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Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F11%3A00358453%21RIV12-AV0-61388955
rdf:type
n13:Vysledek skos:Concept
dcterms:description
Complex [Zr{η5-C5Me4(SiMe2H)}2Cl2] (1) was prepared by the reaction of lithium salt of 2,3,4,5-tetramethyl-1-(dimethylsilyl)cyclopenta-2,4-diene with [ZrCl4] in boiling THF. The reduction of 1 with excess magnesium in THF in the presence of excess bis(trimethylsilyl)acetylene (btmsa) afforded the bivalent metal ansa-disilylene complex with π-coordinated btmsa [Zr(η2-btmsa){η5-C5Me4(SiMe2)}2] (2). The dehydrocoupling of SiMe2H groups was accompanied by a hydrogen transfer to releasing btmsa to give a mixture of cis- and trans-1,2-bis(trimethylsilyl)ethene. Chlorination of 2 with PbCl2 afforded ansa-[Zr{η5-C5Me4(SiMe2)}2Cl2] (3) and liberated btmsa. The crystal structures of complexes, 1, 2 and 3 have been determined by X-ray crystallography. Complex [Zr{η5-C5Me4(SiMe2H)}2Cl2] (1) was prepared by the reaction of lithium salt of 2,3,4,5-tetramethyl-1-(dimethylsilyl)cyclopenta-2,4-diene with [ZrCl4] in boiling THF. The reduction of 1 with excess magnesium in THF in the presence of excess bis(trimethylsilyl)acetylene (btmsa) afforded the bivalent metal ansa-disilylene complex with π-coordinated btmsa [Zr(η2-btmsa){η5-C5Me4(SiMe2)}2] (2). The dehydrocoupling of SiMe2H groups was accompanied by a hydrogen transfer to releasing btmsa to give a mixture of cis- and trans-1,2-bis(trimethylsilyl)ethene. Chlorination of 2 with PbCl2 afforded ansa-[Zr{η5-C5Me4(SiMe2)}2Cl2] (3) and liberated btmsa. The crystal structures of complexes, 1, 2 and 3 have been determined by X-ray crystallography.
dcterms:title
Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes
skos:prefLabel
Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes
skos:notation
RIV/61388955:_____/11:00358453!RIV12-AV0-61388955
n13:predkladatel
n14:ico%3A61388955
n3:aktivita
n7:Z n7:P
n3:aktivity
P(IAA400400708), P(LC06070), Z(AV0Z40400503), Z(MSM0021620857)
n3:cisloPeriodika
3
n3:dodaniDat
n6:2012
n3:domaciTvurceVysledku
n9:7277962 n9:9689907 n9:6327230 n9:7763743
n3:druhVysledku
n15:J
n3:duvernostUdaju
n5:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
193170
n3:idVysledku
RIV/61388955:_____/11:00358453
n3:jazykVysledku
n19:eng
n3:klicovaSlova
metallocenes; zirconium; bridging ligands
n3:klicoveSlovo
n11:bridging%20ligands n11:zirconium n11:metallocenes
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[A5362D3E154E]
n3:nazevZdroje
Collection of Czechoslovak Chemical Communications
n3:obor
n18:CF
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
6
n3:projekt
n4:LC06070 n4:IAA400400708
n3:rokUplatneniVysledku
n6:2011
n3:svazekPeriodika
76
n3:tvurceVysledku
Císařová, I. Mach, Karel Pinkas, Jiří Gyepes, R. Kubišta, Jiří Horáček, Michal
n3:wos
000288340200003
n3:zamer
n10:AV0Z40400503 n10:MSM0021620857
s:issn
0010-0765
s:numberOfPages
15
n17:doi
10.1135/cccc2010155