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Site-Selective Solvation-Induced Conformational Switching of Heteroleptic Heteronuclear Tb(III) and Y(III) Trisphthalocyaninates for the Control of Their Magnetic Anisotropyстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.
- Авторы: Martynov Alexander G., Birin Kirill P., Kirakosyan Gayane A., Gorbunova Yulia G., Tsivadze Aslan Yu
- Журнал: Molecules
- Том: 28
- Номер: 11
- Год издания: 2023
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 4474
- Последняя страница: 4474
- DOI: 10.3390/molecules28114474
- Аннотация: In the present work, we report the synthesis of isomeric heteronuclear terbium(III) and yttrium(III) triple-decker phthalocyaninates [(BuO)8Pc]M[(BuO)8Pc]M*[(15C5)4Pc] (M = Tb, M* = Y or M= Y, M* = Tb, [(BuO)8Pc]2−–octa-n-butoxyphthalocyaninato-ligand, [(15C5)4Pc]2−–tetra-15-crown-5- phthalocyaninato-ligand). We show that these complexes undergo solvation-induced switching: the con- formers in which both metal centers are in square-antiprismatic environments are stabilized in toluene, whereas in dichloromethane, the metal centers M andM* are in distorted prismatic and antiprismatic environments, respectively. This conclusion follows from the detailed analysis of lanthanide-induced shifts in 1H NMR spectra, which makes it possible to extract the axial component of the magnetic susceptibility tensor χTbax and to show that this term is particularly sensitive to conformational switching when terbium(III) ion is placed in the switchable “M” site. This result provides a new tool for controlling the magnetic properties of lanthanide complexes with phthalocyanine ligands.
- Добавил в систему: Мартынов Александр Германович