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Pulse Radiolysis of Aqueous Solutions of Aniline and Substituted Anilines

Abstract

The primary reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals with aniline and the aniline cation in aqueous solutions have been studied by the technique of pulse radiolysis and by determination of end products after y-radiolysis. Hydrogen atoms and hydrated electrons react with aniline under formation of the cyclohexadienyl type radical with absorption maximum at 355 nm and an extinction coefficient of 4100/M/cm. A similar radical formed by reaction of hydrogen atoms with the aniline cation has its absorption maximum at 31 0 nm and an extinction coefficient of 3200/M/cm. Hydrogen atoms react with the acid and neutral forms of aniline with rate constants of (1.3 +- 0.2 ) x 109/M/s and (2.9 +- 0.7) x 109/M/s, respectively. OH radicals react with aniline with a rate constant of (1.4 +- 0.3) x 1010/M/s under formation of the cyclohexadienyl radical with absorption maximum at 355 nm and the anilino radical with absorption maxima at 300 and 400 nm. The cyclohexadienyl radical decayed in a first order process with a rate constant of 1.4 x 105/s by elimination of NH{sub 3}, whereas the anilino radical disappeared in a second order reaction under formation of hydrazobenzene. O- radicals react with aniline at  More>>
Authors:
Publication Date:
Jul 01, 1971
Product Type:
Technical Report
Report Number:
AE-413
Resource Relation:
Other Information: 36 refs., 16 figs., 1 tab.
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; RADIOLYSIS; PULSED IRRADIATION; AQUEOUS SOLUTIONS; ANILINE
OSTI ID:
922481
Research Organizations:
AB Atomenergi, Nykoeping (Sweden)
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
TRN: SE0808026
Availability:
Commercial reproduction prohibited; OSTI as DE00922481
Submitting Site:
SWDN
Size:
44 pages
Announcement Date:
Jan 25, 2008

Citation Formats

Christensen, H C. Pulse Radiolysis of Aqueous Solutions of Aniline and Substituted Anilines. Sweden: N. p., 1971. Web.
Christensen, H C. Pulse Radiolysis of Aqueous Solutions of Aniline and Substituted Anilines. Sweden.
Christensen, H C. 1971. "Pulse Radiolysis of Aqueous Solutions of Aniline and Substituted Anilines." Sweden.
@misc{etde_922481,
title = {Pulse Radiolysis of Aqueous Solutions of Aniline and Substituted Anilines}
author = {Christensen, H C}
abstractNote = {The primary reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals with aniline and the aniline cation in aqueous solutions have been studied by the technique of pulse radiolysis and by determination of end products after y-radiolysis. Hydrogen atoms and hydrated electrons react with aniline under formation of the cyclohexadienyl type radical with absorption maximum at 355 nm and an extinction coefficient of 4100/M/cm. A similar radical formed by reaction of hydrogen atoms with the aniline cation has its absorption maximum at 31 0 nm and an extinction coefficient of 3200/M/cm. Hydrogen atoms react with the acid and neutral forms of aniline with rate constants of (1.3 +- 0.2 ) x 109/M/s and (2.9 +- 0.7) x 109/M/s, respectively. OH radicals react with aniline with a rate constant of (1.4 +- 0.3) x 1010/M/s under formation of the cyclohexadienyl radical with absorption maximum at 355 nm and the anilino radical with absorption maxima at 300 and 400 nm. The cyclohexadienyl radical decayed in a first order process with a rate constant of 1.4 x 105/s by elimination of NH{sub 3}, whereas the anilino radical disappeared in a second order reaction under formation of hydrazobenzene. O- radicals react with aniline at pH 13.3 with a rate constant of (3.1 +- 0.6) x 109 under formation of anilino radicals. The reaction of OH radicals with the aniline cation produced the anilino radical cation with a rate constant of (4.8 +- 0.8) x 109 . The absorption maximum was placed at 415 nm, The cyclohexadienyl type radical with absorption maximum at 350 nm was also found in aqueous solutions of 2-amino-1,3-dimethylbenzene but was not formed in solutions of N,N' -dimethylaniline}
place = {Sweden}
year = {1971}
month = {Jul}
}