Effect of Counteranions on the Conformational Equilibrium of 1-Butyl-3-methylimidazolium-Based Ionic Liquids

Figure 3

Plots of 𝐼_𝐺𝑇/𝐼_𝑇𝑇 of the [bmim]⁺ cation versus (a) ionic radius of anions except the CH₃COO anion, and (b) the order of 𝐼_𝐺𝑇/𝐼_𝑇𝑇 for anions of pure [bmim][X] ([X]= CH₃COO, NO₃, SCN, PF₆, and BF₄).

(a)

(b)