Fig. 4: Kinetic analysis of rotations in WP5-M.
From: Cation controlled rotation in anionic pillar[5]arenes and its application for fluorescence switch
a Correlation of the rotational barrier ΔG≠exp with corresponding cation radius. b Enthalpy-entropy compensation plot of WP5-M. c Illustration of electron repulsion between carboxylate anion (represented with pink balls) and electron-rich cavity (represented with red translucent hemisphere) versus cation (represented with silver balls) lubricant effect.
