Syntheses, structures and photoluminescence properties of cadmium(II) and zinc(II) complexes with pyridinylcarboxamide-containing ligand |
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| Authors: | Yue Zhao |
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| Institution: | Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructure, Nanjing University, Nanjing 210093, China |
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| Abstract: | Four new coordination complexes Cd(DPBA-3)2(H2O)2](ClO4)2·2H2O (1), Cd(DPBA-3)(DMF)(NO3)2]·DMF (2), Cd3(DPBA-3)2(SCN)6]·2DMF·4H2O (3) and Zn(DPBA-3)(SCN)2] (4) DPBA-3 = N,N′-di(pyridin-3-yl)pyridine-3,5-dicarboxamide] have been synthesized and characterized by elemental analysis, IR and single crystal X-ray diffraction. Complexes 1, 3 and 4 exhibit three different types of one-dimensional (1D) chain structures constructed by the metal ions and DPBA-3 ligands, and the Cd(II)-DPBA-3 1D chains in 3 are further linked by bridging SCN− ligands to afford a three-dimensional (3D) framework. Complex 2 possesses a (6,3) two-dimensional (2D) layer structure. In 1-4, the hydrogen bonds involving the amide groups play important role to stabilize the resultant frameworks. The photoluminescence properties of the DPBA-3 and the complexes were studied in the solid state at room temperature. |
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| Keywords: | Coordination polymer Tridentate ligand Crystal structure Luminescence |
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