Figure 4.

(Right) Experimental small-angle X-ray scattering total structure function S(q) at 300 K. (Left) Simulated S(q) at 400 K. Both figures show in the region above 1 Å^–1 and below 1.8 Å^–1 what we call an adjacency peak; they also show at around 0.8 Å^–1 the charge alternation peak associated with the charge trio discussed in Figure 5.