| Synthesis and Structural Characterization of Mononuclear Mn~(II) Picolilato Complex Mn(2-C_5H_4NCOO)_2(H_2O)_2.1/2CH_3CN |
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| 作者姓名： | 黄德光 朱红平 陈昌盛 刘秋田 |
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| 作者单位： | State Key Laboratory of Structural Chemistry，Fujian Institute of Research on the Structure of Matter，Chinese Academy of Sciences，Fuzhou，Fujian 350002，China |
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| 基金项目： | This work was supported by the State Key Basic Research and Development Plan (G1998010100)，NNSFC (No. 29733090 and 29973047) |
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| 摘 要： | 1 INTRODUCTION Manganese has been implicated as an essential part of the active center in various manganese enzymes. Various nuclearities have been observed from mononuclear atom in superoxide dismutase 1] to the tetranuclear atom of oxygen evolution in photosystem II2]. The manganese active centers in biological systems are surrounded by O and N coordination sphere3, 4]. Synthetic efforts have produced a great variety of Mn clusters with varying nuclearity and oxidation states. Si…
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Synthesis and Structural Characterization of Mononuclear Mn(II) Picolilato Complex Mn(2-C5H4NCOO)2(H2O)2·1/2CH3CN |
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| Abstract: | A Mn(II) picolilato complex Mn(2-C5H4NCOO)2(H2O)2?/2CH3CN 1 has been synthesized. Crystal of 1 is of monoclinic, space group C2/c with a = 25.6613(3), b = 8.6357(2), c = 16.8286(2) ? b = 122.835(1), V = 3133.47(9) ?, Mr=355.7, Dc = 1.508 g/cm3, F(000) = 1456, m = 0.874 cm1 and Z = 8. The final refinement gave R = 0.0362 and wR = 0.1096 for 2264 reflections (I > 2s(I)). The Mn(II) atom possesses distorted octahedral coordination geometry and the structural parameters around the Mn ion are close to those of other Mn analogues. Extensive hydrogen bonding interactions between carboxylate and H2O were observed making one-dimensional chains of the Mn monomers. |
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| Keywords: | manganese crystal structure 2-pyridinecarboxylic acid picolilato complex |
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