Crystal structure and catalytic properties of a two-dimensional copper(II) coordination polymer derived from rigid bis(triazole)

Abstract

A new Cu(II) coordination polymer, namely {[Cu₂(btb)₂(sip)(OH)]•(H₂O)_0.25}_n (btb = 4,4′-bis(1,2,4- triazolyl-1-yl)-biphenyl, H₃sip = 5-sulfoisophthalic acid), is hydrothermally synthesized and characterized by elemental analyses, infrared (IR) spectroscopy, and single crystal X-ray diffraction. It crystallizes in the monoclinic space group P2_1/c, a = 14.9676(3) Å, b = 14.3478(3) Å, c = 21.2719(5) Å, β = 125.325(2)°, V = 3727.11(14) ų, Z = 4, C₄₀H_28.50Cu₂N₁₂O_8.25S, M_r = 968.39, D_c = 1.726 g/cm³, μ = 1.274 mm^–1. The structural analyses reveal that the compound displays a 2D binodal rarely (4,5)-connected network with 4,5L50 topology. Moreover, the thermal and catalytic properties of the complex for the degradation of the congo red azo dye in a Fenton-like process are investigated.