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.
出处
《福建农林大学学报（自然科学版）》
CSCD
北大核心
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)
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
pyridine-3-carboxylic acid copper （copper nicotinate）
pyridine-2-carboxylic acid copper （copper picolinate）
coordination structure
bidentate chelate compoud
