A 2D BITRIAZOLE-BRIDGING COPPER(II) POLYMER: HYDRO THERMAL SYNTHESIS, CRYSTAL STRUCTURE, AND FLUORESCENCE
L. Xu, X.-CH. Zhang, W.-G. Liu, B. Liu
Keywords: copper(II), crystal structure, fluorescence, 1, 2, 4-triazole
Pages: 181-185
Abstract
A new 2D metal-organic coordination polymer [Cu(trtr)2]n (1) (Htrtr = 3-(1,2,4-triazolyl-4-yl)-1H-1,2,4-triazole) is synthesized through the hydrothermal reaction of Cu(ClO4)2 with Htrtr. The crystal structure of 1 is determined by a direct method from X-ray diffraction data (Rigaku Mercury CCD, MoKα radiation). 1 crystallizes in the monoclinic C2/c space group with unit cell parameters: a = 14.158(2) Å, b = 9.8050(14) Å, c = 11.413(3) Å, β = 127.9870(10)°, v = 1248.7(4) Å3, z = 4, Dcal = 1.775 g/cm3. 1 features a 2D grid based on the propagation of 28-membered rings, which is further fabricated into a 3D supramolecular framework via the hydrogen bond linkage. The fluorescence of 1 shows a blue emission at 441 nm with a 14 nm red-shift compared to that of free Htrtr, which can be assigned to LMCT.
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