title: Two 3d-4f nanomagnets formed via a two-step in situ reaction of picolinaldehyde.
abstract: 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.
authors.affiliation: Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, 510275 Guangzhou, PR China.
authors.forename: Jun-Liang
authors.initials: JL
authors.lastname: Liu
authors.forename: Yan-Cong
authors.initials: YC
authors.lastname: Chen
authors.forename: Quan-Wen
authors.initials: QW
authors.lastname: Li
authors.forename: Silvia
authors.initials: S
authors.lastname: Gómez-Coca
authors.forename: Daniel
authors.initials: D
authors.lastname: Aravena
authors.forename: Eliseo
authors.initials: E
authors.lastname: Ruiz
authors.forename: Wei-Quan
authors.initials: WQ
authors.lastname: Lin
authors.forename: Ji-Dong
authors.initials: JD
authors.lastname: Leng
authors.forename: Ming-Liang
authors.initials: ML
authors.lastname: Tong