1. Syntheses, characterisation, magnetism and photoluminescence of a homodinuclear Ln(III)-Schiff base family
- Author
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Joy Chakraborty, Raymond Ziessel, Loïc J. Charbonnière, M. S. El Fallah, Luca M. Carrella, Aurkie Ray, Eva Rentschler, Dominique Luneau, Guillaume Pilet, Samiran Mitra, Guillaume Chastanet, Department of Chemistry, Jadavpur University, Laboratoire des Multimatériaux et Interfaces (LMI), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de chimie moléculaire (LCM), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Insitut für Anorganische und Analytische Chemie, Johannes Gutenberg - Universität Mainz (JGU), and Departament de Quimica Inorganica, Universitat de Barcelona
- Subjects
Lanthanide ,Schiff base ,010405 organic chemistry ,Stereochemistry ,Ligand ,Metal ions in aqueous solution ,[CHIM.MATE]Chemical Sciences/Material chemistry ,010402 general chemistry ,01 natural sciences ,Magnetic susceptibility ,0104 chemical sciences ,Inorganic Chemistry ,Metal ,chemistry.chemical_compound ,Crystallography ,chemistry ,visual_art ,Diethylenetriamine ,[CHIM.CRIS]Chemical Sciences/Cristallography ,visual_art.visual_art_medium ,[CHIM]Chemical Sciences ,Single crystal - Abstract
A novel family of homodinuclear complexes of the general formula [Ln(2)L(2)(X)(2)] (where Ln = Nd(3+), Pr(3+), Sm(3+) and Tb(3+) for 1, 2, 3 and 4, respectively and X, the coordinated NO(3)(-) or Cl(-) anion) has been synthesised from the corresponding lanthanide(III) salts with the pentadentate dianionic Schiff base ligand, H(2)L [N(1),N(3)-bis(salicylideneimino)diethylenetriamine], that exhibits a N(3)O(2) donor set. Single crystal X-ray diffraction studies evidenced the isostructurality of this family of centrosymmetric neutral dinuclear entities where the Ln(III) metal centres are coupled together by two phenolato oxygen atoms belonging to two units of ligand (H(2)L). Interestingly, the two other phenolato groups of H(2)L are mono-coordinated to the metal ions. Temperature dependence (2-300K) magnetic susceptibility studies suggest the presence of an antiferromagnetic interaction operating via double phenolato bridges. Photoluminescence activities of the complexes have been studied and compared with their precursor ligand. All the complexes have been characterised with microanalytical and several spectroscopic techniques.
- Published
- 2009
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