Titanium Complexes Incorporating 1,1-Bis(<i>tert</i>-butylamido)-1-silacycloalkane Ligands: Generation of Alkyl Derivatives and Reactivity toward Molecular Oxygen
作者:Sung-Joon Kim、Dong-Woong Choi、Young-Joo Lee、Byung-Hoon Chae、Jaejung Ko、Sang Ook Kang
DOI:10.1021/om034174b
日期:2004.2.1
methoxy-bridged diamidotitanium(IV) dimers. Reaction of 2 with 2 equiv of PhCH2MgBr yielded the corresponding dibenzyl (Bn2) derivatives of titanium (cycl)Si(NBut)2TiBn2 (9). When these dibenzyl complexes were used as precursors for the conversion of monomeric to dimeric alkoxy-bridged species, oxo insertion did not occur, presumably because formation of the alkoxy-bridged dimer was hampered by the presence
已经合成并充分表征了一系列甲氧基桥接的二氨基钛二聚物。用(化学式)2:1或1:1的(cycl)Si(NBu t)2 TiCl 2(2 ;循环= C n H 2 n,n = 3-5)处理格氏试剂MeMgBr得到四配位的二甲基钛(环)Si(NBu t)2 TiMe 2(3)和一甲基钛(CH 2)3 Si(NBu t)2 TiMeCl(5)分别。这些配合物与双氧的后续反应是通过将一个氧分子插入3和5的Ti-C键中而进行的,从而生成各自的甲氧基桥连的钛二聚体[(cycl)Si(NBu t)2 Ti(μ-OMe)Me ] 2(4)和[(环)Si(NBu t)2 Ti(μ-OMe)Cl] 2(6)。相反,二氯化钛(IV)络合物(CH 2)3 Si(NBu t)2 TiCl 2(2a)与O 2的反应由于自氧化作用形成了容易形成的Si-O-Ti键,因此得到了肼基物种[(NBu t NBu t)(CH 2)3
Sterically Controlled Silacycloalkyl Diamide Complexes of Titanium(IV): Synthesis, Structure, and Catalytic Behavior of (cycl)Si(NBu<i><sup>t</sup></i>)<sub>2</sub>TiCl<sub>2</sub> [(cycl)Si = Silacyclobutane, Silacyclopentane, Silacyclopentene, and Silacyclohexane]
作者:Sung-Joon Kim、Il Nam Jung、Bok Ryul Yoo、Sang Hern Kim、Jaejung Ko、Dongjin Byun、Sang Ook Kang
DOI:10.1021/om000740g
日期:2001.5.1
potential catalysts for the polymerization of ethylene. While sterically less demanding silacyclobutyl and -pentyl diamide complexes (3a and 3b) exhibit low ethylenepolymerization activity (4.0−5.8 kg PE molcat-1 h-1) in the presence of methylalumoxane, the highly puckered silacyclohexyl diamide complex 3c shows better activity (14 kg PE molcat-1 h-1) for ethylenepolymerization when it is activated with
A method of producing silicon containing thin films by the thermal polymerization of a reactive gas mixture bisaminosilacyclobutane and source gas selected from a nitrogen providing gas, an oxygen providing gas and mixtures thereof. The films deposited may be silicon nitride, silicon carbonitride, silicon dioxide or carbon doped silicon dioxide. These films are useful as dielectrics, passivation coatings, barrier coatings, spacers, liners and/or stressors in semiconductor devices.
A method of producing silicon containing thin films by the thermal polymerization of a reactive gas mixture bisaminosilacyclobutane and source gas selected from a nitrogen providing gas, an oxygen providing gas and mixtures thereof. The films deposited may be silicon nitride, silicon carbonitride, silicon dioxide or carbon doped silicon dioxide. These films are useful as dielectrics, passivation coatings, barrier coatings, spacers, liners and/or stressors in semiconductor devices.