Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1990-1994  (2)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    On-line gas chemistry experiments with transactinide elements (1994)
    Springer
    Journal of radioanalytical and nuclear chemistry 183 (1994), S. 261-271 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Recent experiments are reviewed which used on-line isothermal gas chromatography techniques for studying chemical properties of transactinide elements. In these experiments the volatilities of chloride and bromide molecules in quartz columns were investigated. Measured chromatograms obtained with single molecules are shown to be correlated with the vapor pressure of the corresponding macroamounts. All existing data reveal that element 104 (rutherfordium) chloride has a volatility resembling very much those of the chlorides from the homologous elements hafnium and zirconium. For element 105 (hahnium) a surprisingly low volatility of the bromide compound, is found if compared to those of the corresponding bromides from the homologous elements tantalum and niobium. This latter experimental observation contrasts relativistic theoretical calculations which would predict a higher volatility for hahnium bromide if compared to those of tantalum and niobium bromides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037995
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Gas phase chromatography of halides of elements 104 and 105 (1992)
    Springer
    Journal of radioanalytical and nuclear chemistry 160 (1992), S. 327-339 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract On-line isothermal gas phase chromatography was used to study halides of261104 (T1/2=65 s) and262,263105 (T1/2=34 s and 27 s) produced an atom-at-a time via the reactions248Cm(18O, 5n) and249Bk(18O, 5n, 4n), respectively. Using HBr and HCl gas as halogenating agents, we were able to produce volatile bromides and chlorides of the above mentioned elements and study their behavior compared to their lighter homologs in Groups 4 or 5 of the periodic table. Element 104 formed more volatile bromide than its homolog Hf. In contrast, element 105 bromides were found to be less volatile than the bromides of the group 5 elements Nb and Ta. Both 104 and Hf chlorides were observed to be more volatile than their respective bromides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037108
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...