An electron-rich {RuNO} 6 complex: Trans-[Ru(DMAP) 4(NO)(OH)] 2+ - Structure and reactivity

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The pseudo-octahedral nitrosyl species trans-[Ru(DMAP) 4(NO)(OH)] 2+ [1 2+, DMAP = 4-(dimethylamino)pyridine] was prepared by the reaction between [Ru(DMAP) 5(H 2O)] 2+ and NaNO 2 under mild conditions (room temperature, pH = 6-8), and precipitated with NaBF 4 or NaPF 6. Single-crystal X-ray diffrac...

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Autor principal: Osa Codesido, N.
Otros Autores: De Candia, A.G, Weyhermüller, T., Olabe, J.A, Slep, L.D
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2012
Acceso en línea:Registro en Scopus
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030 |a EJICF 
100 1 |a Osa Codesido, N. 
245 1 3 |a An electron-rich {RuNO} 6 complex: Trans-[Ru(DMAP) 4(NO)(OH)] 2+ - Structure and reactivity 
260 |c 2012 
270 1 0 |m Olabe, J.A.; Departamento de Química Inorgánica, Analítica y Química Física, Ciudad Universitaria, Universidad de Buenos Aires, Pabellón 2, C1428EHA Buenos Aires, Argentina 
506 |2 openaire  |e Política editorial 
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520 3 |a The pseudo-octahedral nitrosyl species trans-[Ru(DMAP) 4(NO)(OH)] 2+ [1 2+, DMAP = 4-(dimethylamino)pyridine] was prepared by the reaction between [Ru(DMAP) 5(H 2O)] 2+ and NaNO 2 under mild conditions (room temperature, pH = 6-8), and precipitated with NaBF 4 or NaPF 6. Single-crystal X-ray diffraction data of 1(BF 4) 2·2H 2O point to a {RuNO} 6 electronic configuration of the cation, although there is a significant deviation from the expected linear arrangement of the RuNO moiety (Ru-N-O angle: 169.3°). The remarkably low wavenumber of the NO stretching band (ν NO) of 1832 cm -1 in the solid state corresponds to an electron-rich ligand environment with strong backbonding interactions between d π metal orbitals and π* NO orbitals of the (formal) NO + (nitrosonium) ligand. Consistently, the complex acts as a poor electrophile: it is extremely unreactive toward OH - and toward the stronger nucleophile cysteine. Cyclic voltammetry (CV) experiments show three reduction processes in acetonitrile. The first one at -0.50 V [vs. Ag/AgCl, KCl(s)] is reversible on the CV time scale. Spectroelectrochemical experiments (IR and UV/Vis) suggest that the reduced complex has a {RuNO} 7 configuration. The ν NO wavenumber of 1603 cm -1 agrees with a reduction mostly centered at the nitrosyl ligand. This species appears to be inert toward substitution in the coordination sphere, and the original {RuNO} 6 ion can be quantitatively recovered upon oxidation. In contrast, further reduction of this species is completely irreversible, even on the CV timescale, which is probably due to the lability of the presumably formed nitroxyl (NO -) ligand. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.  |l eng 
593 |a Departamento de Química Inorgánica, Analítica y Química Física, Ciudad Universitaria, Universidad de Buenos Aires, Pabellón 2, C1428EHA Buenos Aires, Argentina 
593 |a Max-Planck-Institut für Bioanorganische Chemie, Stiftstr. 34-36, 45470 Mülheim, Germany 
690 1 0 |a CYCLIC VOLTAMMETRY 
690 1 0 |a DENSITY FUNCTIONAL CALCULATIONS 
690 1 0 |a ELECTRONIC STRUCTURE 
690 1 0 |a NITROGEN OXIDES 
690 1 0 |a NITROSYL COMPLEXES 
690 1 0 |a RUTHENIUM 
700 1 |a De Candia, A.G. 
700 1 |a Weyhermüller, T. 
700 1 |a Olabe, J.A. 
700 1 |a Slep, L.D. 
773 0 |d 2012  |h pp. 4301-4309  |k n. 27  |p Eur. J. Inorg. Chem.  |x 14341948  |w (AR-BaUEN)CENRE-1604  |t European Journal of Inorganic Chemistry 
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856 4 0 |u https://doi.org/10.1002/ejic.201200413  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_14341948_v_n27_p4301_OsaCodesido  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14341948_v_n27_p4301_OsaCodesido  |y Registro en la Biblioteca Digital 
961 |a paper_14341948_v_n27_p4301_OsaCodesido  |b paper  |c PE 
962 |a info:eu-repo/semantics/article  |a info:ar-repo/semantics/artículo  |b info:eu-repo/semantics/publishedVersion 
999 |c 84320 

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