Synthesis, Characterization, and Catalytic Activity of Some Neodymium(III), Ytterbium(II), and Europium(II) Complexes with Pyrrolidinyl‐ and Piperidinyl‐Functionalized Indenyl Ligands
Identifieur interne : 005827 ( Main/Merge ); précédent : 005826; suivant : 005828Synthesis, Characterization, and Catalytic Activity of Some Neodymium(III), Ytterbium(II), and Europium(II) Complexes with Pyrrolidinyl‐ and Piperidinyl‐Functionalized Indenyl Ligands
Auteurs : Shuangliu Zhou [République populaire de Chine] ; Shaowu Wang [République populaire de Chine] ; Enhong Sheng [République populaire de Chine] ; Lijun Zhang [République populaire de Chine] ; Zeyan Yu [République populaire de Chine] ; Xiaobing Xi [République populaire de Chine] ; Guodong Chen [République populaire de Chine] ; Wei Luo [République populaire de Chine] ; Yan Li [République populaire de Chine]Source :
- European Journal of Inorganic Chemistry [ 1434-1948 ] ; 2007-04.
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Abstract
A series of organolanthanide complexes with pyrrolidinyl‐ and piperidinyl‐ functionalized indenyl ligands were synthesized by reaction of [(Me3Si)2N]3LnIII(μ‐Cl)Li(THF)3 (Ln = Yb, Eu, Nd) with the corresponding indene compounds. Treatment of [(Me3Si)2N]3YbIII(μ‐Cl)Li(THF)3 with 2 equiv. of C9H6‐1‐R‐3‐CH2SiMe2NC4H8 (R = H, CH3) in refluxing toluene produced the corresponding organoytterbium(II) complexes with formula [ηm:η1‐C9H5‐1‐R‐3‐CH2SiMe2NC4H8]2YbII [m = 5, R = H (2); m = 3, R = CH3 (3)] in 49 and 58 % yield, respectively. Treatment of [(Me3Si)2N]3LnIII(μ‐Cl)Li(THF)3 (Ln = Yb, Eu, Nd) with 2 equiv. of C9H7CH2SiMe2NC5H10 (1) in toluene at moderately high temperatures afforded, after workup, the corresponding organolanthanide complexes with formula [η5:η1‐C9H6CH2SiMe2NC5H10]2YbII (4), [η5:η1‐C9H6CH2SiMe2NC5H10]2EuII (5), and [C9H6CH2SiMe2NC5H10]3NdIII·THF (6) in 37, 71, and 29 % yield, respectively. All the compounds were fully characterized by spectroscopic methods and elemental analyses. The structures of complexes 2, 3, 5, and 6 were additionally determined by single‐crystal X‐ray analyses. The catalytic properties of all the organolanthanide complexes on the ring‐opening polymerization of ϵ‐caprolactone have been studied. The effects of temperature, solvent, and coordination on the catalytic activities of the complexes were examined. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
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DOI: 10.1002/ejic.200601102
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xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Anhui Key Laboratory of Functional Molecular Solids, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000</wicri:regionArea><wicri:noRegion>Anhui 241000</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032</wicri:regionArea><wicri:noRegion>Shanghai 200032</wicri:noRegion></affiliation></author><author><name sortKey="Sheng, Enhong" sort="Sheng, Enhong" uniqKey="Sheng E" first="Enhong" last="Sheng">Enhong Sheng</name><affiliation wicri:level="1"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Anhui Key Laboratory of Functional Molecular Solids, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000</wicri:regionArea><wicri:noRegion>Anhui 241000</wicri:noRegion></affiliation></author><author><name sortKey="Zhang, Lijun" sort="Zhang, Lijun" uniqKey="Zhang L" first="Lijun" last="Zhang">Lijun Zhang</name><affiliation wicri:level="1"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Anhui Key Laboratory of Functional Molecular Solids, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000</wicri:regionArea><wicri:noRegion>Anhui 241000</wicri:noRegion></affiliation></author><author><name sortKey="Yu, Zeyan" sort="Yu, Zeyan" uniqKey="Yu Z" first="Zeyan" last="Yu">Zeyan Yu</name><affiliation wicri:level="1"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Anhui Key Laboratory of Functional Molecular Solids, Institute of Organic Chemistry, School of Chemistry and Materials Science, Anhui Normal 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Treatment of [(Me3Si)2N]3YbIII(μ‐Cl)Li(THF)3 with 2 equiv. of C9H6‐1‐R‐3‐CH2SiMe2NC4H8 (R = H, CH3) in refluxing toluene produced the corresponding organoytterbium(II) complexes with formula [ηm:η1‐C9H5‐1‐R‐3‐CH2SiMe2NC4H8]2YbII [m = 5, R = H (2); m = 3, R = CH3 (3)] in 49 and 58 % yield, respectively. Treatment of [(Me3Si)2N]3LnIII(μ‐Cl)Li(THF)3 (Ln = Yb, Eu, Nd) with 2 equiv. of C9H7CH2SiMe2NC5H10 (1) in toluene at moderately high temperatures afforded, after workup, the corresponding organolanthanide complexes with formula [η5:η1‐C9H6CH2SiMe2NC5H10]2YbII (4), [η5:η1‐C9H6CH2SiMe2NC5H10]2EuII (5), and [C9H6CH2SiMe2NC5H10]3NdIII·THF (6) in 37, 71, and 29 % yield, respectively. All the compounds were fully characterized by spectroscopic methods and elemental analyses. The structures of complexes 2, 3, 5, and 6 were additionally determined by single‐crystal X‐ray analyses. The catalytic properties of all the organolanthanide complexes on the ring‐opening polymerization of ϵ‐caprolactone have been studied. The effects of temperature, solvent, and coordination on the catalytic activities of the complexes were examined. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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