Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO

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 quan...

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Autores principales: De Candia, A.G., Marcolongo, J.P., Etchenique, R., Slep, L.D.
Formato: JOUR
Materias:
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
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00201669_v49_n15_p6925_DeCandia
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00201669_v49_n15_p6925_DeCandia
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spelling todo:paper_00201669_v49_n15_p6925_DeCandia2023-10-03T14:17:01Z Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO De Candia, A.G. Marcolongo, J.P. Etchenique, R. Slep, L.D. 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 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. Fil:De Candia, A.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Marcolongo, J.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Etchenique, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Slep, L.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00201669_v49_n15_p6925_DeCandia
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
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
topic_facet 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
description 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.
format JOUR
author De Candia, A.G.
Marcolongo, J.P.
Etchenique, R.
Slep, L.D.
author_facet De Candia, A.G.
Marcolongo, J.P.
Etchenique, R.
Slep, L.D.
author_sort De Candia, A.G.
title Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO
title_short Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO
title_full Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO
title_fullStr Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO
title_full_unstemmed Widely differing photochemical behavior in related octahedral {Ru-NO} 6 compounds: Intramolecular redox isomerism of the excited state controlling the photodelivery of NO
title_sort widely differing photochemical behavior in related octahedral {ru-no} 6 compounds: intramolecular redox isomerism of the excited state controlling the photodelivery of no
url http://hdl.handle.net/20.500.12110/paper_00201669_v49_n15_p6925_DeCandia
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AT etcheniquer widelydifferingphotochemicalbehaviorinrelatedoctahedralruno6compoundsintramolecularredoxisomerismoftheexcitedstatecontrollingthephotodeliveryofno
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