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TítuloHighly stable complexes of divalent metal ions (Mg2+, Ca2+, Cu2+, Zn2+, Cd2+, and Pb2+) with a dota‐like ligand containing a picolinate pendant

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Table 1. Stability constants of the [M(do3a‐pic)] 2–  complexes   (I = 0.1 M KCl, 0.1 M KNO 3  or 0.1 M Me 4 NNO 3  25 °C) and related systems
Figure 1. Absorption spectra of the Cu 2+ –do3a‐pic system as a function of pH recorded at pH 0.25–10.95   ([HCl]+[KCl] = 0.1 M, [Cu 2+ ] = [do3a‐pic] = 2.0 mM, l = 1 cm, 25 °C)
Table 2. Comparison of the pM values calculated for do3a‐pic 4–  complexes and related systems
Figure 2. pM values calculated for the complexes reported in this work and related systems
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b Departamento de Química Inorgánica, Universidad Autónoma de Madrid, 28049 Madrid, Spain.. c Departamento de Química Orgánica y Química Inorgánica, Universidad