000078938 001__ 78938
000078938 005__ 20231006143253.0
000078938 0247_ $$2doi$$a10.1039/c8cy02306a
000078938 0248_ $$2sideral$$a111288
000078938 037__ $$aART-2019-111288
000078938 041__ $$aeng
000078938 100__ $$0(orcid)0000-0002-5465-4873$$aPuerta-Oteo, R.
000078938 245__ $$aMolecular water oxidation catalysis by zwitterionic carboxylate bridge-functionalized bis-NHC iridium complexes
000078938 260__ $$c2019
000078938 5060_ $$aAccess copy available to the general public$$fUnrestricted
000078938 5203_ $$aZwitterionic water-soluble [Cp*Ir III Cl{(MeIm) 2 CHCOO}] and [Ir I (cod){(MeIm) 2 CHCOO}] complexes featuring a carboxylate bridge-functionalized bis-N-heterocyclic carbene ligand efficiently catalyzed water oxidation using ammonium cerium(iv) nitrate (CAN) or sodium periodate as sacrificial oxidants. Excellent yields with TOF 50 numbers up to 1000 h -1 have been achieved using CAN as electron acceptor at [CAN]/[Ir] ratios higher than 700. The investigation of the reaction mechanism by UV-vis seems to evidence that both catalyst precursors are transformed into the same active molecular species resulting from the degradation of the hydrocarbon ligands which is partially supported by the similarity of the oxygen evolution profiles at moderate oxidant/catalyst ratios for both catalyst precursors and the same chemical oxidant. In addition, DLS studies provide evidence for the participation of homogeneous iridium molecular species as intermediates likely stabilized by the carboxylate-functionalized bis-NHC ligand.
000078938 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FSE/E42-17R$$9info:eu-repo/grantAgreement/ES/MINECO/BES-2011-045364$$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/CTQ2013-42532-P$$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/CTQ2016-75884-P
000078938 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000078938 590__ $$a5.721$$b2019
000078938 591__ $$aCHEMISTRY, PHYSICAL$$b41 / 159 = 0.258$$c2019$$dQ2$$eT1
000078938 592__ $$a1.579$$b2019
000078938 593__ $$aCatalysis$$c2019$$dQ1
000078938 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000078938 700__ $$0(orcid)0000-0002-0545-9107$$aJiménez, M.V.$$uUniversidad de Zaragoza
000078938 700__ $$0(orcid)0000-0002-3327-0918$$aPérez-Torrente, J.J.$$uUniversidad de Zaragoza
000078938 7102_ $$12010$$2760$$aUniversidad de Zaragoza$$bDpto. Química Inorgánica$$cÁrea Química Inorgánica
000078938 773__ $$g9, 6 (2019), 1437-1450$$pCATALYSIS SCIENCE & TECHNOLOGY$$tCatalysis Science and Technology$$x2044-4753
000078938 8564_ $$s958525$$uhttps://zaguan.unizar.es/record/78938/files/texto_completo.pdf$$yVersión publicada
000078938 8564_ $$s14379$$uhttps://zaguan.unizar.es/record/78938/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000078938 909CO $$ooai:zaguan.unizar.es:78938$$particulos$$pdriver
000078938 951__ $$a2023-10-06-14:06:11
000078938 980__ $$aARTICLE