A New One-dimensional Chain-like Ag(Ⅰ) Complex with Schiff Base Ligand Containing 4-Amino-1,2,4-triazole

The title compound, polyN-1-(3-pydidyl)ethylidene]-4H-1,2,4-triazol-4-amine silver(Ⅰ) tetrafluoroborate], Ag(C9H9N5)(BF4)]n, is the result of complexing Ag cation with N-1-(3-pydidyl)ethylidene]-4H-1,2,4-triazol-4-amine (L), and its crystal structure was determined by singlecrystal X-ray diffraction. The crystal belongs to the monoclinic system, space group C2/c with a =18.899(6), b = 9.882(2), c = 15.472(4) (A), β = 120.158(3)°, V = 2498.5(11) (A)3, C9H9AgBF4N5, Mr =381.89, Dc = 2.031 g/cm3, μ(MoKα) = 1.659 mm-1, F(000) = 1488, Z = 8, the final R = 0.0441 and wR = 0.0619 for 1094 observed reflections (Ⅰ＞ 2σ(Ⅰ)). In the structure, ligand L bridges the two metal Ag(Ⅰ) centers in a bidentate fashion and each metal ion coordinates with two nitrogen atoms, forming a one-dimensional rectangular chain. The neighboring chains are connected by two additional Ag-N weak interactions into a 3D framework structure. The title compound shows blue fluorescence property at room temperature.