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Di- or Trinuclear 3d–4f Schiff Base Complexes: The Role of Anions

  1. Jean-Pierre Costes1,
  2. Bruno Donnadieu1,3,
  3. Ruxandra Gheorghe1,4,
  4. Ghenadie Novitchi2,
  5. Jean-Pierre Tuchagues1,
  6. Laure Vendier1

Article first published online: 21 OCT 2008

DOI: 10.1002/ejic.200800750

Issue

European Journal of Inorganic Chemistry

European Journal of Inorganic Chemistry

Volume 2008, Issue 33, pages 5235–5244, November 2008

Additional Information

How to Cite

Costes, J.-P., Donnadieu, B., Gheorghe, R., Novitchi, G., Tuchagues, J.-P. and Vendier, L. (2008), Di- or Trinuclear 3d–4f Schiff Base Complexes: The Role of Anions. Eur. J. Inorg. Chem., 2008: 5235–5244. doi: 10.1002/ejic.200800750

Author Information

  1. 1

    Laboratoire de Chimie de Coordination du CNRS, UPR 8241, liée par conventions à l'Université Paul Sabatier et à l'Institut National Polytechnique de Toulouse, 205 route de Narbonne, 31077 Toulouse Cedex, France, Fax: +33-5-61553003

  2. 2

    Institute of Chemistry, Academy of Sciences of Moldova, Academiei str. 3, 2028 Chisinau, Moldova

  3. 3

    Present address: Department of Chemistry, University of California at Riverside, Riverside, CA 92521, USA

  4. 4

    Present address: University of Bucharest, Faculty of Chemistry, Inorganic Chemistry Laboratory, Str. Dumbrava Rosie nr. 23, 020464 Bucharest, Romania

Publication History

  1. Issue published online: 11 NOV 2008
  2. Article first published online: 21 OCT 2008
  3. Manuscript Received: 29 JUL 2008

Funded by

  • NATO

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Keywords:

  • Anions;
  • Schiff bases;
  • Transition metals;
  • Lanthanides;
  • Heterometallic complexes

Abstract

We demonstrate through structural, spectroscopic, and magnetic studies that the main factors governing the nuclearity of M–Gd (M = Cu, Ni) complexes derived from compartmental Schiff base ligands are the different affinities of the lanthanide ions for the potential ligands and anions present in the reaction medium. In the eight examples studied, there is competition between the tetradentate O2O2 coordination site of the polydentate ligand and the anionic entities brought by the gadolinium salts. The strong affinity of nitrato anions for lanthanides yields dinuclear complexes and prevents formation of trinuclear entities, whereas the use of poorly coordinating anions such as triflates may yield either dinuclear or trinuclear complexes, depending on the 3d/4f ratio.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

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