Impact of α-substitution on the photodissociation dynamics of nitromethane: The CH3 and NO release channels.
Photolysis of 1-nitropropane, 2-methyl-2-nitropropane, and (nitromethyl)benzene at 213 and 225 nm reveals distinct mechanistic features in CH3 and NO elimination channels. The CH3 fragments exhibit anisotropic, non-statistical translational energy distributions, consistent with barrier-impulsive dissociation on the T1...