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dc.contributor.authorShunichi Fukuzumi*
dc.date.accessioned2016-08-28T10:08:10Z-
dc.date.available2016-08-28T10:08:10Z-
dc.date.issued2013*
dc.identifier.issn1477-9226*
dc.identifier.otherOAK-9546*
dc.identifier.urihttps://dspace.ewha.ac.kr/handle/2015.oak/223258-
dc.description.abstractThe storage and evolution of hydrogen are catalysed by appropriate metal hydride complexes. Hydrogenation of carbon dioxide by hydrogen is catalysed by a [C,N] cyclometalated organoiridium complex, [IrIII(Cp*)(4-(1H- pyrazol-1-yl-κN2)benzoic acid-κC3)(OH 2)]2SO4 [Ir-OH2]2SO 4, under atmospheric pressure of H2 and CO2 in weakly basic water (pH 7.5) at room temperature. The reverse reaction, i.e., hydrogen evolution from formate, is also catalysed by [Ir-OH2] + in acidic water (pH 2.8) at room temperature. Thus, interconversion between hydrogen and formic acid in water at ambient temperature and pressure has been achieved by using [Ir-OH2]+ as an efficient catalyst in both directions depending on pH. The Ir complex [Ir-OH 2]+ also catalyses regioselective hydrogenation of the oxidised form of β-nicotinamide adenine dinucleotide (NAD+) to produce the 1,4-reduced form (NADH) under atmospheric pressure of H2 at room temperature in weakly basic water. In weakly acidic water, the complex [Ir-OH2]+ also catalyses the reverse reaction, i.e., hydrogen evolution from NADH to produce NAD+ at room temperature. Thus, interconversion between NADH (and H+) and NAD+ (and H2) has also been achieved by using [Ir-OH2]+ as an efficient catalyst and by changing pH. The iridium hydride complex formed by the reduction of [Ir-OH2]+ by H2 and NADH is responsible for the hydrogen evolution. Photoirradiation (λ > 330 nm) of an aqueous solution of the Ir-hydride complex produced by the reduction of [Ir-OH2]+ with alcohols resulted in the quantitative conversion to a unique [C,C] cyclometalated Ir-hydride complex, which can catalyse hydrogen evolution from alcohols in a basic aqueous solution (pH 11.9). The catalytic mechanisms of the hydrogen storage and evolution are discussed by focusing on the reactivity of Ir-hydride complexes. © The Royal Society of Chemistry 2013.*
dc.languageEnglish*
dc.titleHydrogen storage and evolution catalysed by metal hydride complexes*
dc.typeReview*
dc.relation.issue1*
dc.relation.volume42*
dc.relation.indexSCI*
dc.relation.indexSCIE*
dc.relation.indexSCOPUS*
dc.relation.startpage18*
dc.relation.lastpage28*
dc.relation.journaltitleDalton Transactions*
dc.identifier.doi10.1039/c2dt31823g*
dc.identifier.wosidWOS:000312218100002*
dc.identifier.scopusid2-s2.0-84870528619*
dc.author.googleFukuzumi S.*
dc.author.googleSuenobu T.*
dc.contributor.scopusidShunichi Fukuzumi(35430038100;57375583300)*
dc.date.modifydate20220701081001*
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자연과학대학 > 화학·나노과학전공 > Journal papers
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