| Crystal Structure of a Nickel(II) Complex with Asymmetric _L-Histidine Ligand |
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| 作者姓名： | JIN Yi CHE Yun-Xia ZHENG Ji-Min② |
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| 作者单位： | Department of Chemistry，Nankai University，Tianjin 300071，China |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China (No. 50572040) |
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| 摘 要： | 1 INTRODUCTION Metal-amino acid complexes are involved in the process of some important metal transport in humans. These complexes and their derivatives are important due to their biochemical and pharmacological pro- perties1～5]. Nickel(II), as a Jahn-Teller center, when complexed with amino acids, adopts a variety of coordination geometries from distorted square plane, flattened tetrahedron and distorted square pyramid to distorted octahedron as observed in structures reported6, 7], …
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Crystal Structure of a Nickel(II) Complex with Asymmetric _L-Histidine Ligand |
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| Abstract: | A novel nickel(II) complex with L-histidine has been synthesized and solved by single-crystal X-ray diffraction analysis at physiological pH. The title complex (C7H16NiN4O6S, Mr = 343.01) crystallizes in monoclinic, space group P21 with a = 7.2194(7), b = 7.5968(7), c = 12.2797(11) , β = 93.3110(10)o, V = 672.35(11) 3, Z = 2, Dc = 1.694 g/cm3, F(000) = 356, μ(MoKα) = 1.626 mm-1, T = 293(2) K, the final R = 0.0184 and wR = 0.0426 for 2207 observed reflections with I > 2((I). The complex provides insights into a possible structural arrangement between nickel (II) and L-histidine which may be physiologically important and abundantly present in biological systems. |
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| Keywords: | crystal structure synthesis L-histidine nickel physiological pH |
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