Electronic spectra of benzyl and methyl-substituted benzyl radicals

Self-termination and electronic spectra of substituted benzyl radicals in solution

“…The absorption spectra of the three monomethylbenzyl radicals obtained by photolyzing the appropriate ketone under conditions similar to those above, are in excellent agreement with the solid-state fluorescence spectra previously recorded. 19,22,23 The similarity of these spectra to those of benzyl, particularly in the ultraviolet region, show that the C2" symmetry is not greatly affected by methyl substitution. The positions of the maxima of the 0® bands of the transitions, shown in Table III, are all shifted to the red with respect to those of the benzyl radical.…”

“…The elastic spectator (ES) model of Herschbach26 predicts a high degree of angular momentum polarization in atom plus diatomic molecular reactions as a function of the skew angle ß of the potential energy surface. In the present case, the "spectator" is a diatomic molecule which can carry away angular momentum, and thus the predictions of the ES model are not directly ap- (23) W. H. Fink and L. C. Allen, J. Chem. Phys., 46, 2276 (1967).…”

The 248-nm Excimer-Laser-Ablation Mechanism of Liquid Benzene Derivatives: Photochemical Formation of Benzyl Radical Leads to Ablation

“…radical is the molar absorption coefficient of the benzyl radical at 318 nm, which is 5500 cm -1 M -1 . 20 OD radical is the maximum of transient absorbance at 318 nm obtained by transient absorption spectroscopy.…”

Laser photolysis investigation of induced quenching in photoreduction of benzophenone by alkylbenzenes and anisoles

“…1(a) demonstrates that the deactivation of 3BP* in the presence of Tol involves HA from Tol to give BPK and the benzyl radical which has no absorption in the wavelength range used 380È650 nm. 54 The experimentally obtained value increased linearly with increase in [Tol]. k obsd Thus, the value may be expressed by : k obsd…”