. . "76" . . "CZ - \u010Cesk\u00E1 republika" . "metallocenes; zirconium; bridging ligands"@en . . "Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes" . "RIV/61388955:_____/11:00358453" . . . "6"^^ . . "C\u00EDsa\u0159ov\u00E1, I." . . "Mach, Karel" . . . "Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes"@en . . . . "Pinkas, Ji\u0159\u00ED" . . . . "3" . "0010-0765" . "10.1135/cccc2010155" . "P(IAA400400708), P(LC06070), Z(AV0Z40400503), Z(MSM0021620857)" . "Collection of Czechoslovak Chemical Communications" . "193170" . . "Gyepes, R." . . . "Kubi\u0161ta, Ji\u0159\u00ED" . . "Complex [Zr{\u03B75-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 \u03C0-coordinated btmsa [Zr(\u03B72-btmsa){\u03B75-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{\u03B75-C5Me4(SiMe2)}2Cl2] (3) and liberated btmsa. The crystal structures of complexes, 1, 2 and 3 have been determined by X-ray crystallography." . "Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes" . "Hor\u00E1\u010Dek, Michal" . . "[A5362D3E154E]" . "Complex [Zr{\u03B75-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 \u03C0-coordinated btmsa [Zr(\u03B72-btmsa){\u03B75-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{\u03B75-C5Me4(SiMe2)}2Cl2] (3) and liberated btmsa. The crystal structures of complexes, 1, 2 and 3 have been determined by X-ray crystallography."@en . . "Dehydrocoupling of SiMe2H substituents in permethylated zirconocene complexes"@en . . "4"^^ . "000288340200003" . "15"^^ . "RIV/61388955:_____/11:00358453!RIV12-AV0-61388955" .