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- W1992092192 endingPage "4419" @default.
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- W1992092192 abstract "Abstract Lanthanide isopropoxides supported by carbon‐bridged bisphenolate ligands of 2,2′‐ethylene‐bis(4,6‐di‐ tert ‐butylphenoxo) {[(EDBP)Ln(μ‐OPr i )(THF) 2 ] 2 , where Ln is Nd ( 1 ), Sm ( 2 ), or Yb ( 3 ) and THF is tetrahydrofuran} were synthesized by protic exchange reactions in high yields with Cp 3 Ln compounds as raw materials, and complex 1 was structurally characterized. Complexes 1 – 3 were shown to be efficient initiators for the ring‐opening polymerization of ε‐caprolactone (ε‐CL) and 2,2‐dimethyltrimethylene carbonate (DTC). Complexes 1 – 3 could initiate the controlled polymerization of ε‐CL, and the polymerization rate was first‐order with respect to the monomer. The influence of the reaction conditions on the monomer conversion, molecular weight, and molecular weight distribution of the resultant polymers was investigated. End‐group analyses of the oligomers of ε‐CL and DTC showed that the polymerization underwent a coordination–insertion mechanism. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 4409–4419, 2006" @default.
- W1992092192 created "2016-06-24" @default.
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- W1992092192 date "2006-06-20" @default.
- W1992092192 modified "2023-10-17" @default.
- W1992092192 title "Homopolymerization of cyclic esters initiated by lanthanide isopropoxides supported by 2,2′-ethylene-bis(4,6-di-tert-butylphenolate) ligands" @default.
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- W1992092192 doi "https://doi.org/10.1002/pola.21550" @default.
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