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M. Schädel, W. Brüchle, E. Jäger, B. Schausten, R. Wirth, W. Paulus, Jens Volker Kratz, E. Strub, S. Zauner, Y. Nagame
Aqueous Chemistry of Seaborgium (Z = 106)
Seaborgium was previously eluted from cation exchange columns like its homologs molybdenum and tungsten in 0.1 M HNO3/5 × 10–4 M HF. Its chemical form was presumably a neutral or anionic oxygen containing fluoride. However, species containing no fluoride such as SgO2–4 could not be excluded. In order to verify that fluoride complexing played a role in the previous study, another series of cation exchange separations was performed with 7-s 265Sg in which 0.1 M HNO3 without HF was used as eluent. 265Sg and 169W were produced simultaneously by bombarding a 248Cm target containing Gd with 124 MeV 22Ne ions. While 169W was eluted from the cation exchange columns with an average chemical yield of 59%, no 265Sg decay chain was detected in the eluent even though about 5 αα-correlations were expected. This non-tungsten like behaviour of seaborgium is tentatively attributed to its lower tendency to hydrolyze compared to that of tungsten. In the previous experiments with seaborgium in the presence of fluoride ions, neutral or anionic fluoride complexes, e.g., SgO2F2 or SgO2F–3, were likely to be formed and were eluted from the cation exchange columns.
Radiochimica Acta, Oldenbourg Wissenschaftsverlag
Print ISSN: 0033-8230
Volume: 83, 03/1998
Pages: 163