Abstract
Faint pink crystals of the supramolecular coordination polymer (SCP) {[Cd3(pyzca)6(H2O)4]·8H2O}, 1 were obtained by the reaction of cadmium sulfate with pyrazine-2-carboxylic acid (pyzcaH) as ligand. The structure of 1 was characterized by single crystal X-ray diffraction, elemental analyses, electronic, infrared (IR), NMR spectra and thermal studies. The SCP 1 expands along the a-axis creating 1D-chain which compressed like a sprig. The 1D-chains extends via coordinate bonds forming 2D-layer constructing wide rectangular rings. The 2D-layers are stacked to give rise to the 3D-open framework generating voids accommodating the guest water molecules. The catalytic behavior of 1 was investigated for the degradation of acid blue 92 dye (AB-92). The reaction is first order with respect to AB-92 dye. Mineralization of AB-92 was investigated by FT-IR spectra. Disodium salt of terephthalic acid photoluminescence probing technology was carried out to identify the reactive •OH radicals. The kinetic data indicated that 1 are effective catalyst for degradation of AB-92. The luminescent behavior of complex 1 was also discussed in details. The photoluminescence of SCP 1 indicates that it can become an interesting candidate for applications in the field of photoactive materials.
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