钕钇异核谷氨酸配合物的合成及晶体结构  

Synthesis and Crystal Structure of a Heteronuclear Complex of Neodymium-Yttrium with Glutamic Acid

作　　者：王晓青[1] 金天柱[1] 金庆日[1] 徐光宪[1] 章士伟[1] 

机构地区：[1]北京大学稀土化学研究中心,北京大学物理化学研究所

出　　处：《高等学校化学学报》1994年第8期1105-1109,共5页Chemical Journal of Chinese Universities

基　　金：国家攀登计划基金

摘　　要：在水溶液中合成发钕钇异核谷氨酸配合物［（Ｎｄ４／３Ｙ２／３（Ｇｌｕ）２（Ｈ２Ｏ）８）４］（ＣｌＯ４）１６．１０Ｈ２Ｏ的单晶，并测定其结构。晶体属单斜晶系，Ｐ２１空间群，晶胞参数：ａ＝１．１０３７（５）ｎｍ，ｂ＝１．６７１０（５）ｎｍ，ｃ＝２．００８６（１０）ｎｍ，β＝１０２．８０（４）°，Ｖ＝３．６１２（３）ｎｍ＾３，Ｚ＝１，Ｄｃ＝２．０７９ｇ／ｃｍ＾３。最终偏差因子Ｒ＝０．０５８。The complex,[Nd4/3Y2/3(Clu)_2(H2O)8)4](ClO4)(16)·10H2 was synthesized in aqueous solution and its crystal structure was determined by X-ray diffraction method. The crystal is monoclinic with space group P21.The cell parameters are:α=1.1037(5)nm,b=1. 6710(5)nm,c=2.0086(10)nm,β=102.80(4)°,V=3.612(3)nm￣3,Z=1,Dc=2.0799/cm￣3. The final R is 0.058.The complex molecule is an infinite layer built from binuclear polymer. For each central position, the occupation ratio of Nd and Y are 2/3 and 1/3,respectively.The carboxyl group of each glutamic acid that is far from NH2 is coordinated in terms of tridentate with the central ions by a bridging oxygen atom.So the coordination number is 9,forming a trigontetradecahedron arrangement.

关 键 词：谷氨酸 晶体结构 钕钇络合物 合成 

分 类 号：O614.3[理学—无机化学]