Mostrar o rexistro simple do ítem

dc.contributor.authorRouco, Lara
dc.contributor.authorFernández-García, M. Isabel
dc.contributor.authorPedrido, Rosa
dc.contributor.authorBotana, Luis M.
dc.contributor.authorEsteban-Gómez, David
dc.contributor.authorPlatas-Iglesias, Carlos
dc.contributor.authorManeiro, Marcelino
dc.date.accessioned2018-09-28T11:25:00Z
dc.date.available2018-09-28T11:25:00Z
dc.date.issued2018-09-07
dc.identifier.citationRouco, L.; Fernández-García, M.I.; Pedrido, R.; Botana, L.M.; Esteban-Gómez, D.; Platas-Iglesias, C.; Maneiro, M. Modeling the OEC with Two New Biomimetic Models: Preparations, Structural Characterization, and Water Photolysis Studies of a Ba–Mn Box Type Complex and a Mn4N6 Planar-Diamond Cluster. Catalysts 2018, 8, 382.es_ES
dc.identifier.issn2073-4344
dc.identifier.urihttp://hdl.handle.net/2183/21084
dc.description.abstract[Abstract] The oxygen-evolving complex (OEC) is the native enzyme that catalyzes the oxidation of water in natural photosynthesis. Two new classes of manganese cluster complexes of formula Ba2Mn2L12(H3L1)2(CH3OH)4 1 and Mn4L26Cl2 2 were prepared (H4L1 = N,N′-(ethane-1,2-diyl)bis(2-hydroxybenzamide); L2 = methyl picolinimidate) and characterized by standard techniques including microanalysis, IR spectroscopy, ESI spectrometry, and magnetic susceptibility measurements. X-ray diffraction studies of these complexes revealed (i) a box-type structure for 1 formed by two redox-active manganese(III) ions and two barium(II) ions connected by two bridging bisamido-bisphenoxy ligand molecules; and (ii) a planar-diamond array for Mn4N6 cluster 2 where the picolinimidates act as chelating ligands through the two nitrogen atoms. The ability of 1 and 2 to split water has been studied by means of water photolysis experiments. In these experiments, the oxygen evolution was measured in aqueous media in the presence of p-benzoquinone (acting as the hydrogen acceptor), the reduction of which was followed by UV-spectroscopy. The relevant photolytic activity found for 1 is in contrast to the inactivity of 2 in the photolytic experiments. This different behavior is discussed on the basis of the structure of the biomimetic models and the proposed reaction mechanism for this process supported by DFT calculations.es_ES
dc.description.sponsorshipXunta de Galicia; GRC2014/025es_ES
dc.description.sponsorshipXunta de Galicia; ED431D 2017/01es_ES
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.relation.urihttps://doi.org/10.3390/catal8090382es_ES
dc.rightsAtribución 3.0 Españaes_ES
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subjectArtificial photosynthesises_ES
dc.subjectPhotocatalystes_ES
dc.subjectWater splittinges_ES
dc.subjectManganesees_ES
dc.titleModeling the OEC with two new biomimetic models: preparations, structural characterization, and water photolysis studies of a Ba–Mn box type complex and a Mn4N6 planar-diamond clusteres_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.accessinfo:eu-repo/semantics/openAccesses_ES
UDC.journalTitleCatalystses_ES
UDC.volume8es_ES
UDC.issue9es_ES
UDC.startPage382es_ES


Ficheiros no ítem

Thumbnail
Thumbnail

Este ítem aparece na(s) seguinte(s) colección(s)

Mostrar o rexistro simple do ítem