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Issue 23, 2007
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Energy selective excision of CN following electron attachment to hexafluoroacetone azine ((CF3)2C[double bond, length as m-dash]N–N[double bond, length as m-dash]C(CF3)2)

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Abstract

Low energy electron attachment (DEA) to hexafluoroacetone azine (HFAA) leads to a remarkable energy selective excision of CN within a pronounced resonance located at 1.35 eV. The underlying dissociative electron attachment (DEA) reaction involves multiple bond cleavages and rearrangement within the neutral products. A series of further fragment ions (F, CF3, (CF3)2C and (CF3)2CN) are observed from resonant features above 2 eV and only (CF3)2CN is additionally formed within a narrow resonance below 1 eV. In contrast to CN all the remaining fragment ions can be formed by simple bond cleavages with (CF3)2CN being the result of a symmetric decomposition of the target molecule by cleavage of the (N–N) bond with the excess charge localised on either of the identical fragments. Our ab initio calculations predict an adiabatic electron affinity of HFAA close to 2 eV with the geometry of the relaxed anion considerably distorted with respect to that of the neutral molecule.

Graphical abstract: Energy selective excision of CN− following electron attachment to hexafluoroacetone azine ((CF3)2C [[double bond, length as m-dash]] N–N [[double bond, length as m-dash]] C(CF3)2)

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Publication details

The article was received on 15 Feb 2007, accepted on 03 Apr 2007 and first published on 23 Apr 2007


Article type: Paper
DOI: 10.1039/B702482G
Citation: Phys. Chem. Chem. Phys., 2007,9, 2983-2990

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    Energy selective excision of CN following electron attachment to hexafluoroacetone azine ((CF3)2C[double bond, length as m-dash]N–N[double bond, length as m-dash]C(CF3)2)

    I. Bald, I. Dąbkowska, E. Illenberger and O. Ingólfsson, Phys. Chem. Chem. Phys., 2007, 9, 2983
    DOI: 10.1039/B702482G

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