DOI: 10.1246/bcsj.49.1250. Pulse Radiolysis of HgBr2 in Aqueous Solutions

Pulse Radiolysis of HgBr2 in Aqueous Solutions

10.1246/bcsj.49.1250

Crossref journal-article

Oxford University Press (OUP)

Bulletin of the Chemical Society of Japan (286)

Abstract

Abstract Pulse radiolysis of aqueous HgBr2 solutions was investigated in the range from visible to 260 nm. HgBr2 is reduced by eaq−, H, CO2−, and some alcohol radicals except t-butyl alcohol radical to yield a transient species, HgBr, having an absorption spectrum with a maximum at 350 nm (ε350=(4.3±0.2)×103 M−1 cm−1) . k(eaq−+HgBr2) was determined by the pseud-first order decay of eaq− observed at 500 nm as (4.0±0.3)×1010 M−1 s−1. The reactivities of the other reducing species toward HgBr2 were estimated to be in the order eaq−&gt;CO2−&gt;\dotEtOH≈i-\dotPr-OH&gt;MeOH by comparing the absorption yields of HgBr in equimolar HgBr2 solutions containing the parent substances of the respective species. HgBr was found to decay following a second order rate law (2k=(1.0±0.1)×1010 M−1 s−1), producing Hg2Br2. HgBr2 reacts also with the OH radical to give a transient species which shows a similar spectrum to that of Br2−. It is considered that the transient may be HgBr3 instead of Br2−.

Bibliography

Fujita, S., Horii, H., Mori, T., & Taniguchi, S. (1976). Pulse Radiolysis of HgBr2 in Aqueous Solutions. Bulletin of the Chemical Society of Japan, 49(5), 1250â1253.

Authors 4

Shin-ichi Fujita (first)
Hideo Horii (additional)
Toshiaki Mori (additional)
Setsuo Taniguchi (additional)

References 16 Referenced 14

Dates

Type	When
Created	19 years, 1 month ago (July 19, 2006, 10:45 p.m.)
Deposited	1 year, 7 months ago (Jan. 16, 2024, 11:16 p.m.)
Indexed	1 year, 6 months ago (Feb. 9, 2024, 11:23 a.m.)
Issued	49 years, 4 months ago (May 1, 1976)
Published	49 years, 4 months ago (May 1, 1976)
Published Online	19 years, 4 months ago (April 19, 2006)
Published Print	49 years, 4 months ago (May 1, 1976)

Funders 0

None

BibTeX

@article{Fujita_1976, title={Pulse Radiolysis of HgBr2 in Aqueous Solutions}, volume={49}, ISSN={1348-0634}, url={http://dx.doi.org/10.1246/bcsj.49.1250}, DOI={10.1246/bcsj.49.1250}, number={5}, journal={Bulletin of the Chemical Society of Japan}, publisher={Oxford University Press (OUP)}, author={Fujita, Shin-ichi and Horii, Hideo and Mori, Toshiaki and Taniguchi, Setsuo}, year={1976}, month=may, pages={1250–1253} }

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  "abstract": "<jats:title>Abstract</jats:title>\n               <jats:p>Pulse radiolysis of aqueous HgBr2 solutions was investigated in the range from visible to 260 nm. HgBr2 is reduced by eaq\u2212, H, CO2\u2212, and some alcohol radicals except t-butyl alcohol radical to yield a transient species, HgBr, having an absorption spectrum with a maximum at 350 nm (\u03b5350=(4.3\u00b10.2)\u00d7103 M\u22121 cm\u22121) . k(eaq\u2212+HgBr2) was determined by the pseud-first order decay of eaq\u2212 observed at 500 nm as (4.0\u00b10.3)\u00d71010 M\u22121 s\u22121. The reactivities of the other reducing species toward HgBr2 were estimated to be in the order eaq\u2212&amp;gt;CO2\u2212&amp;gt;\\dotEtOH\u2248i-\\dotPr-OH&amp;gt;MeOH by comparing the absorption yields of HgBr in equimolar HgBr2 solutions containing the parent substances of the respective species. HgBr was found to decay following a second order rate law (2k=(1.0\u00b10.1)\u00d71010 M\u22121 s\u22121), producing Hg2Br2. HgBr2 reacts also with the OH radical to give a transient species which shows a similar spectrum to that of Br2\u2212. It is considered that the transient may be HgBr3 instead of Br2\u2212.</jats:p>",
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