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Dissociative recombination of fully deuterated protonated acetonitrile, CD3CND+: product branching fractions, absolute cross section and thermal rate coefficient

Journal article
Authors E Vigren
M Kaminska
M. Hamberg
Vitali Zhaunerchyk
R D Thomas
M Danielsson
J Semaniak
Patrik U Andersson
M Larsson
W D Geppert
Published in Phys.Chem.Chem.Phys
Volume 10
Pages 4014-4019
Publication year 2008
Published at Department of Chemistry
Pages 4014-4019
Language en
Links dx.doi.org/10.1039/b801566j
Subject categories Chemical Sciences

Abstract

The dissociative recombination of fully deuterated protonated acetonitrile, CD3CND+, has been investigated at the CRYRING heavy ion storage ring, located at the Manne Siegbahn Laboratory, Stockholm, Sweden. Branching fractions were measured at 0 eV relative collision energy between the ions and the electrons and in 65% of the DR events there was no rupture of bonds between heavy atoms. In the remaining 35%, one of the bonds between the heavy atoms was broken. The DR cross-section was measured between 0 eV and 1 eV relative collision energy. In the energy region between 1 meV and 0.1 eV the cross section data were best fitted by the expression = 7.37 × 10−16 (E/eV)−1.23 cm2, whereas = 4.12 × 10−16 (E/eV)−1.46 cm2 was the best fit for the energy region between 0.1 and 1.0 eV. From the cross section a thermal rate coefficient of (T) = 8.13 × 10−7 (T/300)−0.69 cm3 s−1 was deduced.

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