文献类型：期刊文献

中文题名：Synthesis,characterization and catalytic applications of triden-tate Schiff base derivatives of bis and mono(cyclopentadienyl)-lanthanocene complexes

英文题名：Synthesis,characterization and catalytic applications of triden-tate Schiff base derivatives of bis and mono(cyclopentadienyl)-lanthanocene complexes

作者：约瑟夫.穆罕默德[1];刘乾才[1];黄吉玲[1];钱延龙[1]

机构：[1]Laboratory of Organometallic Chemistry,East China University of Science and Technology,Shanghai 200237, China

年份：2000

卷号：18

期号：5

起止页码：740

中文期刊名：Chinese Journal of Chemistry

外文期刊名：中国化学（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2011_2012】；

基金：Project supported by the National Natural Science Foundation of China (No.29871919) and Sino-Pec (No.29734145);the State Key Laboratory of Coordination Chemistry, Nanjing University

语种：中文

中文关键词：Lanthanocene;tridentate Schiff base;synthesis;X-ray determination

外文关键词：Lanthanocene;tridentate Schiff base;synthesis;X-ray determination

摘要：Seven kinds of lanthanocene complexes were prepared by the reaction of tridentate Schiff base | N-(2-methoxyphenyl)salicylideneamine with tris(cyclopentadienyl) lanthanide tetrahydrofuranate or bis (cyclopentadienyl) lanthanide chloride tetrahydrofuranate in THF. All the complexes were characterized by MS, EA and IR respectively. The structure of |Cp2LnC14U13NO2) Ln = Sm, Dy, Y, Er| (1–4) was further confirmed by X-ray determination of Cp2Sm(C14H13NO2) (1) which indicates that the complex is monomeric in which central metal is coordinatively saturated by two cyclopentadienyl rings, two oxygens and one nitrogen of the ligand. The isomerization of 1,5-hexadiene explains that complexes (1–4) isomerize this monomer into a mixture of 1,4-hexadiene, 2,4-hexadiene, 1,3-hexadiene, methylenecyclopentane and methyl–cyclopentene. Similarity complexes |CpLn(a) C14 H13NO2) (THF) (Ln=Sm, Dy, Y, Er)| (5–7) polymerize methyl-methacrylate (MMA) to give polyMMA (PMMA) in 51.8% yield and high molecular weight (274 × 103), which shows narrow molecular weight distributions and partially syndiotactic.
Seven kinds of lanthanocene complexes were prepared by the reaction of tridentate Schiff base | N-(2-methoxyphenyl)salicylideneamine with tris(cyclopentadienyl) lanthanide tetrahydrofuranate or bis (cyclopentadienyl) lanthanide chloride tetrahydrofuranate in THF. All the complexes were characterized by MS, EA and IR respectively. The structure of |Cp2LnC14U13NO2) Ln = Sm, Dy, Y, Er| (1–4) was further confirmed by X-ray determination of Cp2Sm(C14H13NO2) (1) which indicates that the complex is monomeric in which central metal is coordinatively saturated by two cyclopentadienyl rings, two oxygens and one nitrogen of the ligand. The isomerization of 1,5-hexadiene explains that complexes (1–4) isomerize this monomer into a mixture of 1,4-hexadiene, 2,4-hexadiene, 1,3-hexadiene, methylenecyclopentane and methyl–cyclopentene. Similarity complexes |CpLn(a) C14 H13NO2) (THF) (Ln=Sm, Dy, Y, Er)| (5–7) polymerize methyl-methacrylate (MMA) to give polyMMA (PMMA) in 51.8% yield and high molecular weight (274 × 103), which shows narrow molecular weight distributions and partially syndiotactic.