The First Hexa-coordinated Tetranuclear Nickel Complex {[Ni(en)2]4[H4L]}(ClO4)4·7H2O with Tetrakis-bidentate Oxamato Bridge |
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| Authors: | Mao Liang Li-Na Zhu Shi-Xiong Liu Dai-Zheng Liao Prof. Zong-Hui Jiang Shi-Ping Yan Peng Cheng |
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| Affiliation: | 1. Tianjin / China, Nankai University, Department of Chemistry;2. Fuzhou / China, Fuzhou University, Department of Chemistry;3. Tianjin / China, Nankai University, Department of Chemistry Peking / China, Peking University, State Key Laboratory of Rare Earth Material Chemistry and Applications |
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| Abstract: | The first tetranuclear nickel complex with the oxamato ligand, {[Ni(en)2]4[H4L]}(ClO4)4·7H2O ( 1 ) (L = N, N′, N″, N‴-methanetetrayltetrakismethylenetetrakis (oxamato)), has been prepared and determined by single-crystal X-ray analysis. 1 crystallizes in the tetragonal space group I41/a, with a = 15.2744(9), c = 31.3748(2) Å and Z = 4. Each nickel (II) ion is in a distorted octahedral donor atom environment, which comprises four nitrogen atoms of two en molecules and two oxygen atoms of oxamato bridge. The shape of the entity looks like a propeller. The temperature-dependent magnetic susceptibilities were analyzed by the Curie-Weiss law; the following values were found C = 4.36 cm3 K mol-1, θ = -24.7 K, respectively. |
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| Keywords: | Nickel Tetranuclear complexes Oxamato ligand |
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