Synthesis, structures and magnetic properties of three cyclic lanthanide complexes with nitronyl nitroxide radical
| Autor: | Peng Hu, Li-Juan Zhang, Zhong-Yi Liu, Yuan-Yuan Gao, Jian Song, Rui-Jun Xie, Jie Yu, Ling-Zhu Huang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Lanthanide
Nitroxide mediated radical polymerization Radical Bridging ligand 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Ring (chemistry) 01 natural sciences 0104 chemical sciences Ion Inorganic Chemistry chemistry.chemical_compound Crystallography chemistry Pyridine Materials Chemistry Physical and Theoretical Chemistry 0210 nano-technology Single crystal |
| Zdroj: | Inorganic Chemistry Communications. 105:188-193 |
| ISSN: | 1387-7003 |
| DOI: | 10.1016/j.inoche.2019.04.043 |
| Popis: | Three new lanthanide complexes based on a nitronyl nitroxide radical [Ln(hfac)3(NIT3Ph3Py)]2 (Ln = Dy(1), Tb(2), Gd(3); hfac = hexafluoroacetylacetonate, NIT3Ph3Py = 2-(3′-(3″-pyridyl)-phenyl)-4,4,5,5- tetramethylimidazoline-1-oxyl-3-oxide) have been successfully synthesized, characterized structurally and magnetically. Single crystal X-ray diffraction analysis reveals that complexes 1–3 are isomorphous in which NIT3Ph3Py acts as a bridging ligand linking two Ln(III) ions through the nitrogen atom of pyridine ring and the oxygen atom of N O group to form a four-spin system. The magnetic studies reveal that the ferromagnetic interactions between the Ln(III) ions and nitronyl nitroxide radicals in the complexes. Moreover, alternating current (ac) magnetic susceptibilities show that Dy(III) complex exhibits frequency-dependent signals at low temperature. |
| Databáze: | OpenAIRE |
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