Crystal Structures and Luminescence Properties of Two One-Dimensional Zinc Coordination Polymers Derived from a bis(Triazole) Ligand

Abstract

Two new mixed-ligand Zn(II) coordination polymers, namely {[Zn(dtb)(1,3-bdc)(H₂O)₂](H₂O)}_n (1) and {[Zn1.5(dtb)(1,3,5-btc)(H₂O)₅](H₂O)}_n (2) (dtb = 1,3-di-(1,2,4-triazole-4-yl)benzene, 1,3-H₂bdc = 1,3- benzenedicarboxylic acid, 1,3,5-H₃btc = 1,3,5-benzenetricarboxylic acid) are hydrothermally synthesized and characterized by elemental analyses, infrared spectroscopy, powder and single crystal X-ray diffraction analyses. Both complexes display 1D chain structures. The thermal stabilities and luminescence properties of compounds 1 and 2 are also investigated. Crystal data: 1. C₁₈H₁₈N₆O₇Zn, M_r = 495.75, triclinic, P-1, a = 10.0820(11) Å, b = 10.1833(11) Å, c = 11.2000(12) Å, α = 80.8680(10)°, β = 73.7290(10)°, γ = 63.4320(10)°, V = 986.52(18) ų, Z = 2, R(F) = 0.0246, wR(F²) = 0.0664; 2. C₁₉H₂₃N₆O₁₂Zn_1.5, M_r = 625.49, triclinic, P-1, a = 6.588(4) Å, b = 11.757(7) Å, c = 15.724(9) Å, α = 76.883(6)°, β = 86.094(7)°, γ = 75.989(7)°, V = 1150.8(12) ų, Z = 2, R(F) = 0.0355, wR(F²) = 0.0822.