Cu‐Ln (Ln = Gd, Eu, Sm) Dinuclear Complexes Based on Schiff Base <i>o‐van‐en</i> Ligand: Syntheses, Crystal Structures, and Magnetic Properties

Three new dinuclear complexes [CuCl(o‐van‐en)Ln(H2O)3 Cl]Cl·C2H6O (Ln = Sm (1), Eu (2), Gd (3); H2(o‐van‐en) is the Schiff base formed by 2/1 condensation of o‐vanillin and ethylenediamine) were prepared in a single crystal form by the method of horizontal diffusion. The prepared complexes were char...

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Detalles Bibliográficos
Autores: Košcíková, Andrea, Cernák, Juraj, Falvello, Larry R., Tomás, Milagros, Ara, Irene, Titiš, Ján, Boca, Roman
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:160965
Acceso en línea:http://zaguan.unizar.es/record/160965
Access Level:acceso abierto
Descripción
Sumario:Three new dinuclear complexes [CuCl(o‐van‐en)Ln(H2O)3 Cl]Cl·C2H6O (Ln = Sm (1), Eu (2), Gd (3); H2(o‐van‐en) is the Schiff base formed by 2/1 condensation of o‐vanillin and ethylenediamine) were prepared in a single crystal form by the method of horizontal diffusion. The prepared complexes were characterized by chemical analyses and IR spectroscopy. The three complexes are isostructural and the Cu(II) is situated in the smaller cavities while the larger cavities accommodate larger Ln(III) atoms. The pentacoordination of the Cu(II) atoms is completed by a chlorido ligand in the apical position, while the octacoordination of the Ln(III) atoms is achieved by three additional aqua and one chlorido coligands. AC susceptibility studies have shown that complexes 2 and 3 exhibit field supported slow magnetic relaxation while complex 1 does not display AC activity.

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