Luminescence Study on the Inner‐Sphere Hydration Number of Lanthanide(III) Ions in Neutral Organo‐Phosphorus Complexes

作者：Ping Zhang; Takaumi Kimura; Zenko Yoshida

来源：Solvent Extraction and Ion Exchange, 2004, 22(6): 933-945.

DOI：10.1081/SEI-200037439

• Hydration
• Coordination sphere
• TRPO complexes

Time-resolved laser-induced fluorescence spectroscopy(TRLFS)was employed to determine the inner-sphere(i.e.,first coordination sphere)hydration number(WH,O)of lanthanide(HI)ions(Ln=Sm,Eu,Tb,and Dy)in the TRPO-dodecane/HNO_3(or HNO_3-NaNO_3)system under various conditions.In addition,the N_(H_2O)of Ln(III)in extracted complexes with octyl(phenyl)-N,N-diisobutylcarbamoylmethyl phosphine oxide(CMPO),dihexyl-N,N-diethylcarbamoylmethyl phosphonate(CMP),trioctyl phosphine oxide(TOPO),and tributyl phosphate(TBP)were also determined.The results show that there is no water molecule in the first coordination sphere of Ln(III)complexes,except for Sm(III)and Dy(III)in CMP complexes.

• 单位
  清华大学