Indium complexes incorporating bidentate substituted pyrrole ligand: Synthesis, characterization, and ring-opening polymerization of ε-caprolactone

I. Ping Hsieh, Chun Hsueh Huang, Hon Man Lee, Pei Cheng Kuo, Jui-Hsien Huang, Hong I. Lee, Jwu Ting Cheng, Gene Hsiang Lee

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The reactions of InCl3 with two and three equivalents of lithium (2-dimethylaminomethyl)pyrrolate (1) in diethyl ether solutions afford In[C4H3N(CH2NMe2)]2Cl (2) and In[C4H3N(CH2NMe2)]3 (3) in 92% and 50% yield, respectively. Subsequent reactions of 2 with MeLi and Li(CCPh) yield In[C4H3N(CH2NMe 2)]2Me (4) and In[C4H3N(CH 2NMe2)]2(CCPh) (5), respectively. All compounds were confirmed by 1H and 13C NMR spectroscopy and compounds 3, 4, and 5 were further characterized by single-crystal X-ray crystallography. Compounds 2, 3, and 4 showed moderate catalytic activity toward the ring-opening polymerization of ε-caprolactone.

Original languageEnglish
Pages (from-to)497-504
Number of pages8
JournalInorganica Chimica Acta
Issue number2
Publication statusPublished - 2006 Jan 20


All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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