Extended Data Fig. 1: Absorption spectra of reaction constituents.
From: Unimolecular net heterolysis of symmetric and homopolar σ-bonds
a, Difference absorption spectrum of PhSe•. b, Spectra of PhSe+ (top), PhSe– (middle, taken in acetonitrile), and (PhSe)2 (bottom). c, Spectra of 2a (top), benzotriazole (3a, middle), and a mixture of 2a (c = 11.1 mm), 3a (c = 22.2 mm) (bottom). d, Spectra of 5a+ (top, taken in acetonitrile), 2-(cyclohex-2-en-1-yl)-2H-benzo[d][1,2,3]triazole (4aa, middle), and HFIP (bottom, black curve) and TFA (bottom, blue curve). All spectra shown in a to d were taken in HFIP, unless stated otherwise, and illustrate the LED emission band (sketched in olive) used in the synthetic studies (Fig. 4 and Extended Data Fig. 3).
