Abstract
Two new polymeric complexes, [Zn(dpa)(pyz)<sub>0.5</sub>]<sub>n</sub> (1; dpa = diphenate and pyz = pyrazine) and [Mn<sub>3</sub>(bpdc)<sub>3</sub>(py)<sub>4</sub>]<sub>n</sub> (2; bpdc = biphenyl-4,4'-dicarboxylate and py = pyridine) were successfully isolated by the hydro- and solvo-thermal technique, respectively. The complexes were characterized by elemental and thermal analysis, vibrational IR spectroscopy, and by single crystal x-ray structure determination. For 2, magnetic property was also investigated. Complex 1 is a two-dimensional layer structure consisting of a paddle-wheel building unit of Zn-dpa chains bridged by pyrazine. While, complex 2 consists of linear trimeric Mn3 cluster as building unit to form 3D network. In the complexes, dpa<sup>2−</sup> (1) and bpdc<sup>2−</sup>(2) ligands show a typical bis-monodendate bridging and two kinds of bridging modes; a typical bridging and chelating/bridging mode, respectively.
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