Electron transfer reactions of nitromethane, acetaldehyde and benzaldehyde with (H2O)(n)(-), CO2 center dot-(H2O)(n), and O-2(-)(H2O)(n), n < 110, in the gas phase

Akhgarnusch, Amou and Beyer, Martin (2014) Electron transfer reactions of nitromethane, acetaldehyde and benzaldehyde with (H2O)(n)(-), CO2 center dot-(H2O)(n), and O-2(-)(H2O)(n), n < 110, in the gas phase International Journal of Mass Spectrometry, 365 . pp. 295-300.

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Abstract

The reactions of nitromethane, acetaldehyde and benzaldehyde with hydrated electrons (H2O)(n)(-) and the hydrated radical anions CO2 center dot-(H2O)(n), O-2(-)(H2O)(n), with n < 110, were studied by Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry. Electron transfer reactions, with the newly formed radical anion staying in the water cluster, were found to take place for (H2O)(n)(-) and CO2 center dot-(H2O)(n), while O-2(-)(H2O)(n) were unreactive. The reaction rates for the electron transfer processes were derived assuming pseudo first order kinetics. Thermochemistry was analyzed in the framework of nanocalorimetry. Reaction dynamics governs the measured rates, with benzaldehyde reacting least efficiently. Electron transfer from CO2 center dot-(H2O)(n) is probably associated with a barrier. Hydration seems to stabilize a valence-bound state of CH3CHO(H2O)(n)(-). (C) 2014 Elsevier B.V. All rights reserved.

Document Type: Article
Additional Information: Times Cited: 0 SI Beyer, Martin/A-5793-2009 Beyer, Martin/0000-0001-9373-9266 0
Research affiliation: Kiel University > Faculty of Mathematics and Natural Sciences > Institute of Physical Chemistry
OceanRep > The Future Ocean - Cluster of Excellence
ISSN: 1387-3806
Projects: Future Ocean
Date Deposited: 30 Mar 2015 11:56
Last Modified: 30 Mar 2015 11:56
URI: http://eprints.uni-kiel.de/id/eprint/27105

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