两种苯磺酸铜配合物的结构及催化性能研究

Study on the structure and catalytic property of two copper benzenesulfonate complexes

硝酸铜分别与对氨基苯磺酸钠和苯磺酸钠反应,合成了对氨基苯磺酸铜[Cu(p-NH_(2)C_(6)H_(4)SO_(3))_(2)(H_(2)O)_(2)]·2H_(2)O(配合物1)和苯磺酸铜[Cu(H_(2)O)_(6)](C_(6)H_(5)SO_(3))_(2)(配合物2)。通过红外光谱(IR)、热重分析(TG)、单晶X-射线衍射(X-ray)、粉末X-射线衍射(PXRD)、扫描电镜(SEM)和比表面积分析(BET)技术对配合物的结构、组成及热稳定性进行了表征,确定了分子结构及表面形貌。并以Biginelli反应为探针,考察了配合物的催化性能,实验证明,配合物1和2均具有催化活性,且配合物2的催化效果优于配合物1(CCDC∶1∶2123933;2∶2124071)。

Copper p-aminobenzenesulfonate[Cu(p-NH_(2)C_(6)H_(4)SO_(3))_(2)(H_(2)O)_(2)]·2H_(2)O(complex 1)and copper benzenesulfonate[Cu(H_(2)O)_(6)](C_(6)H_(5)SO_(3))_(2)(complex 2)were synthesized by the reaction of copper nitrate with sodium p-aminobenzenesulfonate or sodium benzenesulfonate,respectively.The structure,composition and thermal stability of the complexes were characterized by infrared spectroscopy,thermogravimetric analysis,X-ray single crystal diffraction,powder X-ray diffraction,scanning electron microscopy and specific surface area analysis.The molecular structure and surface morphology were confirmed.Then,the Biginelli reaction was used as a probe to investigate the catalytic performance of two complexes.The experimental results showed that both complex 1 and 2 had catalytic activity,and the catalytic effect of the complex 2 was superior to the complex 1.