Syntheses and crystal structures of three Mn(II) complexes with 2-hydroxynicotinate |
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| Authors: | Yan-Feng Yue En-Qing Gao Chen-Jie Fang Chun-Hua Yan |
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| Institution: | a State Key Lab of Rare Earth Materials Chemistry and Applications & PKU-HKU Joint Lab in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China
b Shanghai Key Lab of Green Chemistry and Chemical Process Greening, East China Normal University, Shanghai 200062, China |
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| Abstract: | Three new Mn(II) complexes Mn(HnicO)2(H2O)2] (1), Mn2(HnicO)2SO4(H2O)2]n (2), and NaMn(HnicO)3]n (3) (H2nicO = 2-hydroxynicotinic acid) have been synthesized and determined by X-ray diffraction. For complex 1, the mononuclear units with two bidentate HnicO− ions and two water molecules are assembled into a 3D architecture via hydrogen bonding and π-π interactions. For 2, Mn(II) ions are connected by μ3-HnicO− and  bridging ligands, producing a 2D (6,3) coordination network. For 3, binuclear Na(I)-Mn(II) units with three carbonyl oxygen bridges are interlinked by carboxylate groups, resulting in a 3D 6-connected coordination network with distorted α-Po topology. The magnetic properties of 2 are discussed. |
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| Keywords: | Mn(II) complexes Hydrogen-bonding π-π interaction 2-Hydroxynicotinate Hydrothermal reactions Crystal structure |
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