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（英文）  

Crystal Structures and Magnetic Properties of Two Co(Ⅱ) Coordination Compounds Based on Bidentate Betaine Derivatives

作　　者：王学玲[1] 李松林[1] 刘雪佳[2] 

机构地区：[1]天津大学理学院化学系,天津300354 [2]北京航空材料研究院,北京100095

出　　处：《无机化学学报》2016年第4期720-730,共11页Chinese Journal of Inorganic Chemistry

摘　　要：合成了2种新的Co(Ⅱ)的配合物{[Co(L1)2(H2O)2](Cl O4)2·4H2O}n(1)和{[Co(L2)2(H2O)4](Cl O4)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。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.

关 键 词：甜菜碱衍生物 Co(Ⅱ)配合物 晶体结构 化学磁性 

分 类 号：O614.812[理学—无机化学]