Tetranuclear Lanthanide Complexes Supported by Hydroxyquinoline-Calix[4]arene-Ligands: Synthesis, Structure, and Magnetic Properties of [Ln4(H3L)2(µ-OH)2(NO3)4] (Ln = Tb, Dy, Yb) and [Dy2(H4L)2(NO3)](NO3)

Research output: Contribution to journalResearch articleContributedpeer-review


  • Astrid Jäschke - , Leipzig University, Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • Thorsten Stumpf - , Chair of Radiochemistry/Radioecology, Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • Azar Aliabadi - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Bernd Büchner - , Chair of Experimental Solid State Physics, Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Vladislav Kataev - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Torsten Hahn - , Freiberg University of Mining and Technology (Author)
  • Jens Kortus - , Freiberg University of Mining and Technology (Author)
  • Berthold Kersting - , Leipzig University (Author)


The coordination behavior of the calixarene-based N4O4 donor ligand H6L bearing two pendant 8-hydroxyquinoline-2-hydrazone arms towards the lanthanide ions Tb3+, Dy3+, and Yb3+ has been investigated. H6L was found to support tetra- and dinuclear mixed-ligand complexes with the pendant hydrazone units in a deprotonated enolate and/or a neutral amide form. The direct reaction of H6L with Ln(NO3)3(H2O)6 and NEt3 in a 1:1:2 molar ratio leads to tetranuclear [Ln4(H3L)2(µ-OH)22-NO3)4] complexes {Ln = Tb (1), Dy (2), Yb (3)} containing a rectangular arrangement of four eight-coordinate Ln3+ ions bridged by two hydroxido- and four quinolinolato-O atoms as established by X-ray crystallography. Degradation of 2 occurs upon addition of further equiv. of H6L to give dinuclear [Dy2(H4L)(NO3)2(MeCN)2]NO3 (4) with eight- and ten-coordinated Dy3+ ions. ESI-MS studies reveal that such dinuclear species exist also in the solution state. The results of variable temperature direct and alternating current magnetic susceptibility measurements for 1–4 and high frequency EPR study on 4 are also reported.


Original languageEnglish
Pages (from-to)4203-4214
Number of pages12
JournalEuropean journal of inorganic chemistry
Issue number44
Publication statusPublished - 30 Nov 2020


ASJC Scopus subject areas


  • Hydroxyquinoline ligands, Lanthanide complexes, Magnetic properties, Pendant calix[4]arenes, Structure elucidation