Abstract
The technique of photofragmentation translational spectroscopy has been used to study the photodissociation of CH2ClCH2I at an excitation wavelength of 308 nm. The exclusive dissociation pathway is C–I bond breakage with formation of CH2ClCH2 and I(2P3/2). The centre‐of‐mass translational energy distribution of the photofragments reveals that an average of about 50% of the excess energy appears in translation. The angular distribution of dissociation products with respect to the laser polarization indicates that the photodissociation process proceeds via a parallel transition—i.e., the transition moment must be nearly parallel to the C–I bond. Exclusive production of ground state I(2P3/2) with a parallel polarization dependence is unexpected based on the prevailing picture for alkyl iodide photodissociation.
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