物理化学学报 >> 2001, Vol. 17 >> Issue (01): 87-90.doi: 10.3866/PKU.WHXB20010119

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钆(Ⅲ)混合阴离子配合物的电子顺磁共振谱

王国平;朱龙观   

  1. 浙江大学化学系,杭州 310027
  • 收稿日期:2000-05-15 修回日期:2000-08-07 发布日期:2001-01-15
  • 通讯作者: 朱龙观 E-mail:chezlg@emb.zju.edu.cn

EPR Properties of Novel Quaternary Mixed Anion Complexes of Gadolinium(Ⅲ)

Wang Guo-Ping;Zhu Long-Guan   

  1. Department of Chemistry,Zhejiang University,Hangzhou 310027
  • Received:2000-05-15 Revised:2000-08-07 Published:2001-01-15
  • Contact: Zhu Long-Guan E-mail:chezlg@emb.zju.edu.cn

关键词: 钆(Ⅲ), 四元混合阴离子配合物, 电子顺磁共振谱

Abstract: EPR spectra of three new quaternary gadolinium complexes(I:[Gd(C6H5COO)2(NO3)(bipy)]2,Ⅱ:[Gd(mCH3C6H4COO)2(NO3)(phen)]2 and Ⅲ:[Gd(pCH3C6H4COO)(NO3)(phen)]2) with mixed anion ligands in polycrystalline powders and solutions have been investigated at different temperatures and solvents.New behavior of EPR spectra of complex Ⅲ was first observed in polycrystalline powder at 77K and three types of EPR spectra for three complexes,symmetry resonance spectrum for the complex Ⅱ,U spectrum for the complex Ⅲ,and asymmetry resonance spectrum for the complex I.The relationship of EPR features between the crystalfield strength in the complexes and local symmetry around Gd(Ⅲ) was discussed.The crystalfield parameters b20 and asymmetry parameters λ′ of the complexes I and Ⅲ were estimated.

Key words: Gadolinium(Ⅲ), Quaternary mixed anion complex, EPR spectrum