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Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F12%3A00379901%21RIV13-GA0-61388955
rdf:type
n10:Vysledek skos:Concept
dcterms:description
The new tetraruthenium compound {[Ru(NH3)5]4(μ4-TCNQF4)}(PF6)8, TCNQF4 = 2,3,5,6-tetrafluoro-7,7,8,8,-tetracyano-p-benzoquinodimethane, was studied by cyclic voltammetry, IR, UV–Vis–NIR and EPR spectroelectrochemistry. The better π acceptor qualities of TCNQF4 in comparison to TCNQ cause more accessible reduction to produce {[Ru(NH3)5]4(μ4-TCNQF4)}7+ with enhanced metal contribution to the singly occupied MO and low-energy shifted IR vibrational and NIR electronic absorptions. However, the two-electron oxidation to the (10+) ion is also facilitated. The reason is seen in a more metal-centered oxidation for the TCNQF4 complex while the previously studied TCNQ analogue is assumed to undergo a higher degree of oxidation at the bridging ligand. As a result, the title species has a redox potential range of only 0.52 V, indicating a significantly diminished HOMO–LUMO gap. The new tetraruthenium compound {[Ru(NH3)5]4(μ4-TCNQF4)}(PF6)8, TCNQF4 = 2,3,5,6-tetrafluoro-7,7,8,8,-tetracyano-p-benzoquinodimethane, was studied by cyclic voltammetry, IR, UV–Vis–NIR and EPR spectroelectrochemistry. The better π acceptor qualities of TCNQF4 in comparison to TCNQ cause more accessible reduction to produce {[Ru(NH3)5]4(μ4-TCNQF4)}7+ with enhanced metal contribution to the singly occupied MO and low-energy shifted IR vibrational and NIR electronic absorptions. However, the two-electron oxidation to the (10+) ion is also facilitated. The reason is seen in a more metal-centered oxidation for the TCNQF4 complex while the previously studied TCNQ analogue is assumed to undergo a higher degree of oxidation at the bridging ligand. As a result, the title species has a redox potential range of only 0.52 V, indicating a significantly diminished HOMO–LUMO gap.
dcterms:title
Facilitated reduction and oxidation of {[Ru(NH3)5]4(μ4-TCNX)}8+ by changing from TCNX = TCNQ to TCNQF4 Facilitated reduction and oxidation of {[Ru(NH3)5]4(μ4-TCNX)}8+ by changing from TCNX = TCNQ to TCNQF4
skos:prefLabel
Facilitated reduction and oxidation of {[Ru(NH3)5]4(μ4-TCNX)}8+ by changing from TCNX = TCNQ to TCNQF4 Facilitated reduction and oxidation of {[Ru(NH3)5]4(μ4-TCNX)}8+ by changing from TCNX = TCNQ to TCNQF4
skos:notation
RIV/61388955:_____/12:00379901!RIV13-GA0-61388955
n10:predkladatel
n11:ico%3A61388955
n3:aktivita
n18:I n18:P
n3:aktivity
I, P(GA203/09/0705), P(LD11086)
n3:cisloPeriodika
1
n3:dodaniDat
n8:2013
n3:domaciTvurceVysledku
n12:3742121
n3:druhVysledku
n19:J
n3:duvernostUdaju
n7:S
n3:entitaPredkladatele
n6:predkladatel
n3:idSjednocenehoVysledku
136016
n3:idVysledku
RIV/61388955:_____/12:00379901
n3:jazykVysledku
n16:eng
n3:klicovaSlova
EPR; ruthenium; HOMO-LUMO gap
n3:klicoveSlovo
n15:ruthenium n15:EPR n15:HOMO-LUMO%20gap
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[03B235E34752]
n3:nazevZdroje
Polyhedron
n3:obor
n5:CG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:projekt
n17:GA203%2F09%2F0705 n17:LD11086
n3:rokUplatneniVysledku
n8:2012
n3:svazekPeriodika
44
n3:tvurceVysledku
Rajkumar, J. Schwederski, B. Fiedler, Jan Kaim, W.
n3:wos
000308844000022
s:issn
0277-5387
s:numberOfPages
5
n9:doi
10.1016/j.poly.2012.06.066