| Synthesis and Crystal Structure of a Novel 1D Magnesium （Ⅱ） Coordination Polymer Constructed by L-Cysteic Acid |
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| 作者单位： | LI Hai-Ye（College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, China） ;
LIAO Bei-Ling（College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, China） ;
JIANG Yi-Min（College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, China） ;
ZHANG Shu-Hua（College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, China） ;
LI Jun-Xia（College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, China） ; |
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| 基金项目： | This work was supported by the Natural Science Foundation of Guangxi Province （No. 0339034） and the Science Research Foundation of Guangxi Normal University |
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| 摘 要： | A novel coordination polymer Mg(L)(H2O)2]·H2O] (LH2=L-cysteic acid) has been synthesized and characterized by elemental analysis, IR and single-crystal X-ray diffraction.The crystal crystallizes in orthorhombic system, space group P212121, with a=5.962(3), b=11.224(6), c=13.664(7)(A), V=914.3(8) (A)3, Z=4, Mr=245.50, Dc=1.783 g/cm3,μ=0.445 mm-1,flack parameter=0.32(16), F(000)=512, the final R=0.0458 and wR=0.1172 for 1578 observed reflections with I ＞ 2σ(Ⅰ). The Mg(Ⅱ) atom shows an octahedral geometry defined by two carboxyl O atoms from two different L-cysteic acid ligands, one carboxyl O atom and one amino N atom from the adjacent ligand, and two aqua ligands. The Mg(Ⅱ) atoms are bridged by L-cysteic acid ligands, leading to a 1D infinite zigzag chain. In the structure there are extensive hydrogen bonds,through which the complex completes its 3D framework structure.
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| 关 键 词： | 镁（Ⅱ）配合物 L-磺基丙氨酸 合成 晶体结构 |
| 收稿时间： | 2006-11-21 |
| 修稿时间： | 2007-01-22 |
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