Complexation of rare earth metals by quercetin and quercetin-5’-sulfonic acid in acidic aqueous solution

Article type: Research Article

Authors: Lutoshkin, Maxim A.^{a; b; *} | Petrov, Alexander I.^{a; c} | Kazachenko, Alexandr S.^a | Kuznetsov, Boris N.^{a; c} | Levdansky, Vladimir A.^a

Affiliations: [a] Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russian Federation | [b] Université de Lyon, Université Claude Bernard Lyon 1, CNRS, UMR 5256, IRCELYON, Institut de recherches sur la catalyse et l’environnement de Lyon, Villeurbanne, France | [c] Institute of Non-Ferrous Metals and Materials Science, Siberian Federal University, Krasnoyarsk, Russian Federation

Correspondence: [*] Corresponding author: Maxim A. Lutoshkin. E-mail: [email protected].

Abstract: The aqueous complexation of some lanthanides(III) and lanthanum(III) ions with quercetin and quercetinsulfanate are reported. The equilibrium stability constants for the formation of 1 : 1 monocomplexes Ln(III)-quercetin/quercetinsulfanate (Ln(III)=La(III), Ce(III), Pr(III), Nd(III), Sm(III), Eu(III), Gd(III), Tb(III), Dy(III), Er(III), Tm(III), Yb(III)) were determine in an acetic buffered solution. The measurements were conducted by spectrophotometric method at 293 K and I = 1(NaClO4). Structures of formed complexes were suggested with using DFT simulations.

Keywords: Quercetin, quercetinsulfanate, O-donor ligands, lanthanides

DOI: 10.3233/MGC-180253

Journal: Main Group Chemistry, vol. 17, no. 1, pp. 17-25, 2018