Table 4. Log K* and pM Values for the Studied Systems at pH 7.4.

	log K*
	species	DP1	species	DP2	species	Term-DEH	species	Mid-DEH	species	Bis-DEH
1N	CuH2L	–1.11			CuH2L	–1.79	CuH2L	–1.98	CuH2L	0.04
2N					CuHL	–7.13	CuHL	–6.57
3N	CuL	–9.75	CuL	–6.88	CuL	–13.5	CuL	–12.28	CuL	–9.62
4N	CuLH–1	–14.83	CuLH–3	–23.02	CuLH–1	–22.34	CuLH–2	–21.05	CuLH–1	–15.21

	DP1	DP2	Term-DEH	Mid-DEH	Bis-DEH
pCu (pH 7.4)a ([L] = 1.1 × 10–3, [Cu(II)] = 10–3)	8.34	8.23	5.58	5.74	8.23
pCu (pH 7.4)b ([L] = 10–5, [Cu(II)] = 10–6)	14.65	14.41	9.11	9.44	14.43
pMn (pH 7.4)a ([L] = 0.55 × 10–3, [Mn(II)] = 0.5 × 10–3)	3.54	3.58	3.69	4.24	3.81
pMn (7.4)b ([L] = 10–5, [Mn(II)] = 10–6)	6.05	6.04	6.08	6.53	6.13

^aConcentrations used for potentiometric analysis.

^bMCT physiologically relevant conditions.