吡啶羧酸与铜(Ⅱ)螯合物的合成及结构表征  

Preparation and coordination structure of copper(Ⅱ) complexes of pyridine-3-carboxylic acid and pyridine-2-carboxylic acid

作　　者：李清禄[1] 陈强[2] 黄志坚[2] 李建生[2] 蔡碧琼[1] 

机构地区：[1]福建农林大学生命科学学院 [2]福建农林大学动物科技研究所,福建福州350002

出　　处：《福建农林大学学报（自然科学版）》2007年第3期316-319,共4页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：福建省自然科学基金资助项目(B0510012);福建省教育厅资助项目(JA04189)

摘　　要：合成的吡啶-3-羧酸(烟酸)铜(Ⅱ)配合物和吡啶-2-羧酸(吡啶甲酸)铜(Ⅱ)配合物,通过元素分析、红外光谱和粉末X-衍射等对其配位结构进行表征.结果表明,在各种不同试验条件下,合成的烟酸铜和吡啶甲酸铜,其配体均通过吡啶氮和羧基氧与铜(Ⅱ)同时配位形成双齿螯合物.烟酸铜具有2个六员螯合环[Cu(Nic)2,Nic-为烟酸根],属单斜长方体晶系;吡啶甲酸铜具有2个五员螯合环[Cu(Pic)2,Pic-为吡啶甲酸根],属三斜长方体晶系.The copper （ Ⅱ ） complexes of pyridine-3-carboxylic acid （nicotinic acid） and pyridine-2-carboxylic acid （picolinic acid） were synthesized, and their structures were characterized by elemental analysis, infrared spectrum, powder X-ray diffraction and so on. The results show that under experimental conditions, the ligands of synthesized copper nicotinate and copper picolinate are coordinated simultaneity with copper （ Ⅱ ） via the nitrogen of pyridine group and an oxygen of carboxylic acid group to form hi- dentate chelates. The crystal of copper nicotinate with two six-membered chelate rings belongs to monoclinic system, while that of copper picolinate having two five-membered chelate rings is of triclinic system.

关 键 词：吡啶-3-羧酸(烟酸)铜 吡啶-2-羧酸(吡啶甲酸)铜 配位结构 双齿螯合物 

分 类 号：O614.121[理学—无机化学]