A chemical link between saturated and unsaturated aldehydes and ketenes in the interstellar medium - Laboratory experiments on the H-atom reactions of propenal (CH2CHCHO) and propanal (CH3CH2CHO) at low temperatures

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Fig. 2

Potential energy surface of the reactions of H-atom abstraction (e) and addition (a) with cis- and gauche-CH₃CH₂CHO molecules. The energies are provided in kJ mol⁻¹ relative to the cis-CH₃CH₂CHO (+2H^•) species. The radical–radical reaction pathways hypothesized theoretically and generally expected, without computational verification, are indicated with dashed lines.

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