Abstract
We present a comparative study of dissociative electron attachment for 20 saturated compounds containing ether and hydroxyl groups. We have discovered an unexpected case of selectivity for the cleavage of the C–O bonds in asymmetrical ethers R1–O–R2, within the range of the σ-Feshbach resonances, where a neutral alkyl group R1 is lost at a given energy, independent of R2. This empirical rule indicates that the excitation of Feshbach resonances responsible for the fragmentation is spatially localized on one or the other alkyl group. A number of other observations are also presented.
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