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

A new Cu(II) coordination polymer, namely {[Cu-2(btb)(2)(sip)(OH)]aEuro cent(H2O)(0.25)} (n) (btb = 4,4'-bis(1,2,4- triazolyl-1-yl)-biphenyl, H(3)sip = 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) , b = 14.3478(3) , c = 21.2719(5) , beta = 125.325(2)A degrees, V = 3727.11(14) (3), Z = 4, C40H28.50Cu2N12O8.25S, M (r) = 968.39, D (c) = 1.726 g/cm(3), mu = 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.