Synthesis, Structure, Spectroscopic Studies and Magnetic Properties of TetrakisGd(lll)5.7-dichloro-8-quinolinate. - Université de Rennes Accéder directement au contenu
Article Dans Une Revue European Journal of Inorganic Chemistry Année : 2008

Synthesis, Structure, Spectroscopic Studies and Magnetic Properties of TetrakisGd(lll)5.7-dichloro-8-quinolinate.

Andrea Caneschi
Flavia Artizzu
  • Fonction : Auteur
Luciano Marchio
  • Fonction : Auteur
Maria-Laura Mercuri
  • Fonction : Auteur
Luca Pilia
  • Fonction : Auteur
Angela Serpe
  • Fonction : Auteur
Paola Deplano
  • Fonction : Auteur

Résumé

The synthesis and structural characterization of the neutral gadolinium tetrakis-type complex with 5,7-dichloro-8-quinolinolato (H5,7ClQ) ligands, [Gd(5,7ClQ)2(H5,7ClQ)2Cl], is reported. The GdIII ion is epta coordinated to one chloride ion and to four ligands: two N,O-chelated monoanions and two as zwitterionic (+NH and O–) monodentate oxygen donors. Electronic and vibrational spectra provide suitable markers to distinguish the presence of deprotonated and protonated ligands. The magnetic behaviour of this compound was in-vestigated and explained by taking into account that π–π stacking interactions between the (H5,7ClQ) ligands give rise to a ferromagnetic interaction between the gadolinium centres. The GdIII derivatives provide magnetic evidence for the presence of stacking interactions, which are usually undetectable in optically active ErIII derivatives.

Dates et versions

hal-00525249 , version 1 (11-10-2010)

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Citer

Kevin Bernot, Andrea Caneschi, Flavia Artizzu, Eugenio Coronado, J.M. Clemente-Juan, et al.. Synthesis, Structure, Spectroscopic Studies and Magnetic Properties of TetrakisGd(lll)5.7-dichloro-8-quinolinate.. European Journal of Inorganic Chemistry, 2008, pp.3820-3826. ⟨10.1002/ejic.200800388⟩. ⟨hal-00525249⟩
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