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. Author manuscript; available in PMC: 2018 Dec 6.
Published in final edited form as: J Am Chem Soc. 2017 Nov 27;139(48):17313–17326. doi: 10.1021/jacs.7b06246

Figure 10.

Figure 10

Decay rate constants of 2a (λmax = 540 nm) plotted as a function of [AcOH] at −40 °C. The data are fitted with a hyperbolic function. This fit suggests a 2-step process in which fast reversible binding of AcOH (Kd = 0.17 M) is followed by a slower conversion to another species (4a) at a maximum apparent rate constant of 0.28 s−1. The maximal rate of decay shows that AcOH increases the decay rate of 2a by ~ 900-fold when saturation is achieved.