First 24-Membered Macrocyclic 1,10-Phenanthroline-2,9-Diamides—An Efficient Switch from Acidic to Alkaline Extraction of f-Elements

A reaction of acyl chlorides derived from 1,10-phenanthroline-2,9-dicarboxylic acids with piperazine allows the preparation of the corresponding 24-membered macrocycles in good yield. The structural and spectral properties of these new macrocyclic ligands were thoroughly investigated, revealing prom...

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Detalles Bibliográficos
Autores principales: Lemport, Pavel S., Petrov, Valentine S., Matveev, Petr I., Leksina, Uliana M., Roznyatovsky, Vitaly A., Gloriozov, Igor P., Yatsenko, Alexandr V., Tafeenko, Viktor A., Dorovatovskii, Pavel V., Khrustalev, Viktor N., Budylin, Gleb S., Shirshin, Evgeny A., Markov, Vitaliy Yu., Goryunkov, Alexey A., Petrov, Vladimir G., Ustynyuk, Yuri A., Nenajdenko, Valentine G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10299701/
https://www.ncbi.nlm.nih.gov/pubmed/37373410
http://dx.doi.org/10.3390/ijms241210261
Descripción
Sumario:A reaction of acyl chlorides derived from 1,10-phenanthroline-2,9-dicarboxylic acids with piperazine allows the preparation of the corresponding 24-membered macrocycles in good yield. The structural and spectral properties of these new macrocyclic ligands were thoroughly investigated, revealing promising coordination properties towards f-elements (Am, Eu). It was shown that the prepared ligands can be used for selective extraction of Am(III) from alkaline–carbonate media in presence of Eu(III) with an SF(Am/Eu) up to 40. Their extraction efficiency is higher than calixarene-type extraction of the Am(III) and Eu(III) pair. Composition of macrocycle–metal complex with Eu(III) was investigated by luminescence and UV-vis spectroscopy. The possibility of such ligands to form complexes of L:Eu = 1:2 stoichiometry is revealed.

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