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  • 1 Centre de Recherches Nucléaires et Université Louis Pasteur Laboratoire de Chimie Nucléaire B.P. 20 67037 Strasbourg, Cedex France
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Abstract  

The rate constants for the reactions of positronium with I 3 , Br, and I in dimethylsulphoxide (DMSO) and for I 3 in water have been determined, and the orthopositronium lifetime variations have been used for studying polyhalide formation in the (I2+Br)/DMSO system. It is found that the formation of more than one polyhalide is needed to account for the data. On basis of this new evidence, previous results in methanol and in DMSO are re-examined. Besides the primary I2X (X: halide), I2X 22− complexes have to be invoked. Trial absorption measurements confirm the presence of solvolysis equilibria for I2 in DMSO. Taking these facts into account, much higher, albeit poorly defined, values than previously reported are found for the I2X formation constants. The reliable Kc values deduced are 28M−1, 0.57M−1 and 2.5M−1 respectively for I2Cl, I2Cl 22 and I2Br 22− in methanol, and 1.4M−1 and 0.8M−1, respectively for I2Cl 22− and I2Br 22− in DMSO.

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  • Impact Factor (2019): 1.137
  • Scimago Journal Rank (2019): 0.360
  • SJR Hirsch-Index (2019): 65
  • SJR Quartile Score (2019): Q3 Analytical Chemistry
  • SJR Quartile Score (2019): Q3 Health, Toxicology and Mutagenesis
  • SJR Quartile Score (2019): Q2 Nuclear Energy and Engineering
  • SJR Quartile Score (2019): Q3 Pollution
  • SJR Quartile Score (2019): Q3 Public Health, Environmental and Occupational Health
  • SJR Quartile Score (2019): Q3 Radiology, Nuclear Medicine and Imaging
  • SJR Quartile Score (2019): Q3 Spectroscopy
  • Impact Factor (2018): 1.186
  • Scimago Journal Rank (2018): 0.408
  • SJR Hirsch-Index (2018): 60
  • SJR Quartile Score (2018): Q2 Nuclear Energy and Engineering
  • SJR Quartile Score (2018): Q2 Pollution

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
4
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)