C-Br bond fission mechanism of 1-bromo-3-chloropropane at 234 and 265Â nm

The photodissociation of 1-bromo-3-chloropropane was studied at 234 and 265 nm using ion velocity imaging technique. Bromine fragments in this study were produced via direct dissociation of C-Br bond. The speed and angular distributions of Br∗ and Br were measured. The appearance of chlorine fragments at 234 nm was assigned to a secondary dissociation process. The contributions of three excited states: 1Q1, 3Q0 and 3Q1 were estimated at each wavelength. Comparing with previous results, the study reveals more details about the dynamics of molecules with multichromophores.