Calculated DEIE for Cl⁻ and Br⁻ binding. Goodness of fit (R²) of the titration data to eqn (1) through linear regression is included in parentheses.

13C NMR Signal	DEIE (R2)
Carbon	Cl−	Br−
Cab	0.983 ± 0.017 (0.997)	1.006 ± 0.010 (0.999)
C1	1.006 ± 0.007 (0.999)	1.009 ± 0.018 (0.997)
C1	1.014 ± 0.002 (1.00)	0.990 ± 0.046 (0.981)