文献类型：期刊文献

英文题名：Magnesium, zinc, and calcium complexes based on tridentate nitrogen ligands: Syntheses, structures, and catalytic activities to the ring opening polymerization of rac-lactide

作者：Xu, Xin[1,2]; Chen, Yaofeng[2]; Zou, Gang[1]; Ma, Zhi[3]; Li, Guangyu[3]

机构：[1] Laboratory of Advanced Materials, Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [2] State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai, 200032, China; [3] Analytical Laboratory, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai, 200032, China

年份：2010

卷号：695

期号：8

起止页码：1155

外文期刊名：Journal of Organometallic Chemistry

收录：EI(收录号：20101212785467)

语种：英文

外文关键词：Single crystals - Metal ions - X ray diffraction - Zinc compounds - Metals - Catalyst activity - Metal complexes - Calcium compounds - Synthesis (chemical) - Nitrogen - Ligands

摘要：A series of magnesium, zinc, and calcium monoalkyl or monoamide complexes containing tridentate nitrogen ligands, CH3C(2,6-(iPr)2C6H3N)CHC(CH3) (NCH2CH2-D) (D = NMe2, N((CH2CH2)2CH2)), have been synthesized, and six of which were characterized by single-crystal X-ray diffraction. The X-ray diffraction results show that the metal complexes are all solvent-free monomers and the pendant arm D bonds to the metal ion. These metal complexes are highly active for the ring-opening polymerization of rac-lactide and give preference for heterotactic polylactide. Crown Copyright ? 2010.