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Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F04%3A00101051%21RIV%2F2005%2FAV0%2FA54005%2FN
rdf:type
n7:Vysledek skos:Concept
dcterms:description
N,N''-Bis(alfa-picolinoyl)hydrazin H2L, potenciálně bis-tridentátní konjugovaný ligand v jeho dvojnásobně deprotonované formě L2-, byl používán k syntéze dirutheniových(II ) komplexů {(mu-L)[Ru(terpy)](2)}(PF6)(2). Jeho elektrochemické a spektroelektrochemické (UV-VIS-NIR, EPR ) studium odhalilo existenci inermediátu se smíšenou valencí ((RuRuII)-Ru-III ) s elektrochemickými a spektroskopickými characteristikami podobnými jako u iontů {(mu-adc-R)[Ru(bpy)(2)](2) }(3+ ) (adc-R2- = bis-bidentate C-substituted diacyl hydrazido(2-) ligands): komproporcionační konstanta K-c = 10(9.0) (CH2CL2), intervalenční pás u 1000 nm (epsilon = 3800 M-1 cm(-1)), EPR signál s g(perpendicular) = 2.14, g(parallel) = 1.953. “Non-innocent” povaha Ln- je odvozena z komparativní analýzy spektroskopických dat. N,N''-Bis(alpha-picolinoyl)hydrazine H2L, a potentially bis-tridentate conjugated ligand in its doubly deprotonated form L2-, has been used to synthesize the diruthenium(II) complex {(mu-L)[Ru(terpy)](2)}(PF6)(2). Its electrochemical and spectroelectrochemical (UV-Vis-NIR, EPR) investigation reveals a mixed-valent ((RuRuII)-Ru-III) intermediate with electrochemical and spectroscopic characteristics related to those of the {(mu-adc-R)[Ru(bpy)(2)](2)}(3+) ions (adc-R2- = bis-bidentate C-substituted diacylhydrazido(2-) ligands): comproportionation constant K-c = 10(9.0) (CH2Cl2), intervalence charge transfer band at 1000 nm (epsilon = 3800 M-1 cm(-1)), EPR signal at g(perpendicular to) = 2.14, g(parallel to) = 1.953. The non-innocent nature of Ln- is inferred from comparative analysis of the spectroscopic data. N,N''-Bis(alpha-picolinoyl)hydrazine H2L, a potentially bis-tridentate conjugated ligand in its doubly deprotonated form L2-, has been used to synthesize the diruthenium(II) complex {(mu-L)[Ru(terpy)](2)}(PF6)(2). Its electrochemical and spectroelectrochemical (UV-Vis-NIR, EPR) investigation reveals a mixed-valent ((RuRuII)-Ru-III) intermediate with electrochemical and spectroscopic characteristics related to those of the {(mu-adc-R)[Ru(bpy)(2)](2)}(3+) ions (adc-R2- = bis-bidentate C-substituted diacylhydrazido(2-) ligands): comproportionation constant K-c = 10(9.0) (CH2Cl2), intervalence charge transfer band at 1000 nm (epsilon = 3800 M-1 cm(-1)), EPR signal at g(perpendicular to) = 2.14, g(parallel to) = 1.953. The non-innocent nature of Ln- is inferred from comparative analysis of the spectroscopic data.
dcterms:title
Characterization of the Mixed-Valent Intermediate (n = 3) of the Complex Series {(.mu., .eta.3:.eta.3-L)[(Ru(terpy)]2}n+ with the Unsaturated Bridging Ligand N,N´-Bis-(.alpha.-picolinoyl)hydrazido(2-) = L2- Characterization of the Mixed-Valent Intermediate (n = 3) of the Complex Series {(.mu., .eta.3:.eta.3-L)[(Ru(terpy)]2}n+ with the Unsaturated Bridging Ligand N,N´-Bis-(.alpha.-picolinoyl)hydrazido(2-) = L2- Charakterizace meziproduktů se smíšenou valencí (n = 3 ) u série komplexů {(.mu.,.eta.3:.eta.3-L)[(Ru(terpy)] 2}n+ s nenasyceným můstkovým ligandem N,N-Bis-(.alfa.-picolinoyl)hydrazido(2-) = L2-
skos:prefLabel
Charakterizace meziproduktů se smíšenou valencí (n = 3 ) u série komplexů {(.mu.,.eta.3:.eta.3-L)[(Ru(terpy)] 2}n+ s nenasyceným můstkovým ligandem N,N-Bis-(.alfa.-picolinoyl)hydrazido(2-) = L2- Characterization of the Mixed-Valent Intermediate (n = 3) of the Complex Series {(.mu., .eta.3:.eta.3-L)[(Ru(terpy)]2}n+ with the Unsaturated Bridging Ligand N,N´-Bis-(.alpha.-picolinoyl)hydrazido(2-) = L2- Characterization of the Mixed-Valent Intermediate (n = 3) of the Complex Series {(.mu., .eta.3:.eta.3-L)[(Ru(terpy)]2}n+ with the Unsaturated Bridging Ligand N,N´-Bis-(.alpha.-picolinoyl)hydrazido(2-) = L2-
skos:notation
RIV/61388955:_____/04:00101051!RIV/2005/AV0/A54005/N
n3:strany
701;707
n3:aktivita
n6:Z n6:P
n3:aktivity
P(GA203/03/0821), P(OC D15.10), Z(AV0Z4040901)
n3:cisloPeriodika
4
n3:dodaniDat
n10:2005
n3:domaciTvurceVysledku
n17:3742121
n3:druhVysledku
n11:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
557427
n3:idVysledku
RIV/61388955:_____/04:00101051
n3:jazykVysledku
n14:eng
n3:klicovaSlova
EPR spectroscopy; hydrazido ligand; spectroelectrochemistry
n3:klicoveSlovo
n12:hydrazido%20ligand n12:EPR%20spectroscopy n12:spectroelectrochemistry
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[5F73D06776EF]
n3:nazevZdroje
Polyhedron
n3:obor
n13:CF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:projekt
n8:GA203%2F03%2F0821 n8:OC%20D15.10
n3:rokUplatneniVysledku
n10:2004
n3:svazekPeriodika
23
n3:tvurceVysledku
Kaim, W. Knödler, A. Fiedler, Jan
n3:zamer
n16:AV0Z4040901
s:issn
0277-5387
s:numberOfPages
7