pH-Potentiometric Investigation towards Chelating Tendencies of 𝑝-Hydroquinone and Phenol Iminodiacetate Copper(II) Complexes

Figure 1

Species distribution (% formation) for the phenol (a) and p-hydroquinone (b) iminodiacetate ligands as a function of pH over the range 2.00–10.0 at molar concentration 5.00 mmol dm^−𝟑 (25^∘C, 𝐼=0.10 mol dm^−𝟑 KCl, pK_𝑤=13.78, and 𝛾=0.78).

(a)

(b)