基于1⁃(3,5⁃二羧基苄基)⁃3,5⁃吡唑二羧酸的镍(Ⅱ)配位聚合物的合成、结构、磁性和光催化性质

Synthesis,Structure,Magnetic and Photocatalytic Properties of Nickel(Ⅱ)Coordination Polymer Based on 1⁃(3,5⁃Dicarboxybenzyl)⁃1H⁃pyrazole⁃3,5⁃dicarboxylic Acid Ligand

用水热法合成了一个新的镍配位聚合物{[Ni2(L)(bib)1.5(H2O)4]·3H2O}n (1)(H4L=1-(3,5-二羧基苄基)-3,5-吡唑二羧酸,bib=1,4-双(1-咪唑基)苯),通过单晶X射线衍射、元素分析和热重分析等方法对其结构进行表征。结构分析表明配合物1具有三维网状结构。通过变温磁化率测量发现,配合物1中的Ni(Ⅱ)离子之间存在反铁磁相互作用。另外,光催化实验表明,配合物1对亚甲基蓝污染物的光催化降解效率达到了82.7%。

A new coordination polymer{[Ni2(L)(bib)1.5(H2O)4]·3H2O}n(1)(H4L=1‑(3,5‑dicarboxybenzyl)‑1H‑pyrazole‑3,5‑dicarboxylic acid,bib=1,4‑bis(1‑imidazolyl)benzene)was synthesized by hydrothermal method and characterized by single‑crystal X‑ray diffraction,elemental analyses and thermogravimetric analysis.Complex 1 features a 3D network structure.The variable temperature magnetic susceptibility measurements reveal that there are antiferromagnetic interactions between the Ni(Ⅱ) ions in complex 1.In addition,photocatalytic experiments indicated that complex 1 exhibited high photocatalytic activity up to 82.7%for the degradation of methylene blue pollutant.CCDC:2030837.