Figure 2.

Log(S), the logarithm of the inverse slope, is plotted vs. waiting time T from simulated 2D IR spectra using different correlation functions. For all the simulations a correlation function of the form $C\left(T\right)={\Delta }_1^2{e}^{\frac{-T}{{\tau }_1}}+{\Delta }_2^2{e}^{\frac{-T}{{\tau }_2}}$ was used, where values of Δ₁ & Δ₂ were taken from the work of Skinner and coworkers[50]. The value of τ₂ was set to 2ps (Skinner's value was 0.8 ps) and as τ₁ is increased the slope begins to show a biexponential decay.