物理化学学报 >> 1991, Vol. 7 >> Issue (01): 102-105.doi: 10.3866/PKU.WHXB19910117

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Mg和Ca-PDTA金属络合物分子内过程的DNMR谱

宋瑞方; 巴勇; 张贵生; 李瑛; 裘祖文   

  1. 吉林大学理论化学研究所，长春
  • 收稿日期:1989-09-11 修回日期:1990-01-03 发布日期:1991-02-15
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The DNMR Spectra of Intramolecular Process in Mg-ang Ca-1,2-PDTA Complexes

Song Rui-Fang; Ba Yong; Zhang Gui-Sheng; Li Ying; Qiu Zu-Wen   

  1. The Institute of Theoretical Chemistry, Jilin University, Changchun
  • Received:1989-09-11 Revised:1990-01-03 Published:1991-02-15
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关键词: 钙、镁、锶、钡金属络合物, 分子内过程, 动态核磁共振

Abstract: The DNMR Spectra of the intramolecular processes occurring in Mg-, Ca-, Sr-and Ba-1,2-propylenediamine-tetraacetic acids(1,2-PDTA) are reported in this paper. The relative activation parameters have been obtained by performing computer line shape analysis. The experimental results show that the rates of the lone pair inversion of the two nitrogen atoms in these complexes are different, but their activation energies are similar. The nitrogen inversion process of these complexes belongs to twist mechanism through a trigonal prismatic intermediate.

Key words: Mg,Ca,Sr,Ba-1,2 PDTA, Intramolecular processes, DNMR