The reaction of hydrated iodide I(H2O)- with ozone: a new route to IO2− products

Ricky Teiwes; Jonas Elm; Merete Bilde; Henrik B. Pedersen

doi:10.1039/C9CP01734H

The reaction of hydrated iodide I(H₂O)^- with ozone: a new route to IO2− products

Ricky Teiwes, Jonas Elm, Merete Bilde, Henrik B. Pedersen

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

18 Citationer (Scopus)

Abstract

We report on an experimental characterization of the isolated reaction of hydrated iodide I(H ₂O) ^- with ozone O ₃ at room temperature performed using a radio-frequency ion trap combined with a quadrupole mass spectrometer. Contrary to the oxidation reaction of the bare I ^- ion, the hydrated iodide I(H ₂O) ^- primarily reacts to form I ^- and IO ₂ ^- with significant absolute reaction rate constants of 2.0 ± 0.3 × 10 ^-10 cm ³ molecule ^-1 s ^-1 and 2.5 ± 0.3 × 10 ^-10 cm ³ molecule ^-1 s ^-1 while direct pathways to IO ^- and IO ₃ ^- are much weaker. Quantum chemical calculations indicate that in aqueous phase and for atmospherically relevant temperatures, the presence of hydrated iodides are favored over bare I ^- ions, thus suggesting that the chemistry of the hydrated ions is relevant for understanding and modeling atmospheric processes at the air-water interface.

Originalsprog	Engelsk
Tidsskrift	Physical Chemistry Chemical Physics
Vol/bind	21
Nummer	32
Sider (fra-til)	17546-17554
Antal sider	9
ISSN	1463-9076
DOI	https://doi.org/10.1039/C9CP01734H
Status	Udgivet - aug. 2019

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10.1039/C9CP01734H

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Citationsformater

@article{b9f8be8f0bb54618a4d4fe9c368725c7,

title = "The reaction of hydrated iodide I(H2O)- with ozone: a new route to IO2− products",

abstract = "We report on an experimental characterization of the isolated reaction of hydrated iodide I(H 2O) - with ozone O 3 at room temperature performed using a radio-frequency ion trap combined with a quadrupole mass spectrometer. Contrary to the oxidation reaction of the bare I - ion, the hydrated iodide I(H 2O) - primarily reacts to form I - and IO 2 - with significant absolute reaction rate constants of 2.0 ± 0.3 × 10 -10 cm 3 molecule -1 s -1 and 2.5 ± 0.3 × 10 -10 cm 3 molecule -1 s -1 while direct pathways to IO - and IO 3 - are much weaker. Quantum chemical calculations indicate that in aqueous phase and for atmospherically relevant temperatures, the presence of hydrated iodides are favored over bare I - ions, thus suggesting that the chemistry of the hydrated ions is relevant for understanding and modeling atmospheric processes at the air-water interface.",

author = "Ricky Teiwes and Jonas Elm and Merete Bilde and Pedersen, {Henrik B.}",

year = "2019",

month = aug,

doi = "10.1039/C9CP01734H",

language = "English",

volume = "21",

pages = "17546--17554",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - The reaction of hydrated iodide I(H2O)- with ozone

T2 - a new route to IO2− products

AU - Teiwes, Ricky

AU - Elm, Jonas

AU - Bilde, Merete

AU - Pedersen, Henrik B.

PY - 2019/8

Y1 - 2019/8

N2 - We report on an experimental characterization of the isolated reaction of hydrated iodide I(H 2O) - with ozone O 3 at room temperature performed using a radio-frequency ion trap combined with a quadrupole mass spectrometer. Contrary to the oxidation reaction of the bare I - ion, the hydrated iodide I(H 2O) - primarily reacts to form I - and IO 2 - with significant absolute reaction rate constants of 2.0 ± 0.3 × 10 -10 cm 3 molecule -1 s -1 and 2.5 ± 0.3 × 10 -10 cm 3 molecule -1 s -1 while direct pathways to IO - and IO 3 - are much weaker. Quantum chemical calculations indicate that in aqueous phase and for atmospherically relevant temperatures, the presence of hydrated iodides are favored over bare I - ions, thus suggesting that the chemistry of the hydrated ions is relevant for understanding and modeling atmospheric processes at the air-water interface.

AB - We report on an experimental characterization of the isolated reaction of hydrated iodide I(H 2O) - with ozone O 3 at room temperature performed using a radio-frequency ion trap combined with a quadrupole mass spectrometer. Contrary to the oxidation reaction of the bare I - ion, the hydrated iodide I(H 2O) - primarily reacts to form I - and IO 2 - with significant absolute reaction rate constants of 2.0 ± 0.3 × 10 -10 cm 3 molecule -1 s -1 and 2.5 ± 0.3 × 10 -10 cm 3 molecule -1 s -1 while direct pathways to IO - and IO 3 - are much weaker. Quantum chemical calculations indicate that in aqueous phase and for atmospherically relevant temperatures, the presence of hydrated iodides are favored over bare I - ions, thus suggesting that the chemistry of the hydrated ions is relevant for understanding and modeling atmospheric processes at the air-water interface.

U2 - 10.1039/C9CP01734H

DO - 10.1039/C9CP01734H

M3 - Journal article

SN - 1463-9076

VL - 21

SP - 17546

EP - 17554

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 32