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Moessbauer spectra of Eu(Ⅲ) and Gd(Ⅲ) complexes of phosphine oxides with chelating perchlorate

机译:欧盟(Ⅲ)和Gd(Ⅲ)复合物的Moessbauer光谱螯合螯合高氯酸盐

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The reaction of Ln(ClO_4)_3 · nH_2O with triphenylphosphine oxide (TPPO) in methanol has led to the formation of [Ln(ClO_4)_2(tppo)_4]ClO_4-MeOH (Ln = Nd, Eu, Gd, Dy, Yb), in which the perchlorate anion acts as a symmetric bidentate. The emission spectra of Eu(Ⅲ)-TPPO complexes, showing enhancement in the intensity due to the phenyl group, indicate an isotropic electron distribution for the nitrato complex [Eu(NO_3)_3(tppo)_2(EtOH)]. ~(151)Eu and ~(155)Gd Moessbauer spectra of the TPPO complexes also lead to the same conclusion.
机译:LN(CLO_4)_3·NH_2O与三苯基膦氧化物(TPPO)的反应导致[LN(CLO_4)_2(TPPO)_4] CLO_4-MEOH(LN = ND,EU,GD,DY,YB ),其中高氯酸盐阴离子充当对称的二齿。 Eu(Ⅲ)-TPPO复合物的发射光谱,显示由于苯基引起的强度增强表明亚硝酸盐复合物[EU(NO_3)_3(TPPO)_2(EtOH)]的各向同性电子分布。 〜(151)欧盟和〜(155)GD Moessbauer的TPPO复合物的光谱也导致得出相同的结论。

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