Atmospheric chemistry of iodine anions: elementary reactions of I−, IO−, and IO2− with ozone studied in the gas-phase at 300 K using an ion trap

Literature Information

Publication Date 2018-11-08
DOI 10.1039/C8CP05721D
Impact Factor 3.676
Authors

Ricky Teiwes, Jonas Elm, Karsten Handrup, Ellen P. Jensen, Merete Bilde, Henrik B. Pedersen


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Abstract

Using a radio-frequency ion trap to study ion–molecule reactions under isolated conditions, we report a direct experimental determination of reaction rate constants for the sequential oxidation of iodine anions by ozone at room temperature (300 K). The results are R1: I− + O3 → IO− + O2, k1 = (7 ± 2) × 10−12 cm3 s−1; R2: IO− + O3 → IO2− + O2, k2 = (10 ± 2) × 10−9 cm3 s−1; R3: IO2− + O3 → IO3− + O2, k3 = (16 ± 2) × 10−9 cm3 s−1. More oxidized forms such as IO4− and IO5− were not observed. Additionally, we performed quantum chemical calculations to elucidate the energetics of these oxidation reactions.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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