Reactions of H2tza (H2tza = 1H‐tetrazolate‐5‐acetic acid) with Mg(NO3)2·6H2O, Ca(NO3)2·4H2O, or Ba(NO3)2 with the presence of KOH under hydrothermal conditions, produced three new coordination compounds, [M(tza)(H2O)2] (M = Mg (1), Ca (2), Ba (3)). These compounds were structurally characterized by elemental analysis, IR spectroscopy, and single‐crystal X‐ray diffraction. Compounds 1 and 3 display 2D structures, whereas 2 reveals a 1D structure with bridging tza ligand molecules as linkers. Furthermore, the luminescence properties of 1–3 at room temperature in the solid state were also investigated. The results show that the nature of metal ions play an important role in governing the molecular frameworks of 1–3, and the strong coordinate abilities of carboxylate and tetrazolate group, endow tza with abundant coordination modes.
Two novel Cd(II) coordination polymers [Cd 4 (C 6 H 4 O 2 N) 8 (H 2 O) 4 ] n (1) and [Cd 2 (C 10 H 2 O 8 )(H 2 O) 6 ] n (2) have been synthesized under hydrothermal condition and structurally characterized. Crystal data: (1), orthorhombic, Pbca, a = 11.4494(19)(2), triclinic, P1, a = 5.5962(7) Å, b = 7.7758(6) Å, c = 9.6975(10) Å, α = 111.981(5) • , β = 101.649(6) • , γ = 98.240(5) • , V = 371.95(7) Å 3 , Z = 2, D calc = 2.603 g·cm −3 . Complex (1) possesses threedimensional infinite structure, while complex (2) adopts two-dimensional layers and the layers are connected by the many types of hydrogen bonds, forming three-dimensional network. Study results of the photophysical properties show that both complexes can emit strong blue fluorescence and complex (1) also emits phosphorescence (λ pl max = 511 nm, τ = 32 ms) in the solid state at room temperature.
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