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- Title
Synthesis, Structures, and Magnetic Properties of Binuclear [CrLn] (Ln = Gd or Dy) and Trinuclear [Cr<sub>2</sub>Ln] (Ln = Gd, Dy, or Tb) Heterometallic Clusters with 2,2-Bipyridine as Ligand.
- Authors
Li, Zhong‐Yi; Wang, Xiao‐Qun; Zhang, Jian‐Jun; Liu, Shu‐Qin; Ni, Jun; Sun, Ying‐Ji
- Abstract
The syntheses, structures, and magnetic properties of two series of Cr-Ln heterometallic clusters based on the 2,2'-bipyridine (bipy) ligand are reported; binuclear [LnCr(bipy)2-(µ2-OH)2(H2O)6](ClO4)4·2H2O {Ln = Gd (1Gd) or Dy (1Dy)} and trinuclear [LnCr2(bipy)4(µ2-OH)4(H2O)4](ClO4)5·H2O {Ln = Gd (2Gd), Dy (2Dy), or Tb (2Tb)}. Their syntheses could be controlled by the amount of lanthanide perchlorate used. The binuclear [CrLn] clusters could be formed with 24 equivalents of Ln(ClO4)3, whereas 12 equivalents of Ln(ClO4)3 gave the trinuclear [Cr2Ln] species with a CrLnCr core. The Cr3+ and Ln3+ ions are bridged by µ2-OH groups in the two systems, and the [Cr2Ln] cluster is further assembled into a 1D supramolecular architecture by weak intermolecular p-p interactions. Magnetic analyses reveal that the Cr···Gd interactions in 1Gd and 2Gd are both antiferromagnetic.
- Subjects
BIPYRIDINIUM compounds; BIPYRIDINE; LIGANDS (Chemistry); PERCHLORATES; RARE earth metals
- Publication
European Journal of Inorganic Chemistry, 2015, Vol 2015, Issue 34, p5702
- ISSN
1434-1948
- Publication type
Article
- DOI
10.1002/ejic.201500786