Study of the complexation reaction between subtituted 6,6′-bis(diphenylphosphinoyl)-2,2′-bipyridyls and lanthanum ions

Ts. Sumyanova; N. Borisova; А. Petukhova; A. Kirsanova

doi:10.1117/12.2623658

29 April 2022 Study of the complexation reaction between subtituted 6,6′-bis(diphenylphosphinoyl)-2,2′-bipyridyls and lanthanum ions

Ts. Sumyanova, N. Borisova, А. Petukhova, A. Kirsanova

Author Affiliations +

Proceedings Volume 12193, Laser Physics, Photonic Technologies, and Molecular Modeling; 121930S (2022) https://doi.org/10.1117/12.2623658
Event: XXV Annual Conference Saratov Fall Meeting 2021; and IX Symposium on Optics and Biophotonics, 2021, Saratov, Russian Federation

Abstract

The effect of a donor methyl groups in the structure of 6,6′-bis(di(3,5-R-phenylphosphinoyl)-2,2′-bipyridyl R = H or Me on the stability constants of lanthanum complexes was studied. Regardless of the presence of a donor substituent in phosphine oxide moiety, the stoichiometry of the complex with lanthanum was 1:1 metal to ligand. The values of the stability constant of the complexes were obtained. The insertion of methyl groups lead to increase in stability of the corresponding complexes with lanthanum which correlates well with enhance in extraction ability of the corresponding compounds towards europium.

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Ts. Sumyanova, N. Borisova, А. Petukhova, and A. Kirsanova "Study of the complexation reaction between subtituted 6,6′-bis(diphenylphosphinoyl)-2,2′-bipyridyls and lanthanum ions", Proc. SPIE 12193, Laser Physics, Photonic Technologies, and Molecular Modeling, 121930S (29 April 2022); https://doi.org/10.1117/12.2623658

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