| Structure and Photosynthetic Mimicking of Bis(2,6-bis(benzimidazol-2-yl)pyridine)manganese(II) |
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| 作者姓名： | 施伟 李伟 沈萍萍 徐英凯 王红梅 石梅 刘扬 |
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| 作者单位： | State Key Laboratory for Structural Chemistry of Unstable and Stable Species，Center of Molecular Science，Institute of Chem~istry，Chinese Academic of Sciences，Beijing 100080，China，State Key Laboratory for Structural Chemistry of Unstable and Stable Species，Center of Molecular Science，Institute of Chem~istry，Chinese Academic of Sciences，Beijing 100080，China State Key Laboratory of Pharmaceutical Biotechnology，Department of Biochemistry，Nanjing University，Nanjing，Jiangsu 210008，China，State Key Laboratory of Pharmaceutical Biotechnology，Department of Biochemistry，Nanjing University，Nanjing，Jiangsu 210008，China，State Key Laboratory for Structural Chemistry of Unstable and Stable Species，Center of Molecular Science，Institute of Chem~istry，Chinese Academic of Sciences，Beijing 100080，China，State Key Laboratory for Structural Chemistry of Unstable and Stable Species，Center of Molecular Science，Institute of Chem~istry，Chinese Academic of Sciences，Beijing 100080，China，State Key Laboratory for Structural Chemistry of Unstable and Stable Species，Center of Molecular Science，Institute of Chem~istry，Chinese Academic of Sciences，Beijing 100080，China，State Key Laboratory for Structural Chemistry of Unstable and Stable Species，Center of Molecular Science，Institute of Chem~istry，Chinese Academic of Sciences，Beijing 100080，China |
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| 基金项目： | ProjectsupportedbytheMajorStateBasicResearchDevelopmentProgram (No .G19980 10 10 0 )andtheNationalNaturalScienceFoun
dationofChina (Nos .3 9890 3 90and 3 9870 2 0 8) |
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| 摘 要： | Introduction Manganeseionsplayanimportantroleinthelight in ducedoxidationofwatertomolecularoxygeninphotosys temII (PSII)ofgreenplants.1 3Inrecentyears ,man ganesecomplexesofpolypyridineligands ,suchasbipyri dine ,1,10 phenanthrolineand 2 ,2′:6′,2″ terpyridine ,havehadconsiderableattentionasthecomplexesformedareusefulmodelsformanganese containingbimolecu lars .4 6 Therefore ,synthesisandcharacterizationofman ganeseinitsvariousoxidationstates ,withvariousligandtypesandnuclearities ,hav…
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Structure and Photosynthetic Mimicking of Bis(2,6-bis(benzimidazol-2-yl)pyridine)manganese(II) |
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| Abstract: | Mn(bzimpy) 2 (1) bzimpy=2,6 bis(benzimidazol 2 yl)pyridine], a mononuclear manganese(II) complex, was synthesized by the reaction of Mn(OOCMe) 2 with bzimpy in absolute ethanol. The complex was structurally characterized by elemental analysis, cyclic voltammetry, and X ray crystallography. In the complex, the manganese nitrogen distances were different, and the geometry and the metal ion environment showed the distortion. The cyclic voltammetric measurements have been performed to assess its redox characteristics. The presence of oxidation wave at +0.62 V and +0.81 V vs. SCE or +0.8 V and +1.0 V vs. NHE suggested that this complex could catalyze the oxidation of water, therefore, simulate the water oxidizing complex (WOC) of photosystem II (PS II). The measurements of photoreduction of 2,6 dichlorophenolindophenol (DCPIP), and oxygen evolution in the manganese depleted and the complex 1 reconstituted PS II preparations just support our conjecture. |
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| Keywords: | bis(benzimidazol 2 yl)pyridine (bzimpy) crystal structure photosynthetic mimiking |
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