Fluorido Complex Formation of Element 104, Rutherfordium (Rf)
- 15 September 2011
- journal article
- research article
- Published by The Chemical Society of Japan in Bulletin of the Chemical Society of Japan
- Vol. 84 (9), 903-911
- https://doi.org/10.1246/bcsj.20110126
Abstract
We have investigated the cation-exchange behavior of element 104, rutherfordium (Rf), together with its lighter group-4 homologs Zr and Hf, and the tetravalent pseudo-homolog Th in HF/HNO3 mixed solution. The results, obtained on a one-atom-at-a-time scale, demonstrate that distribution coefficients (K-d) of RI in HF/0.10 M HNO3 decrease with increasing concentration of the fluoride ion [F-]. This resembles the behavior of the homologs, indicating the consecutive formation of fluorido complexes of Rf. We also measured the Kd values of Rf and the homologs as a function of the hydrogen ion concentration [H+] in the range of [F-] = 5.29 x 10(-7)-3.17 x 10(-6) M. The log K-d values decrease linearly with an increase of log[H+] with slopes between -2.1 and -2.5. This indicates that these elements are likely to form the same chemical compounds: mixture of [MF](3+) and [MF2](2+) (M = Rf, Zr, Hf, and Th) in the studied solution. It is also ascertained that the fluorido complex formation of Rf is significantly weaker than that of Zr and Hf, but it is stronger than that of Th.Keywords
This publication has 28 references indexed in Scilit:
- Fluoride Complexation of Element 104, Rutherfordium (Rf), Investigated by Cation-exchange ChromatographyChemistry Letters, 2008
- Chemistry of Superheavy ElementsAngewandte Chemie, 2006
- Experimental Identification of Spin-Parities and Single-Particle Configurations inand Its-Decay DaughterPhysical Review Letters, 2005
- Fluoride Complexation of Element 104, RutherfordiumJournal of the American Chemical Society, 2004
- Critical evaluation of the chemical properties of the transactinide elements (IUPAC Technical Report)Pure and Applied Chemistry, 2003
- Chloride complexation of element 104Journal of Inorganic and Nuclear Chemistry, 1980
- The Fluoride Complexes of Hafnium(IV). II. Determination of the Stability Constants by the Cation Exchange Method.Acta Chemica Scandinavica, 1967
- The Fluoride and Sulphate Complexes of Zirconium(IV).Acta Chemica Scandinavica, 1963
- Thorium Complexes with Chloride, Fluoride, Nitrate, Phosphate and Sulfate1Journal of the American Chemical Society, 1951
- The Aqueous Chemistry of ZirconiumJournal of the American Chemical Society, 1949