units, by 1D water chain and 1,2,4-triazolate anion as the hydrogen bonding spacers.