130334 20240319081012.0 doi 10.1021/acs.inorgchem.2c01973 sideral 130795 ART-2022-130795 eng Gómez España, Alejandra Synthesis and characterization of Ir-(k2-NSi) Species Active toward the solventless hydrolysis of HSiMe(OSiMe3)2 2022 Access copy available to the general public Unrestricted The reaction of [IrH(Cl)(κ2-NSitBu2)(coe)] (1) with 1 equiv of PCy3 (or PHtBu2) gives the species [IrH(Cl)(κ2-NSitBu2)(L)] (L = PCy3, 2a; PHtBu2, 2b), which reacts with 1 equiv of AgOTf to afford [IrH(OTf)(κ2-NSitBu2)(L)] (L = PCy3, 3a and PHtBu2, 3b). Complexes 2a, 2b, 3a, and 3b have been characterized by means of NMR spectroscopy and HR-MS. The solid-state structures of complexes 2a, 2b, and 3a have been determined by X-ray diffraction studies. The reversible coordination of water to 3a, 3b, and 4 to afford the corresponding adduct [IrH(OTf)(κ2-NSitBu2)(L)(H2O)] (L = PCy3, 3a-H2O; PHtBu2, 3b-H2O; coe, 4-H2O) has been demonstrated spectroscopically by NMR studies. The structure of complexes 3b-H2O and 4-H2O have been determined by X-ray diffraction studies. Computational analyses of the interaction between neutral [NSitBu2]• and [Ir(H)L(X)]• fragments in Ir-NSitBu2 species confirm the electron-sharing nature of the Ir–Si bond and the significant role of electrostatics in the interaction between the transition metal fragment and the κ2-NSitBu2 ligand. The activity of Ir-(κ2-NSitBu2) species as catalysts for the hydrolysis of HSiMe(OSiMe3)2 depends on the nature of the ancillary ligands. Thus, while the triflate derivatives are active, the related chloride species show no activity. The best catalytic performance has been obtained when using complexes 3a, with triflate and PCy3 ligands, as a catalyst precursor, which allows the selective obtention of the corresponding silanol. info:eu-repo/grantAgreement/ES/DGA-FSE/E42-20R info:eu-repo/grantAgreement/ES/MICINN/PGC2018-099383-B-I00 info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/RED2018-102387-T info:eu-repo/grantAgreement/ES/MINECO/PID2019-106184GB-I00 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 4.6 2022 CHEMISTRY, INORGANIC & NUCLEAR 5 / 42 = 0.119 2022 Q1 T1 0.997 2022 Chemistry (miscellaneous) 2022 Q1 Physical and Theoretical Chemistry 2022 Q1 Inorganic Chemistry 2022 Q1 8.0 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion García Orduña, Pilar (orcid)0000-0002-7063-1292 Guzmán, Jefferson (orcid)0000-0001-9340-5952 Fernández, Israel Fernández Álvarez, Francisco J. Universidad de Zaragoza (orcid)0000-0002-0497-1969 2010 760 Universidad de Zaragoza Dpto. Química Inorgánica Área Química Inorgánica 61, 41 (2022), 16282-16294 Inorg. chem. Inorganic Chemistry 0020-1669 5061195 http://zaguan.unizar.es/record/130334/files/texto_completo.pdf Versión publicada 2801903 http://zaguan.unizar.es/record/130334/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:130334 articulos driver 2024-03-18-15:13:42 ARTICLE