The kinetics and mechanism of oxidation of hydroxylamine by iron(III)
(2002) In Journal of the Chemical Society. Dalton Transactions p.2548-2552- Abstract
- The kinetics of oxidation of hydroxylamine by iron() have been studied spectrophotometrically. The effects of pH, reactant and product concentrations led to two experimental rate expressions. The results obtained are consistent with a mechanism dependent on the relative iron(III)-to-hydroxylamine concentrations; an excess of iron() gives a stoichiometry of 2 : 1 for the total reaction and N2O as the oxidation product, whereas at equal amounts or excess of hydroxylamine the stoichiometry reduces to 1 : 1 with N-2 as the main product. In the latter case the rate expression d[ Fe(III)]/dt = k[Fe(III)](2) [NH2OH](2) /[Fe(III)](2) [H+](4) is obtained. The consistent mechanism identifies two pre-equilibria and the reaction of two different... (More)
- The kinetics of oxidation of hydroxylamine by iron() have been studied spectrophotometrically. The effects of pH, reactant and product concentrations led to two experimental rate expressions. The results obtained are consistent with a mechanism dependent on the relative iron(III)-to-hydroxylamine concentrations; an excess of iron() gives a stoichiometry of 2 : 1 for the total reaction and N2O as the oxidation product, whereas at equal amounts or excess of hydroxylamine the stoichiometry reduces to 1 : 1 with N-2 as the main product. In the latter case the rate expression d[ Fe(III)]/dt = k[Fe(III)](2) [NH2OH](2) /[Fe(III)](2) [H+](4) is obtained. The consistent mechanism identifies two pre-equilibria and the reaction of two different nitrogen-containing intermediates as the rate-determining step depending on the reactant ratios. The proposed mechanism does also involve the metal hydroxide complex Fe(OH)(2+), in agreement with previous results. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/336001
- author
- Bengtsson, Gösta ; Fronaeus, Sture LU and Bengtsson-Kloo, L
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of the Chemical Society. Dalton Transactions
- issue
- 12
- pages
- 2548 - 2552
- publisher
- Royal Society of Chemistry
- external identifiers
-
- wos:000176051000025
- scopus:0036017278
- ISSN
- 1472-7773
- DOI
- 10.1039/b201602h
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Biodiversity (432112235), Inorganic chemistry (ceased) (LUR000010)
- id
- 453bf86a-1058-4801-bbbd-279969d08ea3 (old id 336001)
- date added to LUP
- 2016-04-01 15:48:09
- date last changed
- 2022-04-22 17:33:05
@article{453bf86a-1058-4801-bbbd-279969d08ea3,
abstract = {{The kinetics of oxidation of hydroxylamine by iron() have been studied spectrophotometrically. The effects of pH, reactant and product concentrations led to two experimental rate expressions. The results obtained are consistent with a mechanism dependent on the relative iron(III)-to-hydroxylamine concentrations; an excess of iron() gives a stoichiometry of 2 : 1 for the total reaction and N2O as the oxidation product, whereas at equal amounts or excess of hydroxylamine the stoichiometry reduces to 1 : 1 with N-2 as the main product. In the latter case the rate expression d[ Fe(III)]/dt = k[Fe(III)](2) [NH2OH](2) /[Fe(III)](2) [H+](4) is obtained. The consistent mechanism identifies two pre-equilibria and the reaction of two different nitrogen-containing intermediates as the rate-determining step depending on the reactant ratios. The proposed mechanism does also involve the metal hydroxide complex Fe(OH)(2+), in agreement with previous results.}},
author = {{Bengtsson, Gösta and Fronaeus, Sture and Bengtsson-Kloo, L}},
issn = {{1472-7773}},
language = {{eng}},
number = {{12}},
pages = {{2548--2552}},
publisher = {{Royal Society of Chemistry}},
series = {{Journal of the Chemical Society. Dalton Transactions}},
title = {{The kinetics and mechanism of oxidation of hydroxylamine by iron(III)}},
url = {{http://dx.doi.org/10.1039/b201602h}},
doi = {{10.1039/b201602h}},
year = {{2002}},
}