The behavior of pyrrolyl ligands within the rare-earth metal alkyl complexes. Insertion of C=N and C=O double bonds into Ln-sigma-C bonds

	The behavior of pyrrolyl ligands within the rare-earth metal alkyl complexes. Insertion of C=N and C=O double bonds into Ln-sigma-C bonds
	Yang Y ; Cui DM ; Chen XS
刊名	dalton transactions
	2010
卷号	39 期号:16 页码:3959-3967
关键词	BETA-DIKETIMINATO LIGANDS LACTIDE POLYMERIZATION ETHYLENE POLYMERIZATION STRUCTURAL-CHARACTERIZATION YTTRIUM COMPLEXES ENANTIOSELECTIVE HYDROAMINATION/CYCLIZATION ISOSPECIFIC POLYMERIZATION DIALKYLSCANDIUM COMPLEXES ORGANOYTTRIUM CHEMISTRY CYCLOPENTADIENYL LIGAND
ISSN号	1477-9226
通讯作者	cui dm
中文摘要	this paper presents some unusual reactions of lanthanide tris(alkyl)s or lanthanide mono-cp' (cp' = (c5me4)sime3)bis(alkyl)s with pyrrolyl ligands, and the eta(5)- or eta(1)-coordination mode of the pyrrolyl ring, as well as c=n and c=o double bonds insertion into ln-sigma-c moities. n, n, o-tridentate ligand hl1, 2-(2-ch3oc6h3n=ch)-c4h3nh, was prepared. treatment of hl1 with rare-earth metal tris(alkyl)s, ln(ch2sime3)(3)(thf)(2), generated centrosymmetric bimetallic (pyrrolylaldiminato)lanthanide mono(alkyl) complexes [{2-(2-ch3oc6h3nc(h)r)-c4h3n}lnr](2) (1a: ln = y; 1b: ln = lu) (r = ch2sime3). in this process, hl1 was deprotonated by the metal alkyl and its imino c=n group was deactivated by the intramolecular alkylation, generating dianionic species that bridged the two metal alkyl units in eta(5)/eta(1):kappa(1) modes. when the reaction was carried out in dimethoxyethane (dme), asymmetric complex [2-(2-ch3oc6h3nc(h)r)-c4h3n](2)y2r2(dme) (2) was given. furthermore, the reaction of alkyl complex 1b and benzophenone (ph2c=o) afforded alkyl-insertion product [{2-(2-ch3oc6h3nc(h)r)-c4h3n}luoc(r)ph-2](2) (3). both the intermolecular alkylation and the pyrrole's behavior as the hetero-cyclopentadienyl ligand were also observed in complexes 2 and 3. hl1 reacted with (eta(5)-cp')y(ch2sime3)(2)(thf) (e) to form a mixed ligands supported alkyl complex [(eta(5)-cp')(l-1)]y(ch2sime3)(thf) (4), whilst complex e was treated with 2-(2,6-ipr(2)c(6)h(3)n=ch)-c4h3nh (hl2) to yield [(eta(5)-cp')(l-2)]y(ch2sime3)(thf) (5). however, reaction of e and 2-(me2nch2)-c4h3nh (hl3) afforded y[(eta(5)-cp')(l-3)(2)] (6), and ligand redistribution was found in this process. the molecular structures of complexes 5 and 6 were confirmed by x-ray diffraction, which indicated that the c=n double bond survived and the pyrrolyl ring coordinated to the metal center in eta(1)-mode.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000276377100022
公开日期	2012-06-06
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/43805]
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,Cui DM,Chen XS. The behavior of pyrrolyl ligands within the rare-earth metal alkyl complexes. Insertion of C=N and C=O double bonds into Ln-sigma-C bonds[J]. dalton transactions,2010,39(16):3959-3967.
APA	Yang Y,Cui DM,&Chen XS.(2010).The behavior of pyrrolyl ligands within the rare-earth metal alkyl complexes. Insertion of C=N and C=O double bonds into Ln-sigma-C bonds.dalton transactions,39(16),3959-3967.
MLA	Yang Y,et al."The behavior of pyrrolyl ligands within the rare-earth metal alkyl complexes. Insertion of C=N and C=O double bonds into Ln-sigma-C bonds".dalton transactions 39.16(2010):3959-3967.