The state of 1,2,3,4-tetrahydro-8-hydroxyquinoline is studied spectrophotometrically in the near-UV and visible regions at different pH in an aqueous solution in the presence and absence of Cu2+, Zn2+, and Cd2+ cations. The dissociation constant (pK 1 ≈ 5.6 (293 K)) is (293 K)) is estimated from the pH-metric data. The stability of the complexes formed decreases in the series Cu2+ > Zn2+ ≥ Cd2+. The influence of tetrahydro atoms on the dissociation, complexation, and change in the state of 1,2,3,4-tetrahydro-8-hydroxyquinoline in an aqueous solution is discussed.
Russian Journal of Coordination Chemistry – Springer Journals
Published: Feb 13, 2006
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