Syntheses,Crystal Structures,and Fluorescence Properties of Two Transition Metal‐Organic Coordination Polymers Based on 4,4′‐Dimethyl‐2,2′‐bipyridine |
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Authors: | Yuexia Shan Qin Chen Lei Wang Wenli Zhang Liang Ni |
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Affiliation: | School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China |
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Abstract: | Two transition metal‐organic coordination polymers, [Mn2(1,3‐bdc)2(Me2bpy)2] · Me2bpy ( 1 ) and [Co(4,4′‐oba)(Me2bpy)] ( 2 ) were hydrothermally synthesized and structurally characterized by elemental analysis, IR spectroscopy, TG, and single‐crystal X‐ray diffraction [1,3‐H2bdc = benzene‐1,3‐dicarboxylic acid, H2oba = 4,4′‐oxybis(benzoic acid) Me2bpy = 4,4′‐dimethyl‐2,2′‐bipyridine]. Compound 1 crystallizes in the orthorhombic system, space group P212121, with a = 23.371(5), b = 14.419(3), and c = 14.251(3) Å. Compound 2 crystallizes in the monoclinic system, space group P21/c, with a = 7.4863(15), b = 18.272(4), c = 16.953(5) Å, and β = 107.44(3)°. The crystal structure of complex 1 is a wave‐like layer with central Mn2+ atoms bridged by 1,3‐bdc ligands, whereas the structure of compound 2 presents a ladder chain of hexacoordinate Co2+ atoms, in which the metal atoms are bridged by 4,4′‐oba ligands and decorated by Me2bpy ligands. The two compounds are further extended into 3D supramolecular structures through π–π stacking interactions. Additionally, the compounds show intense fluorescence in solid state at room temperature. |
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Keywords: | Metal‐organic coordination polymers Dicarboxylic acid 4,4′ ‐Dimethyl‐2,2′ ‐bipyridine Crystal structure Fluorescence |
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