摘要/Abstract
RE（CH2SiMe3）3（THF）2和1.5 equiv.（C4H3NHCH2）2NCH3（1）反应合成得到含氮原子桥联吡咯基稀土金属双核配合物[η1：η1：η1-（C4H3NCH2）2NCH3]RE{m-η5：η5：η1-（C4H3NCH2）2NCH3}RE[η1：η1：η1-（C4H3NCH2）2NCH3]（THF）[RE=Y（2），Er（3），Yb（4）]，所得配合物经过核磁共振、红外和元素分析表征，配合物2和4经单晶X-Ray进一步确认结构.同时研究了稀土配合物作为单一组分催化剂催化e-内酯的开环聚合反应.
关键词: 稀土金属, 配合物, e-己内酯, 开环聚合
Reaction of RE(CH2SiMe3)3(THF)2 with 1.5 equiv. of (C4H3NHCH2)2NCH3 (1) in toluene gave nitrogen-containing bridged dipyrrolyl dinuclear rare-earth metal complexes[η1:η1:η1-(C4H3NCH2)2NCH3]RE{m-η5:η1:η5:η1:η1-(C4H3NCH2)2N-CH3}RE[η1:η1:η1-(C4H3NCH2)2NCH3](THF)[RE=Y (2), Er (3), Yb (4)]. All complexes were fully characterized by spectroscopic methods and elemental analyses. The structures of complexes 2 and 4 were further determined by single-crystal X-ray diffraction. The catalytic properties of rare-earth metal complexes on the ring-opening polymerization of e-caprolactone have been studied.
Key words: rare-earth metal, complex, e-caprolactone, ring-opening polymerization
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