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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F14%3A33152657%21RIV15-MSM-15310___
rdf:type
n9:Vysledek skos:Concept
rdfs:seeAlso
http://pubs.rsc.org/en/content/articlepdf/2014/dt/c3dt52638k
dcterms:description
Reaction of dimesityliron(II) (Fe-2(mes)(4)) with the N-heterocyclic carbenes 1,3-bis(2,6-diisopropylphenyl)-imidazol-2-ylidene (IPr) and 1,3-bis(2,6-dimethylphenyl)hexahydropyrimidin-2-ylidene (6-Xyl) afforded the novel trigonal planar complexes [Fe(IPr)(mes)(2)] (1) and [Fe(6-Xyl)(mes)(2)] (2), respectively. Both species were structurally characterized by single crystal X-ray diffraction and display structures and magnetic responses consistent with a quintet ground state (S = 2). Reaction of 1 with KC8 in THF afforded K+ salts of the anionic complex [{:C[N(2,6-(Pr2C6H3)-Pr-i)](2)(CH)C}(2)Fe(mes)](-) (3) and the homoleptic organometallic anion [Fe(mes)(3)](-) (4). By contrast, reduction of 2 resulted in extensive decomposition and intractable product mixtures. Complex 3 is coordinated by two ditopic carbanionic carbenes via the C4/C5 position while the C2 position retains unquenched carbenic character and remains vacant for further coordination. This was corroborated by reacting solutions of 3 with one and two equivalents of triethylaluminium (AlEt3) which resulted in the formation of [{Et3Al:C[N(2,6-(Pr2C6H3)-Pr-i)](2)(CH)C}{:C[N(2,6-(Pr2C6H3)-Pr-i)](2)-(CH)C}Fe(mes)](-) (5) and [{Et3Al:C[N(2,6-(Pr2C6H3)-Pr-i)](2)(CH)C}(2)Fe(mes)](-) (6), respectively. Both of these species were structurally characterized as [K(2,2,2-crypt)](+) salts. Reaction of dimesityliron(II) (Fe-2(mes)(4)) with the N-heterocyclic carbenes 1,3-bis(2,6-diisopropylphenyl)-imidazol-2-ylidene (IPr) and 1,3-bis(2,6-dimethylphenyl)hexahydropyrimidin-2-ylidene (6-Xyl) afforded the novel trigonal planar complexes [Fe(IPr)(mes)(2)] (1) and [Fe(6-Xyl)(mes)(2)] (2), respectively. Both species were structurally characterized by single crystal X-ray diffraction and display structures and magnetic responses consistent with a quintet ground state (S = 2). Reaction of 1 with KC8 in THF afforded K+ salts of the anionic complex [{:C[N(2,6-(Pr2C6H3)-Pr-i)](2)(CH)C}(2)Fe(mes)](-) (3) and the homoleptic organometallic anion [Fe(mes)(3)](-) (4). By contrast, reduction of 2 resulted in extensive decomposition and intractable product mixtures. Complex 3 is coordinated by two ditopic carbanionic carbenes via the C4/C5 position while the C2 position retains unquenched carbenic character and remains vacant for further coordination. This was corroborated by reacting solutions of 3 with one and two equivalents of triethylaluminium (AlEt3) which resulted in the formation of [{Et3Al:C[N(2,6-(Pr2C6H3)-Pr-i)](2)(CH)C}{:C[N(2,6-(Pr2C6H3)-Pr-i)](2)-(CH)C}Fe(mes)](-) (5) and [{Et3Al:C[N(2,6-(Pr2C6H3)-Pr-i)](2)(CH)C}(2)Fe(mes)](-) (6), respectively. Both of these species were structurally characterized as [K(2,2,2-crypt)](+) salts.
dcterms:title
Iron(II) complexes of ditopic carbanionic carbenes Iron(II) complexes of ditopic carbanionic carbenes
skos:prefLabel
Iron(II) complexes of ditopic carbanionic carbenes Iron(II) complexes of ditopic carbanionic carbenes
skos:notation
RIV/61989592:15310/14:33152657!RIV15-MSM-15310___
n3:aktivita
n7:P
n3:aktivity
P(ED2.1.00/03.0058)
n3:cisloPeriodika
11
n3:dodaniDat
n10:2015
n3:domaciTvurceVysledku
n20:6407226
n3:druhVysledku
n4:J
n3:duvernostUdaju
n13:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
22863
n3:idVysledku
RIV/61989592:15310/14:33152657
n3:jazykVysledku
n18:eng
n3:klicovaSlova
coordination; ruthenium; nhc ligands; imidazolium salts; iridium complexes; metal-complexes; bond activation; olefin metathesis catalysts; c-h activation; n-heterocyclic-carbene
n3:klicoveSlovo
n5:ruthenium n5:olefin%20metathesis%20catalysts n5:n-heterocyclic-carbene n5:c-h%20activation n5:metal-complexes n5:imidazolium%20salts n5:bond%20activation n5:iridium%20complexes n5:coordination n5:nhc%20ligands
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[F3AB2D7AD2AD]
n3:nazevZdroje
Dalton Transactions (print)
n3:obor
n12:CA
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
5
n3:projekt
n14:ED2.1.00%2F03.0058
n3:rokUplatneniVysledku
n10:2014
n3:svazekPeriodika
43
n3:tvurceVysledku
Goicoechea, Jose M Musgrave, Rebecca A Herchel, Radovan Irwin, Mark Turbervill, Robert S P
n3:wos
000332389700020
s:issn
1477-9226
s:numberOfPages
10
n17:doi
10.1039/c3dt52638k
n16:organizacniJednotka
15310