Two 3d-4f nanomagnets formed via a two-step in situ reaction of picolinaldehyde

Two 3d-4f nanomagnets formed via a two-step in situ reaction of picolinaldehyde

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 b...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2013-07, Vol.49 (58), p.6549-6551
Hauptverfasser: Liu, Jun-Liang, Chen, Yan-Cong, Li, Quan-Wen, Gómez-Coca, Silvia, Aravena, Daniel, Ruiz, Eliseo, Lin, Wei-Quan, Leng, Ji-Dong, Tong, Ming-Liang
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Sprache:eng
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Zusammenfassung: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.
ISSN:1359-7345
1364-548X
DOI:10.1039/c3cc43200a