无溶剂法合成氨基酸水杨醛席夫碱锌的配合物  

Synthesis of Zinc(Ⅱ) Complexes with Schiff Base Ligands Derived from Salicylaldehyde and Amino Acids by Solvent-free Method

作　　者：钟勤[1] 钟万[1] 钟国清[1] 张艳[1] 

机构地区：[1]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,西南科技大学材料科学与工程学院,四川绵阳621010

出　　处：《精细化工》2011年第5期471-474,共4页Fine Chemicals

基　　金：四川省教育厅资助重点科研项目(10ZA016)~~

摘　　要：以L-丙氨酸或L-亮氨酸及水杨醛、乙酸锌为原料,通过无溶剂一步法合成了氨基酸水杨醛席夫碱锌(Ⅱ)配合物[ZnL(H2O)].nH2O(L=sal-ala,sal-leu),用EDTA滴定法、元素分析、红外光谱、X射线粉末衍射、热分析等手段对配合物的组成和结构进行了表征。结果表明,锌分别与席夫碱配体中的亚氨基氮、羧基氧、酚羟基氧以及水分子中的氧形成了配位数为4的配合物,其热分解包括失水、配体的氧化分解过程,最后完全分解为氧化锌。Zinc（Ⅱ） complexes of amino acids Schiff bases was synthesized by one-step solvent-free reaction with L-leucine or L-alanine,salicylaldehyde and zinc acetate as base materials.The composition and structures of the complexes were characterized by method of EDTA titration,elemental analysis,IR spectrum,X-ray powder diffraction and TG-DSC analysis.The composition of the two complexes is [ZnL（H2O）]·nH2O（L=sal-ala,sal-leu）.Infrared spectra and thermal decomposition process of the complexes show the presence of coordination water molecules.The zinc ion is coordinated through the Schiff base ligands as terdentate with O,O and N donors from carboxylic,phenolic and imino groups,and O donors from water molecule respectively.The coordination number of zinc ion is four.Thermal decomposition of the complexes proceeds in several stages： dehydration,oxidation pyrolysis of the ligands,and the final residues is zinc oxide.

关 键 词：氨基酸席夫碱 水杨醛 锌配合物 无溶剂法 表征 医药与日化原料 

分 类 号：TQ132.4[化学工程—无机化工] O614.24[理学—无机化学]