Rare-earth dichloro and bis(alkyl) complexes supported by bulky amido-imino ligand. Synthesis, structure, reactivity and catalytic activity in isoprene polymerization

	Rare-earth dichloro and bis(alkyl) complexes supported by bulky amido-imino ligand. Synthesis, structure, reactivity and catalytic activity in isoprene polymerization
	Kissel AA ; Lyubov DM ; Mahrova TV ; Fukin GK ; Cherkasov AV ; Glukhova TA ; Cui DM ; Trifonov AA
刊名	dalton transactions
	2013
卷号	42 期号:25 页码:9211-9225
关键词	RING-OPENING POLYMERIZATION BETA-DIKETIMINATO LIGANDS ALPHA-DIIMINE LIGANDS H BOND ACTIVATION YTTRIUM COMPLEXES ALKYL COMPLEXES ORGANOMETALLIC COMPOUNDS LACTIDE POLYMERIZATION LANTHANIDE CHEMISTRY GUANIDINATE LIGANDS
ISSN号	1477-9226
通讯作者	trifonov aa
中文摘要	a monoanionic amido-imino ligand system [(2,6-ipr(2)c(6)h(3))n=c(me)c(vch(2))n(c6h3-2,6-ipr(2))](-) was successfully employed for the synthesis of monomeric dichloro [(2,6-ipr(2)c(6)h(3))n=c(me)c(vch(2))n(c6h3-2,6-ipr(2))] lncl(2)(thf)(2) (ln = y, 2y; lu, 2lu) and bis(alkyl) [(2,6-ipr(2)c(6)h(3))n=c(me)c(vch(2))n(c6h3-2,6-ipr(2))]ln-(ch2sime3)(2)(thf) (ln = y, 4y; lu, 4lu) species of yttrium and lutetium. dichloro complexes 2y and 2lu turned out to be unstable in aromatic solvents. the ligand symmetrization reaction in the case of 2y affords the yttrium complex coordinated by dianionic [(2,6-ipr(2)c(6)h(3))n=c(me)c(vch(2))n(c6h3-2,6-ipr(2))]2ligand, (2,6-ipr(2)c(6)h(3))n=c(me)c(vch(2))n(c6h3-2,6-ipr(2)) and ycl3. on the contrary, bis(alkyl) species 4y and 4lu are rather stable and do not undergo such a transformation or thermal decomposition. the treatment of complex 4y with dme resulted in c-o bond cleavage and the formation of a dimeric methoxy-alkyl species {[(2,6-ipr(2)c(6)h(3))n=c(me)c(vch(2))n(c6h3-2,6-ipr(2))]y(ch2sime3)(mu-ome)}(2) (5). the ternary systems 4ln/alibu(3)/borate (borate = [hnme2ph][b(c6f5)(4)] and [cph3][b(c6f5)(4)]; molar ratio 1 : 10 : 1) performed high catalytic activity in isoprene polymerization and ability to convert into polymer 1000-5000 equivalents of isoprene in 20-120 min with quantitative conversion. the obtained polyisoprenes possessed high molecular weights (2.9 x 10(4)-4.1 x 10(4)) and moderate polydispersities (2.14-3.52). predominant 3,4-regioselectivity (up to 78%) was observed.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000319875600027
公开日期	2014-04-18
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/50263]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Kissel AA,Lyubov DM,Mahrova TV,et al. Rare-earth dichloro and bis(alkyl) complexes supported by bulky amido-imino ligand. Synthesis, structure, reactivity and catalytic activity in isoprene polymerization[J]. dalton transactions,2013,42(25):9211-9225.
APA	Kissel AA.,Lyubov DM.,Mahrova TV.,Fukin GK.,Cherkasov AV.,...&Trifonov AA.(2013).Rare-earth dichloro and bis(alkyl) complexes supported by bulky amido-imino ligand. Synthesis, structure, reactivity and catalytic activity in isoprene polymerization.dalton transactions,42(25),9211-9225.
MLA	Kissel AA,et al."Rare-earth dichloro and bis(alkyl) complexes supported by bulky amido-imino ligand. Synthesis, structure, reactivity and catalytic activity in isoprene polymerization".dalton transactions 42.25(2013):9211-9225.