Add time:08/14/2019         Source:sciencedirect.com

Four new coordination polymers, namely, [Co(L)2]n (1) and [Co(L)(tp)0.5]n·nH2O (2), [Zn(L)2]n·0.5nH2O (3) and [Zn(L)(suc)0.5]n·nH2O (4) (HL = 4-(3-carboxyphenyl)-2,6-di(pyrazinyl)pyridine, H2tp = benzene-1,4-dicarboxylic acid, H2suc = succinic acid), were constructed by changing metal ion and introducing auxiliary ligand under hydrothermal condition. X-ray single diffraction studies reveal that compounds 1 and 3 have similar structures and crystallized in the monoclinic system with P21/c space group, which show infinite zigzag chains and are further extended into a 2D supramolecular layer by inter-molecular hydrogen bonds. Compounds 2 and 4 display infinite ladder chains and are further extended into a 3D supramolecular network by inter-molecular hydrogen bonds. Additionally, magnetic and photoluminescence properties of 1–4 have been investigated.

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