羟基蛋氨酸铜螯合物的制备与表征  

Preparation and Characterization of Copper Chelate of Hydroxymethionine

作　　者：吴治先[1] 李春春[1] 钟国清[1] 李迪[1] 陶美[1] 张文旭[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,绵阳621010

出　　处：《人工晶体学报》2014年第2期474-479,共6页Journal of Synthetic Crystals

基　　金：西南科技大学国家级大学生创新创业训练计划项目(201210619006);西南科技大学实验室开放基金资助项目(13xnkf01)

摘　　要：以羟基蛋氨酸和铜盐为主要原料,合成了两种羟基蛋氨酸铜螯合物,通过元素分析、红外光谱、X射线粉末衍射和热重差热分析等对其进行了组成和结构表征。红外光谱确证铜离子与羟基蛋氨酸中的羧基氧原子、羟基氧原子及甲硫基硫原子配位。结果表明,两种配合物均属于单斜晶系,Cu(MHA)·0.5H2O的晶胞参数为:a=0.9035nm,b=1.1739 nm,c=1.5515 nm,β=95.69°;Cu(HMHA)2的晶胞参数为:a=0.9698 nm,b=1.8483 nm,c=1.6677nm,β=95.58°。两种配合物在200℃以上开始分解,残余物主要为CuS。Two kinds of copper chelates of hydroxymethionine were synthesized using hydroxymethionine and copper salts as main raw materials. The compositions and structures of the complexes were characterized by elemental analysis, infrared spectra, X-ray powder diffraction, thermogravimetry and differential thermal analysis. The experimental results indicate that the copper ions were coordinated by carboxylic oxygen, hydroxyl oxygen and methyhhio sulfur from the hydroxymethionine ligand, respectively. The crystal structure of the complexes belonged to monoclinic system with the lattice parameters： a =0.9035 nm, b = 1. 1739 nm, c = 1. 5515 nm and 13 =95.69° for Cu（MHA） · 0.5H20, and a = 0.9698 nm, b = 1. 8483 nm, c = 1. 6677 nm and/3 = 95.58 ° for Cu （HMHA） 2, respectively. The possible pyrolysis reactions in the thermal decomposition process of the complexes, the experimental and calculated percentage mass loss were also given.

关 键 词：羟基蛋氨酸 铜螯合物 制备 表征 

分 类 号：S816.72[农业科学—饲料科学] O614.12[农业科学—畜牧学]