三氯化一缬氨酸六水合稀土固体配合物的合成及红外光谱  

Syntheses and Infrared Spectra of Solid Complexes of Monovalino-Hexaquo-Rare Earth Chlorides

作　　者：马爱增[1] 李来明[1] 席时权[1] 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《应用化学》1995年第3期48-51,共4页Chinese Journal of Applied Chemistry

摘　　要：在水溶液中合成了Ｌｎ（Ｖａｌ）·Ｃｌ＿３·６Ｈ＿２Ｏ（Ｌｎ＝Ｌａ，Ｎｄ，Ｓｍ，Ｇｄ，Ｅｒ）．利用元素分析和容量滴定法确定了其组成。测定了配合物的红外光谱，对其主要红外吸收带进行了归属。红外光谱结果表明，缬氨酸以内盐的形式存在于配合物中，并通过羟基与稀土离子配位，６个水分子亦参与了配泣，推测Ｌａ和Ｎｄ配合物具有一维无限长锭结构，而Ｓｍ、Ｇｄ和Ｅｒ配合物为双核配合物．The title complexes Ln(Val)Cl3.6H2O( Ln=La,Nd,Sm,Gd,Er)have beensynthesized in aqueous solution。 The compositions of the complexes were determined by ele-mental analysis and EDTA titration。 The infrared spectra of the complexes were measuredwith principal spectral bands being assigned. The results showed that the valine moleculesare zwitterions in the complexes and coordinate to rare earth ions through carboxyl groups,and the six water molectiles coordinate to rare earth ion too。The La ang Nd complexes maybe one dimensional chain complexes of infinite length and the others dinuclear complexes.

关 键 词：稀土 缬氨酸 配合物 红外光谱 

分 类 号：O614.33[理学—无机化学]