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Abstract:

We report here the synthesis and properties of a family of mixed-valence cyanide-bridged dinuclear complex ions trans-[(L′L4Ru II(μ-NC)FeIII(CN)5]- (with L = pyridine or 4-dimethylaminopyridine (dmap) and L′ = pyridine, 4-methoxypyridine (meopy) or 4-dimethylaminopyridine)) whose properties could be adjusted smoothly by changing the acceptor properties of the solvent and the σ donor properties of the L′ pyridine ligand. In solution these complexes exhibit an intense solvent-dependent MM′CT (RuII → FeIII) absorption in the near infrared region. Analysis of this band in different complexes and solvents suggests an enhanced interaction as the energies of the metal centers come closer. From this trend the anion trans-[(dmap)5Ru(μ-NC)Fe(CN)5]- (dmap = 4-dimethylaminopyridine) in water is expected to belong to the class II-III, but its spectral properties indicates a ground state with Ru(III)-Fe(II) character. The stabilization of this electronic isomer is probably related to the better donor properties of the hexacyanoferrate(II) moiety and its stronger interaction with water. © 2011 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Exploring the properties of mixed valence cyanide bridged dinuclear complexes: Solvent stabilization of electronic isomers
Autor:Rossi, M.B.; Alborés, P.; Baraldo, L.M.
Filiación:Departamento de Química Analítica, Inorgánica y Química Física, Facultad de Ciencias Exactas y Naturales, Pabellón 2, C1428EHA Buenos Aires, Argentina
Palabras clave:Cyanide bridged complexes; Intervalence charge transfer; Metal-metal interaction; Mixed valence complexes; Solvent effect; Spectroelectrochemistry
Año:2011
Volumen:374
Número:1
Página de inicio:334
Página de fin:340
DOI: http://dx.doi.org/10.1016/j.ica.2011.03.032
Título revista:Inorganica Chimica Acta
Título revista abreviado:Inorg. Chim. Acta
ISSN:00201693
CODEN:ICHAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201693_v374_n1_p334_Rossi

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Citas:

---------- APA ----------
Rossi, M.B., Alborés, P. & Baraldo, L.M. (2011) . Exploring the properties of mixed valence cyanide bridged dinuclear complexes: Solvent stabilization of electronic isomers. Inorganica Chimica Acta, 374(1), 334-340.
http://dx.doi.org/10.1016/j.ica.2011.03.032
---------- CHICAGO ----------
Rossi, M.B., Alborés, P., Baraldo, L.M. "Exploring the properties of mixed valence cyanide bridged dinuclear complexes: Solvent stabilization of electronic isomers" . Inorganica Chimica Acta 374, no. 1 (2011) : 334-340.
http://dx.doi.org/10.1016/j.ica.2011.03.032
---------- MLA ----------
Rossi, M.B., Alborés, P., Baraldo, L.M. "Exploring the properties of mixed valence cyanide bridged dinuclear complexes: Solvent stabilization of electronic isomers" . Inorganica Chimica Acta, vol. 374, no. 1, 2011, pp. 334-340.
http://dx.doi.org/10.1016/j.ica.2011.03.032
---------- VANCOUVER ----------
Rossi, M.B., Alborés, P., Baraldo, L.M. Exploring the properties of mixed valence cyanide bridged dinuclear complexes: Solvent stabilization of electronic isomers. Inorg. Chim. Acta. 2011;374(1):334-340.
http://dx.doi.org/10.1016/j.ica.2011.03.032