Synthesis and Crystal Structures of .mu.-1,3-bis(.eta.5-tetramethylcyclopentadienyl)-1,1,3,3-tetramethyldisiloxane)[.eta.2-bis(trimethylsilyl)ethyne]titanium(II) and a Doubly Tucked-in Product of its Thermolysis

0181546 - UFCH-W 20020178 RIV CH eng J - Článek v odborném periodiku
Horáček, Michal - Štěpnička, P. - Kubišta, Jiří - Gyepes, R. - Císařová, I. - Petrusová, Lidmila - Mach, Karel
Synthesis and Crystal Structures of .mu.-1,3-bis(.eta.5-tetramethylcyclopentadienyl)-1,1,3,3-tetramethyldisiloxane)[.eta.2-bis(trimethylsilyl)ethyne]titanium(II) and a Doubly Tucked-in Product of its Thermolysis.
Journal of Organometallic Chemistry. Roč. 658, - (2002), s. 235-241. ISSN 0022-328X. E-ISSN 1872-8561
Grant CEP: GA ČR GA203/02/0774; GA ČR GA203/02/0436
Výzkumný záměr: CEZ:AV0Z4040901
Klíčová slova: titanium * ansa-titanocene complexes * siloxane bridge
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 1.901, rok: 2002

Reduction of dichloro-{1,3-bis(eta(5)-tetramethylcyclopentadienyl)-1,1,3,3-tetramethyldisiloxane} titanium(IV), [T1Cl2{eta(5):eta(5)- (C5Me4SiMe2)(2)O}] (1), with magnesium in the presence of bis(trimethylsilyl)ethyne affords the ansa-[T-1{eta(5):eta(5)- (C5Me4SiMe2)(2)O}(eta(2)-Me3SiC equivalent to CSiMe3)] (2) complex in high yield. Compound 2 is thermally robust, decomposing at 170 degreesC in high vacuum with liberation of 1,2-bis(trimethylsilyl)ethene to give predominantly an asymmetric, allydiene complex ansa-[Ti{(eta(5)-C5Me4)SiMe2OSiMe2{eta(3):eta(4)-C5Me2(CH2)(2)}] (3) as a result of twofold C-H bond activation. Crystal structures of 2 and 3 were determined by X-ray diffraction.
Trvalý link: http://hdl.handle.net/11104/0078100