室温固相法合成2-吡啶甲酸钴、镍配合物  

Synthesis and Characterization of Cobalt(Ⅱ) and Nickel(Ⅱ) Complexes of 2-Picolinic Acid by Room Temperature Solid-Solid Reaction

作　　者：李迪[1] 李春春[1] 钟国清[1] 顾梅[1] 陈东平[1] 

机构地区：[1]西南科技大学材料科学与工程学院四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地,四川绵阳621010

出　　处：《精细化工》2013年第3期320-323,共4页Fine Chemicals

基　　金：西南科技大学实验室开放基金资助项目(12xnkf10)~~

摘　　要：利用乙酸钴(Ⅱ)、氯化镍(Ⅱ)和2-吡啶甲酸为原料,采用室温固相法合成了2-吡啶甲酸钴(Ⅱ)、镍(Ⅱ)配合物M(C5H4NCOO)2.xH2O(M=Co,Ni;x=6,3),用EDTA配位滴定、元素分析、X射线粉末衍射、红外光谱和热分析等方法对产物进行组成和结构表征。结果表明,2-吡啶甲酸中的羧基氧原子和杂环氮原子及水分子参与配位,其热分解包括失水、配体的氧化分解过程,最后完全形成金属氧化物。The 2-picolinate complexes M（C5H4NCOO）2 · xH2O of cobalt（ Ⅱ ） and nickel（ Ⅱ ） were synthesized with cobalt acetate, nickel chloride and 2-pyridinecarboxylic acid as reactants by solid-state reaction at room temperature. The composition and structures of the complexes were characterized by means of EDTA titration, elemental analysis, FTIR spectrum, X-ray powder diffraction, thermogravimetric and differential thermal analysis. The results of characterization showed that cobalt （ Ⅱ ） and nickel（ Ⅱ ） were coordinated by the heterocyclic nitrogen atoms and carboxyl oxygen atoms of the ligands, and by the oxygen atoms from the water molecules, respectively. Thermal decomposition processes of the complexes included dehydration, oxidation and pyrolysis of the ligands, which were finally to give metallic oxide.

关 键 词：2-吡啶甲酸 钴配合物 镍配合物 室温固相合成 食品与饲料用化学品 

分 类 号：O614.81[理学—无机化学] TQ138.1[理学—化学]