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化学学报
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化学学报 ›› 1990, Vol. 48 ›› Issue (3): 247-250. 上一篇    下一篇

研究论文

铒甘氨酸配位化合物和铒组氨酸配位化合物的EXAFS谱研究

朱年永;郑亦凡;吴新涛;陆坤权;赵雅琴   

  1. 中国科学院福建物质结构研究所;中国科学院物理研究所
  • 发布日期:1990-03-15

The extended x-ray absorption fine structure (EXAFS) studies of the complexes erbium (III)-glycine and erbium (III)-histidine

ZHU NIANYONG;ZHENG YIFAN;WU XINTAO;LU KUNQUAN;ZHAO YAQIN   

  • Published:1990-03-15

PDF

515

被引次数

6

本文用EXAFS谱研究了三个固体铒甘氨基酸配位化合物, 得到铒甘氨酸和铒组氨酸的第一配位层Er-O键长分别为2.35和2.32A, 配位数分别为8.3和8.0. 并进一步用EXAFS径向结构函数图, 讨论了与其结构类型的关系, 推测出铒氨基酸配位化合物晶体的所属可能结构类型。

关键词: 晶体结构, 精细结构, 甘氨酸, Ｘ射线吸收光谱法, 结构函数, 组氨酸, 铒络合物

Three solid erbium-amino acid complexes were studied by EXAFS. Among the 3 solid complexes, the erbium-serine complex Er2.(Ser)3.(ClO4)6.(dioxane)4.10H2O, which has been determine by x-ray crystallog., was used as the standard sample to extract the structural coefficients The relationship between the structural types of the complexes and the radial-structure-function (RSF) from EXAFS are discussed. Comparing the second peaks of the RSF, possible structures for the erbium-amino acid complexes were proposed.

Key words: CRYSTAL STRUCTURE, FINE STRUCTURE, GLYCINE, X-RAY ABSORPTION SPECTROMETRY, STRUCTURAL FUNCTIONS, HISTIDINE, ERBIUM COMPLEX

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