Electron-Transfer Reactions in the Marcus Inverted Region. Charge Recombination versus Charge Shift Reactions

1917-1919 1917 molecule, into a Cz and a C, unit, had occurred prior to entry into pyridoxol, then deuterium would have been incorporated not only into C-2' and C-4', as observed, but also into C-5' (c.f., ref 3). Because of the superposition of signals at 6 4.95 ppm in the 2H NMR spectrum of labeled pyridoxol hydrochloride in methanol (Figure 1B) and the unfavorable signal-to-noise ratio in the difference spectrum (Figure 1C) the ratio, signal area at