摘要
研究了AlMe_(3)和ZnEt_(2)与ArNHCH_(2)CH_(2)OH(HL,Ar=2,6-Me_(2)C_(6)H_(3))的反应,合成了一个双核铝配合物[(Me_(2)Al)(L)]_(2)(1)及一个四核锌配合物[EtZn_(2)(L)_(3)]_(2)(2)。通过核磁、元素分析及单晶X射线衍射分析,对化合物1和2进行了详细的结构表征。结果表明,配合物1在固态下是一个中心对称的具有Al_(2)O_(2)骨架的二聚体,而配合物2存在一个Zn_(4)O_(6)核,其可被视为缺少一对相反顶点的2个并排立方体结构。初步的催化活性测试表明,铝配合物1对ε-己内酯的开环聚合反应没有催化活性,但锌配合物2却表现出很好的催化活性,且能很好地控制所得聚合物的分子量分布在较窄的范围。
Treatment of ArNHCH_(2)CH_(2)OH(HL,Ar=2,6-Me_(2)C_(6)H_(3))with AlMe_(3) and ZnEt_(2) resulted in the formation of a bi-aluminum complex,[(Me_(2)Al)(L)]_(2)(1),and a tetra-zinc complex,[EtZn_(2)(L)_(3)]_(2)(2),respectively.They were characterized by elemental analysis,NMR,and single-crystal X-ray diffraction analysis.Complex 1 is a crystallographically centrosymmetric dimer with an Al_(2)O_(2) core in the solid state,while a Zn_(4)O_(6) core is observed in 2,which can be viewed as two side-by-side cubes missing a pair of opposite vertices.Preliminary catalytic activity tests indicated that the aluminum complex 1 was inactive for the ring-opening polymerization(ROP)ofε-caprolactone,while the zinc complex 2 was a highly active initiator for the ROP ofε-caprolactone and could control the molecular weight distribution of the resulted polymers in narrow ranges.CCDC:2304200,1;2304201,2.
作者
刘安求
蔺隆
张德志
雷珺宇
王科峰
张蔚
庄俊鹏
郝海军
LIU Anqiu;LIN Long;ZHANG Dezhi;LEI Junyu;WANG Kefeng;ZHANG Wei;ZHUANG Junpeng;HAO Haijun(Department of Organic Chemistry,College of Chemistry,Beijing University of Chemical Technology,Beijing 100029,China;Petrochemical Research Institute,PetroChina Company Limited,Beijing 100195,China;PetroChina Harbin Petrochemical Company,Harbin 150056,China)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2024年第4期791-798,共8页
Chinese Journal of Inorganic Chemistry
基金
中国石油天然气股份有限公司石油化工研究院项目资助。
关键词
开环聚合
铝
锌
氨基乙醇
Ε-己内酯
ring-opening polymerization
aluminum
zinc
aminoethanol
ε-caprolactone
