基于双功能配体2,2'∶6'2″-三联吡啶-4'-羧酸的三种铜(Ⅱ)配合物的合成、结构及性质 |
Synthesis, Structure and Properties of Three Copper(Ⅱ) Complexes Based on a Bifunctional Ligand 2,2': 6'2″-Terpyridine-4'-carboxylic Acid |
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摘要: 在溶剂热条件下,合成了2个铜的双核配合物[Cu(tpyc)(H2btc)]2(1)、[Cu2(tpyc)2(suc)(H2O)2](2)和配位聚合物{[Cu3(tpyc)3(OH)2(H2O)2]ClO4}n(3)(H3btc=1,3,5-benzenetricarboxylic acid,H2suc=succinic acid,Htpyc=2,2':6'2″-terpyridine-4'-carboxylic acid),分别用元素分析、红外光谱、X射线单晶衍射、粉末X射线衍射、热重及磁性分析对其进行了表征。结构分析表明,配合物1~3通过多重氢键作用形成三维超分子结构。磁性分析表明:配合物1的相邻Cu(Ⅱ)离子间存在铁磁耦合作用,配合物2的相邻Cu(Ⅱ)离子间存在反铁磁相互作用。 |
关键词: 双核配合物 配位聚合物 晶体结构 磁性 |
基金项目: 内蒙古自治区自然科学基金(No.2021LHMS02008)和2018年度内蒙古自治区留学人员创新创业启动支持计划项目资助。 |
Abstract: Two copper binuclear complexes[Cu(tpyc)(H2btc)]2 (1),[Cu2(tpyc)2(suc)(H2O)2] (2) and one coordination polymer {[Cu3(tpyc)3(OH)2(H2O)2]ClO4}n (3) (H3btc=1,3,5-benzenetricarboxylic acid, H2suc=succinic acid, Htpyc=2,2':6'2″-terpyridine-4'-carboxylic acid) have been synthesized under solvothermal conditions and characterized by elemental analysis, FT-IR spectroscopy, single-crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric analysis and magnetic analysis. Structural analysis suggests that complexes 1-3 display 3D supramolecular networks by multiple hydrogen-bonding interactions. Magnetic studies show that ferromagnetic coupling exists between Cu(Ⅱ) ions in complex 1, while antiferromagnetic interaction exists between Cu(Ⅱ) ions in complex 2. |
Keywords: binuclear complex coordination polymer crystal structure magnetic property |
投稿时间:2021-03-16 修订日期:2021-09-03 |
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贺春雨,杨小青,张雁红,姜爽.基于双功能配体2,2'∶6'2″-三联吡啶-4'-羧酸的三种铜(Ⅱ)配合物的合成、结构及性质[J].无机化学学报,2021,37(12):2267-2278. |
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Support information: 相关附件: file210129_Supporting_information_(Revised_0815).doc |
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