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Título : Reaction of non-symmetric schiff base metallo-ligand complexes possessing an oxime function with Ln ions
Autor : Costes, Jean Pierre .
Dahan, Françoise .
Dupuis, Arnaud .
Shova, Sergiu .
García Tojal, Javier
Publicado en: Inorganics. 2018, V. 6, n. 1, 33
Editorial : MDPI
Fecha de publicación : mar-2018
ISSN : 2304-6740
DOI: 10.3390/inorganics6010033
Resumen : The preparation of non-symmetric Schiff base ligands possessing one oxime function that is associated to a second function such as pyrrole or phenol function is first described. These ligands, which possess inner N4 or N3O coordination sites, allow formation of cationic or neutral non-symmetric CuII or NiII metallo-ligand complexes under their mono- or di-deprotonated forms. In presence of Lanthanide ions the neutral complexes do not coordinate to the LnIII ions, the oxygen atom of the oxime function being only hydrogen-bonded to a water molecule that is linked to the LnIII ion. This surprising behavior allows for the isolation of LnIII ions by non-interacting metal complexes. Reaction of cationic NiII complexes possessing a protonated oxime function with LnIII ions leads to the formation of original and dianionic (Gd(NO3)5)2− entities that are well separated from each other. This work highlights the preparation of well isolated mononuclear LnIII entities into a matrix of diamagnetic metal complexes. These new complexes complete our previous work dealing with the complexing ability of the oxime function toward Lanthanide ions. It could open the way to the synthesis of new entities with interesting properties, such as single-ion magnets for example
Palabras clave: non-symmetric Schiff bases
oxime function
3d–4f complexes
structural determinations
Materia: Química inorgánica
Chemistry, Inorganic
Licencia: https://creativecommons.org/licenses/by/4.0/
URI : http://hdl.handle.net/10259/4964
Versión del editor: https://doi.org/10.3390/inorganics6010033
Aparece en las colecciones: Artículos MOWUTO

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