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Structure–property relation of amines over the pH range 5.6–7. (a) The variation in the charged and hydrophobic nature of propylamines and ethyleneamines as a function of pH. (b) Relative k3rd for propylamines and ethyleneamines as a function of pH. The arrows show the change in the charged and hydrophobic nature of C2N6 and C3N7 from pH 6 to pH 6.6 (a) that is associated with the change in kinetic activity (b).
