Thermodynamic and Extrathermodynamic Studies of Enantioseparation of Imidazolinone Herbicides on Chiralcel OJ Column

Table 5

The correlation coefficients (𝑟²), compensation temperature (𝛽) and Δ𝐺^∘_𝛽 in enthalpy-entropy compensation.

Mobile phases	(𝑟^2)𝑆	𝛽 (°C)	Δ𝐺^∘𝛽	(𝑟^2)𝑅	β (°C)	Δ𝐺^∘𝛽
85/15	0.668	−16.0	−11.44	0.812	45.0	−9.19
80/20	0.718	2.2	−9.10	0.837	53.4	−7.34
75/25	0.757	16.8	−7.29	0.860	57.4	−6.02
70/30	0.788	25.7	−6.09	0.888	64.2	−4.76
60/40	0.877	29.7	−4.40	0.927	61.9	−3.50