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Figure 8
PES scans of (a) DA5 and (b) DA11 as a function of τ2 from −180 to 180° with τ1 = ±180° in the gas phase, in ethanol and 1,4-dioxane, respectively. Conformation I of both DA5 and DA11 are located in global minima and conformation II of both are situated in adjacent local minima. ΔEI→II and ΔEII→I are the energy barriers for the conformational change from I to II and II to I, respectively.

IUCrJ
Volume 7| Part 3| May 2020| Pages 422-433
ISSN: 2052-2525