2026-08-17T12:42:51Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/68152022-08-24T00:05:45Zcom_10259_4354com_10259_5086com_10259_2604col_10259_4355

00925njm 22002777a 4500 dc Cuéllar, Elena author Diez Varga, Alberto author Torroba Pérez, Tomás author Domingo-Legarda, Pablo author Alemán, José author Cabrera, Silvia author Martín-Alvarez, Jose M. author Miguel, Daniel author Villafañe, Fernando author 2021-05 New 1,2-azolylamidino complexes cis-[Ru(bipy)2(NH═C(R)az*-κ2N,N)](OTf)2 (R = Me, Ph; az* = pz, indz, dmpz) are synthesized via chloride abstraction after a subsequent base-catalyzed coupling of a nitrile with the previously coordinated 1,2-azole. The synthetic procedure allows the easy obtainment of complexes having different electronic and steric 1,2-azoylamidino ligands. All of the compounds have been characterized by 1H, 13C, and 15N NMR and IR spectroscopy and by monocrystal X-ray diffraction. Photophysical studies support their phosphorescence, whereas their electrochemistry reveals reversible RuII/RuIII oxidations between +1.13 and +1.25 V (vs SCE). The complexes have been successfully used as catalysts in the photooxidation of different thioethers, the complex cis-[Ru(bipy)2(NH═C(Me)dmpz-κ2N,N)]2+ showing better catalytic performance in comparison to that of [Ru(bipy)3]2+. Moreover, the significant catalytic performance of the dimethylpyrazolylamidino complex is applied to the preparation of the drug modafinil, which is obtained using ambient oxygen as an oxidant. Finally, mechanistic assays suggest that the oxidation reaction follows a photoredox route via oxygen radical anion formation. 0020-1669 http://hdl.handle.net/10259/6815 10.1021/acs.inorgchem.0c03389 1520-510X Ketones Ligands Materials Nitrogen compounds Oxidation Luminescent cis-Bis(bipyridyl)ruthenium(II) Complexes with 1,2-Azolylamidino Ligands: Photophysical, Electrochemical Studies, and Photocatalytic Oxidation of Thioethers