Jump to ContentJump to Main Navigation
Show Summary Details
In This Section

Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Ed. by Qaim, Syed M.

12 Issues per year

IMPACT FACTOR 2016: 1.271
5-year IMPACT FACTOR: 1.286

CiteScore 2016: 1.20

SCImago Journal Rank (SJR) 2015: 0.470
Source Normalized Impact per Paper (SNIP) 2015: 0.708

See all formats and pricing
In This Section
Volume 88, Issue 12 (Dec 2000)


On-line gas chromatographic studies of Rf, Zr, and Hf bromides

E.R. Sylwester / K.E. Gregorich / D.M. Lee / B. Kadkhodayan / A. Türler / J.L. Adams / C.D. Kacher / M.R. Lane / C. Laue / C.A. McGrath
Published Online: 2009-09-25 | DOI: https://doi.org/10.1524/ract.2000.88.12.837

The Heavy Element Volatility Instrument (HEVI), an on-line isothermal gas chromatography system, has been used to separate the volatile bromide compounds of the group 4 elements Zr and Hf and the transactinide Rf according to their volatilities, and to provide data on the gas phase chemical properties of very short-lived isotopes in amounts as low as a few atoms. For these studies 261Rf was produced via the 248Cm(18O, 5n) reaction. 165-167Hf was produced via the reaction natEu(19F, xn), and 85Zr was produced via the natCu(28Si, 3p3n) reaction. The half-life for 261Rf was measured to be 75±7 seconds.

A Monte Carlo code was used to deduce the enthalpy of adsorption (ΔHa) from the observed volatility and parameters of the chromatography system. The resulting adsorption enthalpies for the Zr, Hf, and Rf tetrabromides are: -108±5 kJ · mol-1, -113±5 kJ · mol-1 and -87±7 kJ · mol-1, respectively.

Volatilities of the group 4 bromides support the conclusion from previous results for the group 4 chlorides that Rf deviates from the trend expected by simple extrapolation of the properties of its lighter homologs in the periodic table. The group 4 bromides are also observed to be less volatile than their respective chlorides, as predicted by relativistic calculations.

About the article

Published Online: 2009-09-25

Published in Print: 2000-12-01

Citation Information: Radiochimica Acta, ISSN (Online) 2193-3405, ISSN (Print) 0033-8230, DOI: https://doi.org/10.1524/ract.2000.88.12.837. Export Citation

Citing Articles

Here you can find all Crossref-listed publications in which this article is cited. If you would like to receive automatic email messages as soon as this article is cited in other publications, simply activate the “Citation Alert” on the top of this page.

S. A. Cotton
Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem., 2002, Volume 98, Page 263
M. C. Alfonso, M. E. Bennett, and C. M. Folden
Journal of Radioanalytical and Nuclear Chemistry, 2015
E. Browne and J.K. Tuli
Nuclear Data Sheets, 2013, Volume 114, Number 8-9, Page 1041
Andreas Türler and Valeria Pershina
Chemical Reviews, 2013, Volume 113, Number 2, Page 1237
M. Schädel
Radiochimica Acta, 2012, Volume 100, Number 8-9, Page 579
Ch. E. Düllmann, K. E. Gregorich, G. K. Pang, I. Dragojevic, Robert Eichler, C.M. Folden III, M. A. Garcia, J. M. Gates, D.C. Hoffman, S. L. Nelson, Ralf Sudowe, and Heino Nitsche
Radiochimica Acta, 2009, Volume 97, Number 8
J. M. Gates, M. A. Garcia, K. E. Gregorich, Ch. E. Düllmann, I. Dragojević, J. Dvorak, R. Eichler, C. M. Folden, W. Loveland, S. L. Nelson, G. K. Pang, L. Stavsetra, R. Sudowe, A. Türler, and H. Nitsche
Physical Review C, 2008, Volume 77, Number 3
Matthias Schädel
Angewandte Chemie International Edition, 2006, Volume 45, Number 3, Page 368
H. Backe, F. P. Heßberger, M. Sewtz, and A. Türler
The European Physical Journal D, 2007, Volume 45, Number 1, Page 3

Comments (0)

Please log in or register to comment.
Log in