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Abstract:

trans-[(NC)Ru(py) 4(μ-CN)Ru(py) 4(NO)] 3+ (py = pyridine) is a stable species in aqueous solution. It displays an intense absorption in the visible region of the spectrum (λ max = 518 nm; ε max = 6100 M -1 cm -1), which turns this compound into a promising agent for the photodelivery of NO. The quantum yield for the photodelivery process resulting from irradiation with 455 nm visible light was found experimentally to be (0.06 ± 0.01)×10 -3 mol einstein -1, almost 3 orders of magnitude smaller than that in the closely related cis-[RuL(NH 3) 4(μ-pz) Ru(bpy) 2(NO)] 5+ species (L = NH 3 or pyridine, pz = pyrazine, bpy = 2,2′-bipyridine; φ NO = 0.02-0.04 mol einstein -1 depending on L) and also much smaller than the one in the mononuclear compound trans-[ClRu(py) 4(NO)] 2+ (φ NO = (1.63 ± 0.04)×10 -3 mol einstein -1). DFT computations provide an electronic structure picture of the photoactive excited states that helps to understand this apparently abnormal behavior. © 2010 American Chemical Society.

Registro:

Documento: Artículo
Título:Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO
Autor:De Candia, A.G.; Marcolongo, J.P.; Etchenique, R.; Slep, L.D.
Filiación:Departamento de Química Inorgánica, Analítica y Química Física, Ciudad Universitaria Pabellón 2, 3er Piso, C1428EHA Buenos Aires, Argentina
Palabras clave:nitric oxide; organometallic compound; ruthenium; article; chemical structure; chemistry; conformation; drug design; electron; oxidation reduction reaction; photochemistry; quantum theory; stereoisomerism; Drug Design; Electrons; Models, Molecular; Molecular Conformation; Nitric Oxide; Organometallic Compounds; Oxidation-Reduction; Photochemical Processes; Quantum Theory; Ruthenium; Stereoisomerism
Año:2010
Volumen:49
Número:15
Página de inicio:6925
Página de fin:6930
DOI: http://dx.doi.org/10.1021/ic100491g
Título revista:Inorganic Chemistry
Título revista abreviado:Inorg. Chem.
ISSN:00201669
CODEN:INOCA
CAS:nitric oxide, 10102-43-9; ruthenium, 7440-18-8; Nitric Oxide, 10102-43-9; Organometallic Compounds; Ruthenium, 7440-18-8
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201669_v49_n15_p6925_DeCandia

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Citas:

---------- APA ----------
De Candia, A.G., Marcolongo, J.P., Etchenique, R. & Slep, L.D. (2010) . Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO. Inorganic Chemistry, 49(15), 6925-6930.
http://dx.doi.org/10.1021/ic100491g
---------- CHICAGO ----------
De Candia, A.G., Marcolongo, J.P., Etchenique, R., Slep, L.D. "Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO" . Inorganic Chemistry 49, no. 15 (2010) : 6925-6930.
http://dx.doi.org/10.1021/ic100491g
---------- MLA ----------
De Candia, A.G., Marcolongo, J.P., Etchenique, R., Slep, L.D. "Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO" . Inorganic Chemistry, vol. 49, no. 15, 2010, pp. 6925-6930.
http://dx.doi.org/10.1021/ic100491g
---------- VANCOUVER ----------
De Candia, A.G., Marcolongo, J.P., Etchenique, R., Slep, L.D. Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO. Inorg. Chem. 2010;49(15):6925-6930.
http://dx.doi.org/10.1021/ic100491g