Source:http://linkedlifedata.com/resource/pubmed/id/20830398
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
48
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| pubmed:dateCreated |
2010-11-30
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| pubmed:abstractText |
The ruthenium complexes [Ru(bpy)(pbn)(2)](PF(6))(2) ([2](2+); bpy = 2,2'-bipyridine, pbn = 2-(2-pyridyl)benzo[b]-1,5-naphthyridine) and [Ru(pbn)(3)](PF(6))(2) ([3](2+)) were synthesized. Photoirradiation (? > 420 nm) of [2](2+) and [3](2+) in CH(3)CN/triethanolamine (TEOA) brought about proton coupled four- and six-electron reduction of the complexes to produce [Ru(bpy)(pbnH(2))(2)](PF(6))(2) ([2·H(4)](2+); pbnH(2) = 5,10-dihydro-2-(2-pyridyl)benzo[b]-1,5-naphthyridine) and [Ru(pbnH(2))(3)](PF(6))(2) ([3·H(6)](2+)), respectively. The photoexcited [Ru(III)(bpy)(pbn?(-))(pbnH(2))](2+) intermediate is quenched by intermolecular electron transfer from TEOA to Ru(III), while intramolecular transfer from pbnH(2) to Ru(III) is negligible. As a result, novel photochemical four- and six-electron reduction of [2](2+) and [3](2+) is achieved through repetition of the two-electron reduction of the Ru-pbn group. The high efficiency photochemical two-, four- and six-electron reductions of [Ru(bpy)(2)(pbn)](2+) ([1](2+)), [2](2+) and [3](2+), respectively, by taking advantage of proton coupled two electron reduction of NAD(+) analogous type ligands such as pbn opens a general pathway for multi-electron reduction of metal complexes via illumination with visible light.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Dec
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| pubmed:issn |
1477-9234
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| pubmed:author | |
| pubmed:issnType |
Electronic
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| pubmed:day |
28
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| pubmed:volume |
39
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
11526-34
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| pubmed:year |
2010
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| pubmed:articleTitle |
Photoinduced four- and six-electron reduction of mononuclear ruthenium complexes having NAD+ analogous ligands.
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| pubmed:affiliation |
Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan.
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| pubmed:publicationType |
Journal Article
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