Synthesis, characterization, and catalytic activities of rare-earth metal complexes with iminopyrrolyl ligands

被引：25

作者：

Zhou, Shuangliu ^{[1
]}

Yin, Chengwei ^{[1
]}

Wang, Hui ^{[1
]}

Zhu, Xiancui ^{[1
]}

Yang, Gaosheng ^{[1
]}

Wang, Shaowu ^{[1
,2
]}

机构：

[1] Anhui Normal Univ, Sch Chem & Mat Sci, Inst Organ Chem,Minist Educ, Lab Functionalized Mol Solids,Anhui Lab Mol Based, Wuhu 241000, Anhui, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2011年 / 14卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Rare-earths; Catalyst; Iminopyrrolyl; Ring-opening polymerization; epsilon-Caprolactone; RING-OPENING POLYMERIZATION; EPSILON-CAPROLACTONE POLYMERIZATION; LANTHANIDE COMPLEXES; ORGANOLANTHANIDE COMPLEXES; LIVING POLYMERIZATION; EFFICIENT CATALYSTS; METHYL-METHACRYLATE; L-LACTIDE; COPOLYMERIZATION; INITIATORS;

D O I：

10.1016/j.inoche.2011.04.015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of rare-earth metal complexes with substituted iminopyrrolyl ligands were prepared and characterized. Reactions of [(Me3Si)(2)N](3)Ln(mu-Cl)Li(THF)(3) with 3 equiv. of 2-(2.6-Et2C6H3N CH)C4H3NH (la) in toluene generated tris-iminopyrrolyl rare-earth metal complexes with formula [2-(2,6-Et2C6H3N CH)C4H3N](3)Ln(THF)(n) [n = 0, Ln = Y (2a), Eu (2b); n =1,Ln= Nd (2c), Sm (2d)] in moderate yields. Treatments of [(Me3Si)(2)N](3)Ln(mu Cl) Li(THF)(3) with 3 equiv. of 2-(2,4.6-Me3C6H2N CH)C4H3NH (1b) in toluene afforded tris-iminopyrrolyl rare-earth metal complexes with formula 12-(2,4,6-Me3C6H2N CH)C(4)H(3)NI(3)Ln(THF) [Ln = Y (3a), Sm (3b), Eu (3c)]. The catalytic properties of all rare-earth metal complexes on the ring-opening polymerization of E-caprolactone have been studied. The results represent rare example of the pyrrolyl ligands as initiators for E-caprolactone polymerization. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1196 / 1200

页数：5

共 65 条

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