高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (5): 796.

• 研究论文 • 上一篇    下一篇

Gd(Ⅲ)三元配合物EPR波谱研究

成义祥1, 张征林1, 徐元植2   

  1. 1. 东南大学化学化工系, 南京 210096;
    2. 浙江大学玉泉校区材料科学与化工学院, 杭州 310027
  • 收稿日期:1999-09-08 出版日期:2001-05-24 发布日期:2001-05-24
  • 通讯作者: 成义祥(1966年出生),男,博士,副教授,从事稀土功能配合物合成、结构与性质研究.
  • 基金资助:

    国家重大基础研究专项经费(批准号:1999022209)资助

Studies on EPR Spectra of Gd(Ⅲ) Ternary Complexes

CHENG Yi-Xiang1, ZHANG Zheng-Lin1, XU Yuan-Zhi2   

  1. 1. Department of Chemistry and Chemical Engineering, Southeast Universities, Nanjing 210096, China;
    2. College of Materials Scienceand Chemical Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:1999-09-08 Online:2001-05-24 Published:2001-05-24

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摘要： 对Gd(Ⅲ)的三元配合物室温和低温的固体粉末以及低温THF溶液EPR波谱的研究发现,Gd(Ⅲ)三元配合物固体粉末在室温和低温EPR波谱各共振吸收峰差异不大,但在低温THF溶液中EPR波谱出现超精细分裂,甚至存在超超精细分裂.Gd(Ⅲ)三元配合物随协同配体改变,EPR各共振吸收峰位置、强度和数目均存在较大变化,且不对称参数λ随协同配体不同而改变;大多数Gd(Ⅲ)三元配合物表现“U”谱特征.

关键词: 钆, 电子顺磁共振波谱, &ldquo, U&rdquo, 谱, 三元配合物

Abstract: Gd(Ⅲ) ternary complexes of the solid powder and THFsolution have been investigated by EPRspectra. The EPRspectra of Gd(Ⅲ) ternary complexes have many differences due to the change of the coordinated synergic agents. Resonance peaks of the solid powder complexes don't show an obvious difference between room temperature and liquid nitrogen, but solution EPRspectra of Gd(Ⅲ) ternary complexes in the liquid nitrogen shows a superfine splitting, fine splitting and super-hyperfine splitting. Most Gd(Ⅲ) complexes show prominent “U” spectrum feature. It results from the EPRspectra that the strength of crystal field of Gd(Ⅲ) ternary complexes belongs to the intermediate CFcategory, the asymmetry parameter λ ' is changed with the variation of the synergic agents.

Key words: Gadolinium, Electron paramagnetic resonance, “U&rdquo, spectrum, Ternary complex

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