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The Synthesis, Crystal Structure, and Magnetic Properties of Mono-Scorpionate Eu(III) Complexesстатья Исследовательская статья
- Авторы: Vostrikova Kira E., Sukhikh Taisiya S., Lavrov Alexander N.
- Журнал: INORGANICS
- Том: 11
- Номер: 10
- Год издания: 2023
- Издательство: Molecular Diversity Preservation International (MDPI)
- Местоположение издательства: Basel, Switzerland
- Номер статьи: 418
- DOI: 10.3390/inorganics11100418
- Аннотация: Three Eu3+ complexes containing a neutral tripodal ligand possessing a predictable coordination mode have been obtained and studied. The trispyrazolylmethane complexes have an aqua ligand in the coordination sphere, forming both the mononuclear species [Eu(HCPz3)H2O(NO3)3] and the dimer [Eu(HCPz3)H2O(CF3SO3)3]2, having a Chinese lantern structure, whereas the use of the methylated tripod leads to the water-free complex, [Eu(HC(PzMe2)3)(NO3)3]. A qualitative analysis of the magnetic susceptibility of polycrystalline samples demonstrated that the magnetic properties can be described using a simple Van Vleck formula with spin–orbit coupling parameter (λ = 383 ÷ 406 cm−1) close to the values for free Eu3+ ions. The stereochemical analysis of the coordination environment of [Ln(HC(PzMe2)3)(NO3)3] has shown that these complexes can be used as diamagnetic model systems to obtain information on the crystal field effects in the paramagnetic monoradical complexes, [LnRad(NO3)3], since both types of compounds have the same type of coordination polyhedron (symmetry point group D3h) and very close Ln–donor atom distances.
- Добавил в систему: Vostrikova Kira E.