RT info:eu-repo/semantics/article
T1 Reaction of non-symmetric schiff base metallo-ligand complexes possessing an oxime function with Ln ions
A1 Costes, Jean Pierre .
A1 Dahan, Françoise .
A1 Dupuis, Arnaud .
A1 Shova, Sergiu .
A1 García Tojal, Javier
K1 non-symmetric Schiff bases
K1 synthesis
K1 oxime function
K1 3d–4f complexes
K1 structural determinations
K1 Química inorgánica
K1 Chemistry, Inorganic
AB 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
PB MDPI
SN 2304-6740
YR 2018
FD 2018-03
LK http://hdl.handle.net/10259/4964
UL http://hdl.handle.net/10259/4964
LA eng
DS Repositorio Institucional de la Universidad de Burgos
RD 25-abr-2024