Figure 1.
Top: UV-Vis changes accompanying self-decay of a 0.12 mM CH3CN solution of 1, at 25°C, which proceeds without isosbestic points (inset). Bottom: UV-Vis changes accompanying reaction of a 0.13 mM CH3CN solution of 1 with 16 mM 1,4-CHD, at −30°C, which exhibits isosbestic points at 333 and 371 nm (inset).