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...
Guardado en:
| Autores principales: | , , , |
|---|---|
| Publicado: |
2010
|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201669_v49_n15_p6925_DeCandia http://hdl.handle.net/20.500.12110/paper_00201669_v49_n15_p6925_DeCandia |
| Aporte de: |
| id |
paper:paper_00201669_v49_n15_p6925_DeCandia |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_00201669_v49_n15_p6925_DeCandia2023-06-08T14:40:38Z 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, Ariel Gustavo Marcolongo, Juan Pablo Etchenique, Roberto Slep, Leonardo Daniel 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. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201669_v49_n15_p6925_DeCandia 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, Ariel Gustavo Marcolongo, Juan Pablo Etchenique, Roberto Slep, Leonardo Daniel 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. |
| author |
De Candia, Ariel Gustavo Marcolongo, Juan Pablo Etchenique, Roberto Slep, Leonardo Daniel |
| author_facet |
De Candia, Ariel Gustavo Marcolongo, Juan Pablo Etchenique, Roberto Slep, Leonardo Daniel |
| author_sort |
De Candia, Ariel Gustavo |
| 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 |
| publishDate |
2010 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201669_v49_n15_p6925_DeCandia http://hdl.handle.net/20.500.12110/paper_00201669_v49_n15_p6925_DeCandia |
| work_keys_str_mv |
AT decandiaarielgustavo widelydifferingphotochemicalbehaviorinrelatedoctahedralruno6compoundsintramolecularredoxisomerismoftheexcitedstatecontrollingthephotodeliveryofno AT marcolongojuanpablo widelydifferingphotochemicalbehaviorinrelatedoctahedralruno6compoundsintramolecularredoxisomerismoftheexcitedstatecontrollingthephotodeliveryofno AT etcheniqueroberto widelydifferingphotochemicalbehaviorinrelatedoctahedralruno6compoundsintramolecularredoxisomerismoftheexcitedstatecontrollingthephotodeliveryofno AT slepleonardodaniel widelydifferingphotochemicalbehaviorinrelatedoctahedralruno6compoundsintramolecularredoxisomerismoftheexcitedstatecontrollingthephotodeliveryofno |
| _version_ |
1768544851424444416 |