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| Description
| - The complex dication of the diruthenium(II) compound can be oxidized and reduced in two one-electron steps each. In acetonitrile the odd-electron intermediates{(.mu.-tppz)[Ru(bik)Cl]2}n+, n = 1 and 3, have comproportionation constants of 7x108 and 1x105, respectively. Both exhibit near infrared absorptions, in case of n = 3 the 1640 nm band is attributed to an intervalence charge transfer transition. While the mixed-valent intermediate (n = 3) is EPR silent even at 4 K, the (n = 1) form signal, signifying a diruthenium(II) complex of the tppz.– radical anion.. The mixed-valent {(.mu.-tppz)[Ru(bik)Cl]2}3+ shows a perceptibly broader .nu.CO band, suggesting incomplete valence averaging (partial localization).
- The complex dication of the diruthenium(II) compound can be oxidized and reduced in two one-electron steps each. In acetonitrile the odd-electron intermediates{(.mu.-tppz)[Ru(bik)Cl]2}n+, n = 1 and 3, have comproportionation constants of 7x108 and 1x105, respectively. Both exhibit near infrared absorptions, in case of n = 3 the 1640 nm band is attributed to an intervalence charge transfer transition. While the mixed-valent intermediate (n = 3) is EPR silent even at 4 K, the (n = 1) form signal, signifying a diruthenium(II) complex of the tppz.– radical anion.. The mixed-valent {(.mu.-tppz)[Ru(bik)Cl]2}3+ shows a perceptibly broader .nu.CO band, suggesting incomplete valence averaging (partial localization). (en)
- Komplexní dikation dirutheniuové(II) sloučeniny {(.mu.-tppz)[Ru(bik)Cl]2}(ClO4)2 lze oxidovat i redukovat, vždy ve dvou jednoelektronových krocích. Intermediáty s lichým elektronem,{(.mu.-tppz)[Ru(bik)Cl]2}n+, n = 1 a 3, mají v acetonitrilu komproporcionační konstanty 7x108 a 1x105. Oba vykazují absorbci v blízké infračervené oblasti, v případě n = 3 je pás 1640 nm přiřazen intervalenčnímu přenosu náboje. Zatímco meziprodukt (n = 3) je EPR tichý dokonce při 4 K, forma (n = 1) vykazuje signál odpovídající dirutheniovému(II) komplexu s tppz.- radikálovám aniontem. Komplex se smíšenou valencí {(.mu.-tppz)[Ru(bik)Cl]2}3+ vykazujr znatelně širší .nu.CO pás, naznačující neúplné zprůměrování valence (částečnou lokalizaci). (cs)
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| Title
| - Probing Mixed-Valence in a New tppz-Bridged Diruthenium(III,II) Complex {(.mu.-tppz)[Ru(bik)Cl]2}3+ (tppz=2,3,5,6-Tetrakis(2-pyridyl)pyrazine, bik = 2,2/-Bis(1-methylimidazolyl)ketone): EPR Silence, Intervalence Absorption, and .nu.CO Line Broadening
- Probing Mixed-Valence in a New tppz-Bridged Diruthenium(III,II) Complex {(.mu.-tppz)[Ru(bik)Cl]2}3+ (tppz=2,3,5,6-Tetrakis(2-pyridyl)pyrazine, bik = 2,2/-Bis(1-methylimidazolyl)ketone): EPR Silence, Intervalence Absorption, and .nu.CO Line Broadening (en)
- Výzkum smíšené valence v nových, tppz-přemostěných, dirutheniových(III,II ) komplexech {(.mu.-tppz)[Ru(bik)Cl]2}3+ (tppz=2,3,5,6-tetrakis(2-pyridyl)pyrazin, bik = 2,2/-bis(1-methylimidazolyl)keton): EPR bez odezvy, intervalenční absorbce (cs)
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| skos:prefLabel
| - Probing Mixed-Valence in a New tppz-Bridged Diruthenium(III,II) Complex {(.mu.-tppz)[Ru(bik)Cl]2}3+ (tppz=2,3,5,6-Tetrakis(2-pyridyl)pyrazine, bik = 2,2/-Bis(1-methylimidazolyl)ketone): EPR Silence, Intervalence Absorption, and .nu.CO Line Broadening
- Probing Mixed-Valence in a New tppz-Bridged Diruthenium(III,II) Complex {(.mu.-tppz)[Ru(bik)Cl]2}3+ (tppz=2,3,5,6-Tetrakis(2-pyridyl)pyrazine, bik = 2,2/-Bis(1-methylimidazolyl)ketone): EPR Silence, Intervalence Absorption, and .nu.CO Line Broadening (en)
- Výzkum smíšené valence v nových, tppz-přemostěných, dirutheniových(III,II ) komplexech {(.mu.-tppz)[Ru(bik)Cl]2}3+ (tppz=2,3,5,6-tetrakis(2-pyridyl)pyrazin, bik = 2,2/-bis(1-methylimidazolyl)keton): EPR bez odezvy, intervalenční absorbce (cs)
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| skos:notation
| - RIV/61388955:_____/07:00084287!RIV08-MSM-61388955
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(OC 139), P(OC 140), Z(AV0Z40400503)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/07:00084287
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Creutz-Taube ion; electron transfer rates; crystal structures (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| |
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Fiedler, Jan
- Kaim, W.
- Lahiri, G. K.
- Sarkar, B.
- Bulak, E.
- Ghumaan, S.
- Koley, M.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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| is http://linked.open...avai/riv/vysledek
of | - Probing Mixed-Valence in a New tppz-Bridged Diruthenium(III,II) Complex {(.mu.-tppz)[Ru(bik)Cl]2}3+ (tppz=2,3,5,6-Tetrakis(2-pyridyl)pyrazine, bik = 2,2/-Bis(1-methylimidazolyl)ketone): EPR Silence, Intervalence Absorption, and .nu.CO Line Broadening
- Probing Mixed-Valence in a New tppz-Bridged Diruthenium(III,II) Complex {(.mu.-tppz)[Ru(bik)Cl]2}3+ (tppz=2,3,5,6-Tetrakis(2-pyridyl)pyrazine, bik = 2,2/-Bis(1-methylimidazolyl)ketone): EPR Silence, Intervalence Absorption, and .nu.CO Line Broadening
- Probing Mixed-Valence in a New tppz-Bridged Diruthenium(III,II) Complex {(.mu.-tppz)[Ru(bik)Cl]2}3+ (tppz=2,3,5,6-Tetrakis(2-pyridyl)pyrazine, bik = 2,2/-Bis(1-methylimidazolyl)ketone): EPR Silence, Intervalence Absorption, and .nu.CO Line Broadening
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