Synthesis of Heterometallic Rare Earth(Ⅲ)-Cobalt(Ⅱ)Complexes and Their Application in Alternating Copolymerization of Cyclohexene Oxide and Carbon Dioxide
作者机构：Key Laboratory of Organic Synthesis of Jiangsu ProvinceState and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsCollege of ChemistryChemical Engineering&Materials ScienceDushu Lake CampusSoochow UniversitySuzhouJiangsu215123 China Suzhou Key Laboratory of Macromolecular Design and Precision SynthesisSuzhouJiangsu215123 China Suzhou Industrial Park Institute of Services and OutsourcingSuzhouJiangsu215123 China School of Chemistry and Life ScienceSuzhou University of Science and TechnologySuzhouJiangsu215009 China
出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)
年 卷 期：2023年第41卷第7期
页 面：805-813页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学]
基 金：financial support from the National Natural Science Foundation of China(21871198) the Major Research Project of the Natural Science of the Jiangsu Higher Education Institutions(19KJA360005 and 19KJA320007),and PAPD
主 题：Carbon dioxide Rare earth metal Heterometallic complexes Poly(cyclohexene carbonate) Crystal structure
摘 要：Comprehensive Summary Four heterometallic rare earth(Ⅲ)-cobalt(Ⅱ)complexes(rare earth=Y(1),Sm(2),Nd(3),La(4))stabilized by an o-phenylenediamine-bridged tris(phenolato)ligand(L)have been synthesized and *** these tetranuclear complexes,one polydentate L coordinates to one rare earth(Ⅲ)ion,and one cobalt(Ⅱ)ion,respectively,while two rare earth ions are bridged by four acetate *** complexes were applied in the copolymerization of cyclohexene oxide and CO_(2),which showed good activity(TON up to 440)and high poly(cyclohexene carbonate)selectivity(99%).Kinetic studies determined the equation as rate=k[CHO]1[CO_(2)]0[initiator]1,which proves a first-order dependence on initiator concentrations and implies a synergistic mechanism with rare earth and cobalt ions cooperating in epoxide ring-opening and chain propagation.
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