Study of the luminescent and magnetic properties of a series of heterodinuclear [Zn(II)Ln(III)] complexes.
Inorg Chem
; 50(13): 5879-89, 2011 Jul 04.
Article
en En
| MEDLINE
| ID: mdl-21634383
Herein, we report the synthesis, structural investigation, and magnetic and photophysical properties of a series of 13 [Zn(II)Ln(III)] heterodinuclear complexes, which have been obtained employing a Schiff-base compartmental ligand derived from o-vanillin [H(2)valpn = 1,3-propanediylbis(2-iminomethylene-6-methoxy-phenol)]. The complexes have been synthesized starting from the [Zn(valpn)(H(2)O)] mononuclear compound and the corresponding lanthanide nitrates. The crystallographic investigation indicated two structural types: the first one, [Zn(H(2)O)(valpn)Ln(III)(O(2)NO)(3)], contains 10-coordinated Ln(III) ions, while in the second one, [Zn(ONO(2))(valpn)Ln(III)(H(2)O)(O(2)NO)(2)]·2H(2)O, the rare earth ions are nine-coordinated. The Zn(II) ions always display a square-pyramidal geometry. The first structural type encompasses the larger Ln ions (4f(0)-4f(9)), while the second is found for the smaller ions (4f(8)-4f(11)). The dysprosium derivative crystallizes in both forms. Luminescence studies for the heterodinuclear compounds containing Nd(III), Sm(III), Tb(III), Dy(III), and Yb(III) revealed that the [Zn(valpn)(H(2)O)] moiety acts as an antenna. The magnetic properties for the paramagnetic [Zn(II)Ln(III)] complexes have been investigated.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Compuestos Organometálicos
/
Zinc
/
Elementos de la Serie de los Lantanoides
/
Luminiscencia
/
Magnetismo
Idioma:
En
Revista:
Inorg Chem
Año:
2011
Tipo del documento:
Article
País de afiliación:
Rumanía