caa a22 4500 378930982 CHVBK 20180305123629.0 cr unu---uuuuu 161128e20040801xx s 000 0 eng 10.1524/ract.92.8.495.39274 doi (NATIONALLICENCE)gruyter-10.1524/ract.92.8.495.39274 Fluorescence and IR studies on the hydration state of lanthanides(III) and curium(III) in the complexes extracted with purified Cyanex301, Cyanex302 and Cyanex272 [Elektronische Daten] [Guoxin Tian, Takaumi Kimura, Zenko Yoshida, Yongjun Zhu, Linfeng Rao] The hydration number of lanthanides, Ln(III) (Ln = Sm, Eu, Tb, Dy), and Cm(III) in the extracted complexes with purified Cyanex301, Cyanex302 and Cyanex272 was investigated using time-resolved laser-induced fluorescence spectroscopy (TRLFS) and FT-IR spectroscopy. The results, in conjunction with the previous results on the Ln(III) and Am(III) complexes, provide insight into the composition of the extracted complexes. No difference has been observed in the hydration number or the composition between the Ln(III) and Cm(III) complexes with Cyanex302 or Cyanex272. The extracted complexes of Ln(III) and Cm(III) with Cyanex302 have the formula, ML(HL2)2·nH2O, where L stands for the anion of Cyanex302 and n=3-5. No water molecules are found in the first coordination shell of Ln(III) or Cm(III) complexes with Cyanex272. In contrast to the extraction with Cyanex302 or Cyanex272, the composition of the Ln(III) complexes is different from that of the Cm(III) complex in the extraction with Cyanex301. The Ln(III) complex with Cyanex301 has one or two H2O molecules with a molecular formula of LnL3·2H2O or HLnL4·H2O, where L stands for the anion of Cyanex301. However, the Cm(III) complex with Cyanex301 does not contain H2O with the molecular formula of HCmL4, in which only the 8 sulfur atoms from Cyanex301 coordinate to Cm(III). The results for Cm(III) agree with the previous data for Am(III) from EXAFS and IR measurements. © 2004 Oldenbourg Wissenschaftsverlag GmbH Laboratory techniques, experiments nationallicence Analytical chemistry nationallicence Inorganic chemistry nationallicence Tian Guoxin aut Kimura Takaumi aut Yoshida Zenko aut Zhu Yongjun aut Rao Linfeng aut Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 92/8/2004(2004-08-01), 495-499 0033-8230 92:8/2004<495 2004 92 ract https://doi.org/10.1524/ract.92.8.495.39274 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/ract.92.8.495.39274 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tian Guoxin aut NATIONALLICENCE 700 1- Kimura Takaumi aut NATIONALLICENCE 700 1- Yoshida Zenko aut NATIONALLICENCE 700 1- Zhu Yongjun aut NATIONALLICENCE 700 1- Rao Linfeng aut NATIONALLICENCE 773 0- Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 92/8/2004(2004-08-01), 495-499 0033-8230 92:8/2004<495 2004 92 ract CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter