| Co(Ⅱ)与甜菜碱类衍生物形成的两种配合物的结构和磁性特征 |
| Crystal Structures and Magnetic Properties of Two Co(Ⅱ) Coordination Compounds Based on Bidentate Betaine Derivatives |
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| 摘要: 合成了2种新的Co(Ⅱ)的配合物{[Co(L1)2(H2O)2](ClO4)2·4H2O}n(1)和{[Co(L2)2(H2O)4](ClO4)2·8H2O·L2}n(2)(L1=1,1'-(4,4'-二亚甲基联苯)二(1-吡啶鎓-3-羧酸盐),L2=1,1'-(4,4'-二亚甲基联苯)二(1-吡啶鎓-4-羧酸盐)),并且分别用红外光谱、热差分析、X射线粉末衍射和X射线单晶衍射表征了这两种化合物。晶体结构分析表明L1,L2,1和2分别属于P21/c,P21/c,P1和P1空间群。化合物1中的Co(Ⅱ)与L1配位形成二维的配位聚合物,2中的Co(Ⅱ)与L2配位形成独立的阳离子。二者的晶体结构都含有大量的氢键作用或者配位键形成的孔状结构。此外,磁性研究表明,1和2中都存在反铁磁性相互作用。 |
| 关键词: 甜菜碱衍生物 Co(Ⅱ)配合物 晶体结构 化学磁性 |
| 基金项目: |
| Abstract: Two new Co(Ⅱ) coordination compounds, namely {[Co(L1)2(H2O)2](ClO4)2·4H2O}n(1) and {[Co(L2)2(H2O)4](ClO4)2·8H2O·L2}n(2) have been synthesized based on bidentate betaine derivatives(L1=1, 1'-(4, 4'-bis(methylene) biphenyl) bis(1-pyridinium-3-carboxylate), L2=1, 1'-(4, 4'-bis(methylene) biphenyl) bis(1-pyridinium-4-carboxylate)), and have been characterized by infrared spectrum, thermogravimetric analysis, powder X-ray diffraction(PXRD) and single crystal X-ray diffraction method. Single crystal X-ray analyses revealed that L1, L2, 1 and 2 crystallize in space group P21/c, P21/c, P1 and P1, respectively.The Co(Ⅱ) ions in 1 coordinated with L1 molecules form 2D coordination polymer, the Co(Ⅱ) ions in 2 coordinated with L2 molecules are discrete cations.The crystal structures of both compounds exhibit large hydrogen bonded or coordinated pores.Magnetic measurements indicated that there exist antiferromagnetic interactions in compounds 1 and 2.CCDC:1439325, L1·3H2O·DMF; 1442802, L2·4H2O; 1439327, 1; 1439328, 2. |
| Keywords: bidentate betaine derivative Co(Ⅱ) coordination compound crystal structure chemomagnetism |
| 投稿时间：2015-12-23 修订日期：2016-02-27 |
| 摘要点击次数: 1865 |
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| 王学玲,李松林,刘雪佳.Co(Ⅱ)与甜菜碱类衍生物形成的两种配合物的结构和磁性特征[J].无机化学学报,2016,32(4):720-730. |
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