The dissociative photoionization of energy-selected xylyl (methylbenzyl) bromide isomers was investigated by imaging and double imaging photoelectron coincidence (iPEPICO& i2PEPICO) spectroscopy using the VUV synchrotron radiation. For these experiments, one dissociation channel was observed, corresponding to the bromine loss. All three isomers, ortho- para- and meta-, inhibited a slow dissociation. Using RRKM theory of the miniPEPICO program, breakdown diagrams and time-of-flight distributions were used to establish the 0 K appearance energies of the bromine loss dissociation channels. Along with literature thermochemical information known for the fragment bromine and the daughter ion dissociating from the parent molecules, the heat of formation for the three cationic isomers was found.

Photoionization and photodissocation of xylyl (methylbenzyl) bromide radicals using VUV synchrotron radiation

253rd National Meeting (2017)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.