论文信息 - Complex Formation between 3-Phospho-d-glyceric Acid and Divalent Metal Ions

Complex Formation between 3-Phospho-d-glyceric Acid and Divalent Metal Ions

Stoichiometric dissociation constants of complexes between the fully deprotonated 3-phospho-d-glyceric acid and Mg2+, Mn2+, Ca2+, Co2+, Zn2+, and Ni2+, respectively, were determined in 0.25 M NaCl at 25°C. Potentiometric titrations of the ligand with these divalent metal ions were performed over a pH range close to the pK for the final deprotonation step of the ligand. The observed pH changes were utilized to estimate the dissociation constants; both algebraic and graphical techniques were employed in the estimations. Under the experimental conditions 1:1 complexes were the predominant products.

Märtha Larson‐raźnikiewicz | Märtha Larson‐raźnikiewicz

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