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Photometric determination of the stability constant of the palladium(II)—pyridine-2,6-dicarboxylate complex

Authors
Journal
Talanta
0039-9140
Publisher
Elsevier
Publication Date
Volume
27
Issue
8
Identifiers
DOI: 10.1016/0039-9140(80)80213-x

Abstract

Abstract From the absorption spectra it has been concluded that Pd(II) forms a 1:1 complex with pyridine-2,6-dicarboxylic acid in aqueous solution at pH 2. The influence of various concentrations of chloride on the spectr has been examined. Ternary complex formation with chloride does not occur to a measurable extent. The conditional stability constant has been determined from data collected near the equivalence point of the titration curve. With allowance for the different side-reactions in this medium at an ionic strength of 0.2, a value of log K = 16.0 ± 0.2 has been found for the stability constant.

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