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Statements

Subject Item
n2:RIV%2F60461373%3A22310%2F07%3A00018279%21RIV08-GA0-22310___
rdf:type
skos:Concept n18:Vysledek
dcterms:description
A set of about 30 Fischer-type aminocarbene complexes of Cr, W and Fe was synthesized, of general formulae [(CO)nM = C(NMe2)(Ph-p-R)], n = 5 for M = Cr or W , n = 4 for M = Fe; [(CO)nM=C(NMe2)(R')]; [(CO)n-1M =C{N(CH2CH=CH2)(CH2CH =CH2)} (Ph-p-R)] , and [(CO)5Cr=C(NMe2)(Ph-o-Me-p-R)]. Values of oxidation potential Eox, reduction potential Ered and their difference ΔE = Eox - Ered were correlated with 1) nature of the central metal, 2) carbene carbon substitution (using the Linear Free Energy Relationship (LFER) approach), 3) coordination sphere geometry 4) bonding abilities of ligands. It was found that the reduction takes place on the carbene carbon atom and Ered depends strongly on the ligand substitution, being influenced by both sterical and inductive effects of the substituents. On the other hand, oxidation is practically independent on the ligand substitution; it is determined mainly by nature of the central metal atom and number of carbonyl groups. The experimental results are com Korelace mezi redoxním chováním Fischerových karbenů a jejich strukturou a reaktivitou A set of about 30 Fischer-type aminocarbene complexes of Cr, W and Fe was synthesized, of general formulae [(CO)nM = C(NMe2)(Ph-p-R)], n = 5 for M = Cr or W , n = 4 for M = Fe; [(CO)nM=C(NMe2)(R')]; [(CO)n-1M =C{N(CH2CH=CH2)(CH2CH =CH2)} (Ph-p-R)] , and [(CO)5Cr=C(NMe2)(Ph-o-Me-p-R)]. Values of oxidation potential Eox, reduction potential Ered and their difference ΔE = Eox - Ered were correlated with 1) nature of the central metal, 2) carbene carbon substitution (using the Linear Free Energy Relationship (LFER) approach), 3) coordination sphere geometry 4) bonding abilities of ligands. It was found that the reduction takes place on the carbene carbon atom and Ered depends strongly on the ligand substitution, being influenced by both sterical and inductive effects of the substituents. On the other hand, oxidation is practically independent on the ligand substitution; it is determined mainly by nature of the central metal atom and number of carbonyl groups. The experimental results are com
dcterms:title
Korelace mezi redoxním chováním Fischerových karbenů a jejich strukturou a reaktivitou A Correlation between Redox Behaviour of Fischer-type Carbene Complexes and their Structure and Reactivity A Correlation between Redox Behaviour of Fischer-type Carbene Complexes and their Structure and Reactivity
skos:prefLabel
Korelace mezi redoxním chováním Fischerových karbenů a jejich strukturou a reaktivitou A Correlation between Redox Behaviour of Fischer-type Carbene Complexes and their Structure and Reactivity A Correlation between Redox Behaviour of Fischer-type Carbene Complexes and their Structure and Reactivity
skos:notation
RIV/60461373:22310/07:00018279!RIV08-GA0-22310___
n3:strany
45-60
n3:aktivita
n13:P
n3:aktivity
P(GA203/04/0487)
n3:cisloPeriodika
21
n3:dodaniDat
n4:2008
n3:domaciTvurceVysledku
n11:3694291 n11:5078008
n3:druhVysledku
n15:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
407860
n3:idVysledku
RIV/60461373:22310/07:00018279
n3:jazykVysledku
n9:eng
n3:klicovaSlova
Fischer-type aminocarbene complexes; electrochemistry; Fe; Cr; W; substituent effect
n3:klicoveSlovo
n10:Fischer-type%20aminocarbene%20complexes n10:Fe n10:electrochemistry n10:W n10:Cr n10:substituent%20effect
n3:kodStatuVydavatele
SK - Slovenská republika
n3:kontrolniKodProRIV
[D87801E65F88]
n3:nazevZdroje
Achievements in Coordination, Bioinorganic and Applied Inorganic Chemistry
n3:obor
n5:CA
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:projekt
n6:GA203%2F04%2F0487
n3:rokUplatneniVysledku
n4:2007
n3:tvurceVysledku
Záliš, S. Hoskovcová, Irena Ludvík, J. Dvořák, Dalimil
s:issn
1335-308X
s:numberOfPages
15
n8:organizacniJednotka
22310