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Citation: CHEN Run-Hai, WANG Ping, LIU Qing, DONG Yun-Hui, LI Yue-Yun. Homoleptic Divalent Lanthanide “Open-Metallocenes” —Bis(2,4-tBu2-pentadienyl)Sm and Yb Complexes[J]. Chinese Journal of Inorganic Chemistry, ;2015, (6): 1239-1244. doi: 10.11862/CJIC.2015.169 shu

Homoleptic Divalent Lanthanide “Open-Metallocenes” —Bis(2,4-tBu2-pentadienyl)Sm and Yb Complexes

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    School of Chemical Engineering, Shandong University of Technology, Zibo, Shandong 255049, China

  • Corresponding author: LI Yue-Yun, 
  • Received Date: 15 February 2015
    Available Online: 20 April 2015

    Fund Project: 国国家自然科学基金(No.21405095) (No.21405095)山东省高等学校科技计划项目(No.J14LC09)资助项目。 (No.J14LC09)

  • The bis(2,4-tBu2-pentadienyl)lanthanide complexes (η5-Pdl')2Yb(THF) (1) and (η5-Pdl')2Sm(DME) (2) were successfully prepared in high yield by direct salt metathesis between LnI2 and 2,4-di-butyl-pentadienyl potassium(K(Pdl')). Complexes 1 and 2 could also be obtained smoothly from the reaction of LnCl3 and K(Pdl') through oxidation-reduction reaction. These two compounds were characterized and the X-ray single crystal analysis revealed a predominantly η5-pentadienyl-metal bonding. Both two compounds could initiate ring-opening polymerization of ε-caprolactone rapidly at room temperature and led to narrow polydispersities with high activity.
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