Syntheses, Structures and Fluorescent Properties of Copper(II) and Manganese(II) Helical Complexes Bridged by 4,4'-Dipyridylsulfide |
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作者姓名: | LI Jun-Xia DU Zhong-Xiang |
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作者单位: | College of Chemistry and Chemical Engineering,Luoyang Normal University, Luoyang, Henan 471022, China |
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基金项目: | This work was supported by the doctor scientific research start-up fund (No. 10001076) of Luoyang Normal University. |
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摘 要: | Two isostructural helical coordination polymers, {Cu(dps)2(Hssa)-(H2O)2]·3H2O}n (1) and {Mn(dps)2(Hssa)(H2O)2]·2H2O}n (2), have been synthesized by the solvothermal reaction of dps and H3ssa with CuCl2 or Mn(CH3COO)2 (dps = 4,4'-dipyridylsulfide, H3ssa = 5-sulfosalicylic acid). Both compounds crystallize in monoclinic, space group P21/n. In either complex, the central metal ion (CuII for compound 1 and MnII for compound 2) is surrounded by one Hssa2ˉ ligand, two coordinated aquas and three dps molecules with a N3O3 donor set in a distorted octahedral coordination geometry. Half of the dps is monodentate and another half acts as μ2-bridging ligands. It is through the bridging function of dps that the neighbouring metal centers are connected and a one-dimensional helical structure of compound 1 or 2 forms. Fluorescence studies indicate that compounds 1 and 2 have blue emission bands centered at 403 and 405 nm, respectively.
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关 键 词: | helical complex copper manganese 4 4’-dipyridylsulfide crystal structure fluorescence |
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