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Structure and dynamics of triethylamine and tripropylamine radical cations generated in AlPO4-5 by ionizing radiation: an EPR and MO study
Hiroshima Univ, Grad Sch Engn, Dept Appl Chem, Higashihiroshima 7398527, Japan Inst Nucl Chem & Technol, Dept Radiat Chem & Technol, PL-03195 Warsaw, Poland Linkoping Univ, Dept Phys & Measurement Technol, Chem Phys Lab, S-58183 Linkoping, Sweden.
Hiroshima Univ, Grad Sch Engn, Dept Appl Chem, Higashihiroshima 7398527, Japan Inst Nucl Chem & Technol, Dept Radiat Chem & Technol, PL-03195 Warsaw, Poland Linkoping Univ, Dept Phys & Measurement Technol, Chem Phys Lab, S-58183 Linkoping, Sweden.
Hiroshima Univ, Grad Sch Engn, Dept Appl Chem, Higashihiroshima 7398527, Japan Inst Nucl Chem & Technol, Dept Radiat Chem & Technol, PL-03195 Warsaw, Poland Linkoping Univ, Dept Phys & Measurement Technol, Chem Phys Lab, S-58183 Linkoping, Sweden.
Hiroshima Univ, Grad Sch Engn, Dept Appl Chem, Higashihiroshima 7398527, Japan Inst Nucl Chem & Technol, Dept Radiat Chem & Technol, PL-03195 Warsaw, Poland Linkoping Univ, Dept Phys & Measurement Technol, Chem Phys Lab, S-58183 Linkoping, Sweden.
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2001 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 3, no 9, 1611-1616 p.Article in journal (Refereed) Published
Abstract [en]

An EPR study was carried out to investigate both the structure and molecular dynamics of triethylamine (Et3N) and tripropylamine (Pr3N) radical cations generated in gamma -irradiated AlPO4-5 from neutral mother molecules incorporated as an organic template. Both Et3N+. and Pr3N+. radical cations were stable at 300 K and showed strongly temperature-dependent EPR spectral line-shapes in the temperature range from 77 to 300 K. The spectral change was successfully explained by assuming a two-site exchange model in which two inequivalent beta -hydrogens interchange their positions with each other. The experimental spectra were quantitatively analyzed by a simulation method using the exchange rate as a variable parameter. From an Arrhenius plot of the rate constants, activation energies of 9.1 and 11.4 kJ mol(-1) were evaluated for Et3N+. and Pr3N+. in AlPO4-5, respectively.

Place, publisher, year, edition, pages
2001. Vol. 3, no 9, 1611-1616 p.
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Engineering and Technology
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URN: urn:nbn:se:liu:diva-49307OAI: oai:DiVA.org:liu-49307DiVA: diva2:270203
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-12

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Lund, Anders

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