Citation:
YANG Zai-Wen, AYGUL Naman, LIU Xiang-Rong, ZHAO Shun-Sheng, ZHAO Wei-Qin, YANG Shui-Lan. Structure of Copper Chelate of 2-Hydroxy-4-methylthiobutanoic Acid as Trace Mineral Additive in Animal Feeding[J]. Chinese Journal of Structural Chemistry,
2015, 34(1): 147-153.
doi:
10.14102/j.cnki.0254-5861.2011-0490
Structure of Copper Chelate of 2-Hydroxy-4-methylthiobutanoic Acid as Trace Mineral Additive in Animal Feeding
摘要:
The chelate complex of Cu2+ with 2-hydroxy-(4-methylthio)butanoate (MHA-H, the anion derived from the so-called methionine hydroxy-analogue, largely used in animal nutrition as a source of methionine, MHA) is an efficient, bioavailable trace mineral additive for animal feeding. The structure of MHA-H copper chelate was investigated by single-crystal X-ray diffraction. The crystal structure (C10H18CuO6S2, 1, monoclinic, space group P21/c, Z=2, a=16.158(4), b=4.9733(12), c=9.159(2)Å, β=104.786(4)°) exhibits that two MHA-H ligands coordinate with a CuⅡ ion to form a square-planar environment completed to an octahedron through interaction with carbonyl oxygens of neighboring molecules, which expand to constitute a two-dimensional sheet coordination network. And a separation between the hydrophilic and lipophilic moieties like micelles was found in the packing structure. X-ray powder diffraction and thermogravimetric analysis were used to study the phase purity of the bulk sample and thermostability of complex 1, respectively.
English
Structure of Copper Chelate of 2-Hydroxy-4-methylthiobutanoic Acid as Trace Mineral Additive in Animal Feeding
Abstract:
The chelate complex of Cu2+ with 2-hydroxy-(4-methylthio)butanoate (MHA-H, the anion derived from the so-called methionine hydroxy-analogue, largely used in animal nutrition as a source of methionine, MHA) is an efficient, bioavailable trace mineral additive for animal feeding. The structure of MHA-H copper chelate was investigated by single-crystal X-ray diffraction. The crystal structure (C10H18CuO6S2, 1, monoclinic, space group P21/c, Z=2, a=16.158(4), b=4.9733(12), c=9.159(2)Å, β=104.786(4)°) exhibits that two MHA-H ligands coordinate with a CuⅡ ion to form a square-planar environment completed to an octahedron through interaction with carbonyl oxygens of neighboring molecules, which expand to constitute a two-dimensional sheet coordination network. And a separation between the hydrophilic and lipophilic moieties like micelles was found in the packing structure. X-ray powder diffraction and thermogravimetric analysis were used to study the phase purity of the bulk sample and thermostability of complex 1, respectively.
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