Synthesis, Characterization and Photoluminescent Property of a Trinucleated Cadmium (II) Coordination Polymer Involving In Situ Ligand Reaction

A novel two-dimensional cadmium complex [Cd-3(pzta)(2)(mu-Cl)(4)H2O)(2)]n (1) has been synthesized hydrothermally by the reaction of pyrazine carbonitrile and sodium azide in the presence of cadmium(II) chloride as Lewis acid catalyst. Complex 1 was characterized by elemental analysis, thermal gravimetric analysis, IR spectroscopy and single-crystal X-ray diffraction. Complex 1 crystallizes in triclinic crystal system, having the P space group, which by utilizing hydrogen-bonding extends the molecular complex into 3D hydrogen-bonded metallo-supramolecular networks. It has been shown that N-H-O hydrogen bond based on (26) and (12) supramolecular synthons can be relied upon as effective tools for the assembly and organization of hexa-coordinated complex. Furthermore, compound 1 shows strong photoluminescence properties at room temperature in solid state.