Two 3d–4f nanomagnets formed via a two-step in situ reaction of picolinaldehyde
| Autor: | Quan-Wen Li, Ji-Dong Leng, Daniel Aravena, Ming-Liang Tong, Wei-Quan Lin, Eliseo Ruiz, Silvia Gómez-Coca, Yan-Cong Chen, Jun-Liang Liu |
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| Rok vydání: | 2013 |
| Předmět: |
Magnetic moment
Gadolinium Metals and Alloys chemistry.chemical_element General Chemistry Nanomagnet Catalysis Surfaces Coatings and Films Electronic Optical and Magnetic Materials Adduct Crystallography chemistry Magnet X-ray crystallography Materials Chemistry Ceramics and Composites Dysprosium Magnetic refrigeration |
| Zdroj: | Chemical Communications. 49:6549 |
| ISSN: | 1364-548X 1359-7345 |
| Popis: | Two 3d-4f nanomagnets, [Dy(III)2Cu(II)7] (1) and [Gd(III)6Cu(II)12] (2), are synthesized under a two-step in situ reaction of picolinaldehyde. Not only the final adduct (hemiacetal), but also the intermediate (gem-diol) are "visualized" by X-ray single crystal diffraction. The Dy complex behaves as a single-molecule magnet, while the Gd complex exhibits a significant magnetocaloric effect. Theoretical calculations are employed to obtain the orientation of the magnetic moments and the magnetic exchange. |
| Databáze: | OpenAIRE |
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