About: Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes

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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. (en)
Title	Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes (en)
skos:prefLabel	Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes (en)
skos:notation	RIV/61388955:_____/11:00358453!RIV12-AV0-61388955
http://linked.open...avai/predkladatel	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA400400708), P(LC06070), Z(AV0Z40400503), Z(MSM0021620857)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Horáček, Michal Mach, Karel Kubišta, Jiří Pinkas, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	193170
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/11:00358453
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	metallocenes; zirconium; bridging ligands (en)
http://linked.open.../riv/klicoveSlovo	bridging ligands metallocenes zirconium
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[A5362D3E154E]
http://linked.open...i/riv/nazevZdroje	Collection of Czechoslovak Chemical Communications
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Activation of small molecules by titanocene(II) and zirconocene(II) complexes. The structure and synthetic applications of transition metal complexes
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	76
http://linked.open...iv/tvurceVysledku	Císařová, I. Mach, Karel Pinkas, Jiří Gyepes, R. Horáček, Michal Kubišta, Jiří
http://linked.open...ain/vavai/riv/wos	000288340200003
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace Nové molekulární systémy pro pokročilé aplikace prospěšné pro zdraví a šetrné k životnímu prostředí
issn	0010-0765
number of pages	15 (xsd:int)
http://bibframe.org/vocab/doi	10.1135/cccc2010155
is http://linked.open...avai/riv/vysledek of	Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes

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