2026-05-07T08:25:37Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/68172022-08-26T00:05:14Zcom_10259_4363com_10259_5086com_10259_2604com_10259_4354col_10259_4364col_10259_4355

Cuéllar, Elena 95e50988-4f54-4e44-8802-bc0534b2d036 600 Pastor, Laura df047cf8-727f-439d-afa4-7b122d237367 600 García Herbosa, Gabriel 205 600 0000-0002-2863-1272 Nganga, John fbb9ee8c-29b2-498d-8371-4a2364a8397d 600 Angeles-Boza, Alfredo M. 3ee47c52-5e60-442b-9b4d-06afcd1b7b02 600 Diez Varga, Alberto 9c89e938-e737-4d26-8670-1597cd80ae7a 600 Torroba Pérez, Tomás 554 600 Martín-Alvarez, Jose M. 4fba3e38-8889-454b-842d-c73dc982b21e 500 Miguel, Daniel 5b04d422-8916-42aa-ad97-208de7609bdc 500 Villafañe, Fernando 0398b255-5aef-4584-b325-f2a79a7ae15a 500 2022-08-25T10:54:43Z 2022-08-25T10:54:43Z 2020-12 0020-1669 http://hdl.handle.net/10259/6817 10.1021/acs.inorgchem.0c02716 1520-510X New cis-(1,2-azole)-aquo bis(2,2′-bipyridyl)ruthenium(II) (1,2-azole (az*H) = pzH (pyrazole), dmpzH (3,5-dimethylpyrazole), and indzH (indazole)) complexes are synthesized via chlorido abstraction from cis-[Ru(bipy)2Cl(az*H)]OTf. The latter are obtained from cis-[Ru(bipy)2Cl2] after the subsequent coordination of the 1,2-azole. All the compounds are characterized by 1H, 13C, 15N NMR spectroscopy as well as IR spectroscopy. Two chlorido complexes (pzH and indzH) and two aquo complexes (indzH and dmpzH) are also characterized by X-ray diffraction. Photophysical and electrochemical studies were carried out on all the complexes. The photophysical data support the phosphorescence of the complexes. The electrochemical behavior of all the complexes in an Ar atmosphere indicate that the oxidation processes assigned to Ru(II) → Ru(III) occurs at higher potentials in the aquo complexes. The reduction processes under Ar lead to several waves, indicating that the complexes undergo successive electron-transfer reductions that are centered in the bipy ligands. The first electron reduction is reversible. The electrochemical behavior in CO2 media is consistent with CO2 electrocatalyzed reduction, where the values of the catalytic activity [icat(CO2)/ip(Ar)] ranged from 2.9 to 10.8. Controlled potential electrolysis of the chlorido and aquo complexes affords CO and formic acid, with the latter as the major product after 2 h. Photocatalytic experiments in MeCN with [Ru(bipy)3]Cl2 as the photosensitizer and TEOA as the electron donor, which were irradiated with >300 nm light for 24 h, led to CO and HCOOH as the main reduction products, achieving a combined turnover number (TONCO+HCOO–) as high as 107 for 2c after 24 h of irradiation. Junta de Castilla y León (ref. VA130618). E.C. thanks the UVa for her grant. The authors in Valladolid gratefully acknowledge financial support from the Spanish MINECO, Spain (PGC2018-099470-B-I00) and Junta de Castilla y León (VA130618), and the authors in Burgos gratefully acknowledge financial support from the Junta de Castilla y León, Consejería de Educación y Cultura and Fondo Social Europeo (Project BU263P18). A.M.A.-B. is grateful for support from the National Science Foundation CAREER Grant (CHE-1652606). application/pdf eng American Chemical Society Inorganic Chemistry. 2021, V. 60, n. 2, p. 692–704 https://dx.doi.org/10.1021/acs.inorgchem.0c02716 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-099470-B-I00/ES/APLICACION DE MOLECULAS NANOGRAFENICAS EN LA MEJORA DE LAS PROPIEDADES OPTOLELECTRONICAS DE CELULAS SOLARES ORGANICAS info:eu-repo/grantAgreement/Junta de Castilla y León//VA130618 info:eu-repo/grantAgreement/Junta de Castilla y León//BU263P18 info:eu-repo/grantAgreement/NSF/CAREER Grant/CHE-1652606 Catalytic reactions Electrochemical reduction Ligands Oxidation Redox reactions Química inorgánica Chemistry, Inorganic (1,2-Azole)bis(bipyridyl)ruthenium(II) Complexes: Electrochemistry, Luminescent Properties, And Electro- And Photocatalysts for CO2 Reduction info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess Inorganic Chemistry 60 2 692 704 THUMBNAIL Cuellar-ic_2020.pdf.jpg Cuellar-ic_2020.pdf.jpg IM Thumbnail image/jpeg 4720 https://riubu.ubu.es/bitstream/10259/6817/3/Cuellar-ic_2020.pdf.jpg db2f830fae4157a2f1a9050f49e2d717 MD5 3 LICENSE license.txt license.txt text/plain; charset=utf-8 999 https://riubu.ubu.es/bitstream/10259/6817/2/license.txt b295bcbce42e2caabeb0c623d3860c06 MD5 2 ORIGINAL Cuellar-ic_2020.pdf Cuellar-ic_2020.pdf application/pdf 1470561 https://riubu.ubu.es/bitstream/10259/6817/1/Cuellar-ic_2020.pdf c041f1aadd8d05252052e4a184fb176f MD5 1 10259/6817 oai:riubu.ubu.es:10259/6817 2022-08-26 02:05:14.533 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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