Investigation of the two- and three-fragment photodissociation of the tert-butyl peroxy radical at 248 nm.

摘要: The photodissociation dynamics of the tert-butyl peroxy (t-BuOO) radical are studied by fast-radical-beam coincidence translational spectroscopy. neutral t-BuOO is formed photodetachment corresponding t-BuOO− anion at 700 nm (1.77 eV), followed dissociation 248 (5.00 eV). Photofragment mass and energy distributions obtained. major channel found to be three-body fragmentation form O, CH3, acetone (83%), with minor two-body channels leading formation O2 + (10%) HO2 isobutene (7%). Experimental results show that distribution for peaks close zero energy, an isotropic angular fragments. These indicate proceeds via internal conversion ground electronic state statistical dissociation. For dissociation, close...