Synthesis of Homo- and Heteronuclear Rare-Earth Metal Complexes Stabilized by Ethanolamine-Bridged Bis(phenolato) Ligands and Their Application in Catalyzing Reactions of CO2 and Epoxides

被引：48

作者：

Hua, Linyan ^{[1
]}

Li, Baoxia ^{[1
]}

Han, Cuiting ^{[1
]}

Gao, Pengfei ^{[1
]}

Wang, Yaorong ^{[1
]}

Yuan, Dan ^{[1
]}

Yao, Yingming ^{[1
,2
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Key Lab Organ Synth Jiangsu Prov, Dushu Lake Campus, Suzhou 215123, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China

来源：

INORGANIC CHEMISTRY | 2019年 / 58卷 / 13期

基金：

中国国家自然科学基金;

关键词：

RING-OPENING POLYMERIZATION; CARBON-DIOXIDE; CYCLOHEXENE OXIDE; CYCLIC CARBONATES; ALTERNATING COPOLYMERIZATION; PROPYLENE-OXIDE; CHEMICAL FIXATION; STRUCTURAL-CHARACTERIZATION; EFFICIENT CATALYSTS; BETA-BUTYROLACTONE;

D O I：

10.1021/acs.inorgchem.9b01169

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of homonuclear rare-earth (RE) metal complexes (1(Y), 2(Yb), 3(Nd), and 4(La)) and heteronuclear RE-Zn (1(Y-Zn), 3(Nd-Zn)) complexes and 5(Sm-Zn)) stabilized by ethanolamine-bridged bis(phenolato) ligands was prepared and structurally characterized. Heteronuclear complexes are assembled through bridging acetate ligands, and their formation and characterization add to the diversity of 3d-4f complexes. Their activities in mediating reactions of CO2 and epoxides were evaluated and compared. Heteronuclear RE-Zn complexes found application in the copolymerization of cyclohexene oxide and CO2, giving rise to acetate-group-capped copolymers. Homonuclear complexes showed good activity in catalyzing the cycloaddition of variously monosubstituted epoxides and CO2 (1 bar), generating cyclic carbonates in 65-96% yield. For sterically hindered disubstituted epoxides, good yields of 60-91% were achieved in the presence of 10 bar CO2.

引用

页码：8775 / 8786

页数：12

共 122 条

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