Pyrrolide-supported lanthanide alkyl complexes. Influence of ligands on molecular structure and catalytic activity toward isoprene polymerization

	Pyrrolide-supported lanthanide alkyl complexes. Influence of ligands on molecular structure and catalytic activity toward isoprene polymerization
	Yang Y ; Liu B ; Lv K ; Gao W ; Cui DM ; Chen XS ; Jing XB
刊名	organometallics
	2007
卷号	26 期号:18 页码:4575-4584
关键词	RARE-EARTH-METALS C5ME5/ER-LIGATED SAMARIUM(II) COMPLEXES TRIAZACYCLONONANE-AMIDE LIGANDS MONOANIONIC ANCILLARY LIGANDS ALPHA-OLEFIN POLYMERIZATION BETA-DIKETIMINATO LIGANDS N-HETEROCYCLIC CARBENES C-H ACTIVATION YTTRIUM COMPLEXES ETHYLENE-POLYMERIZATION
ISSN号	0276-7333
通讯作者	cui dm
中文摘要	the n,n- bidentate ligands 2- {( n- 2,6- r) iminomethyl)} pyrrole ( hl1, r) dimethylphenyl; hl2, r) diisopropylphenyl) have been prepared. hl1 reacted readily with 1 equiv of lanthanide tris( alkyl)s, ln(ch2sime3)(3)(thf)(2), affording lanthanide bis(alkyl) complexes l(1)ln(ch2sime3)(2)(thf)(n) (1a, ln= lu, n = 2; 1b, ln = sc, n = 1) via alkane elimination. reaction of the bulky ligand hl2 with 1 equiv of ln(ch2sime3)(3)( thf)(2) gave the bis(pyrrolylaldiminato) lanthanide mono(alkyl) complexes l(2)(2)ln- (ch2sime3)(thf) (2a, ln) lu; 2b, ln = sc), selectively. the n,n- bidentate ligand hl3, 2- dimethylaminomethylpyrrole, reacted with ln( ch2sime3) 3( thf) 2, generating bimetallic bis( alkyl) complexes of central symmetry ( 3a, ln = y; 3b, ln = lu; 3c, ln = sc). treatment of the n,n,n,n- tetradentate ligand h2l4, 2,2'-bis(2,2-dimethylpropyldiimino) methylpyrrole, with equimolar lu(ch2sime3)(3)(thf)(2) afforded a c-2- symmetric binuclear complex ( 4). complexes 3a, 3b, 3c, and 4 represent rare examples of thf- free binuclear lanthanide bis( alkyl) complexes supported by non- cyclopentadienyl ligands. all complexes have been tested as initiators for the polymerization of isoprene in the presence of alet3 and [ ph3c][b(c6f5)(4)]. complexes 1a, 1b, and 3a show activity, and 1b is the most active initiator, whereas 2a, 2b, 3b, 3c, and 4 are inert.
收录类别	SCI
语种	英语
WOS记录号	WOS:000248865600031
公开日期	2010-07-13
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/14043]
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	Yang Y,Liu B,Lv K,et al. Pyrrolide-supported lanthanide alkyl complexes. Influence of ligands on molecular structure and catalytic activity toward isoprene polymerization[J]. organometallics,2007,26(18):4575-4584.
APA	Yang Y.,Liu B.,Lv K.,Gao W.,Cui DM.,...&Jing XB.(2007).Pyrrolide-supported lanthanide alkyl complexes. Influence of ligands on molecular structure and catalytic activity toward isoprene polymerization.organometallics,26(18),4575-4584.
MLA	Yang Y,et al."Pyrrolide-supported lanthanide alkyl complexes. Influence of ligands on molecular structure and catalytic activity toward isoprene polymerization".organometallics 26.18(2007):4575-4584.