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- W2341386101 abstract "New catalysts based on Yb(salen) complexes active for the copolymerization of cyclohexene oxide (CHO) and CO2 to give poly(cyclohexene)carbonate (PCHC) are reported. In combination with cocatalytic, nucleophilic chloride additives these new (binary) catalysts provided good conversion and selectivity for PCHC formation with average turnover frequencies of up to 35 h–1 and narrow molecular weight distributions. The best results were obtained with the binary catalyst system 1 (0.1 mol %)/NBu4Cl (0.05 mol %); at 90 °C a conversion of 57% was reached after 18 h with a TOF of 31 h–1, and the polycarbonate had an Mn of 10.2 kg/mol and a PDI of 1.54. Comparative catalysis studies have also been performed with a series of literature systems based on transition metal/lanthanide salen complexes, and the newly presented catalysts show comparatively good activity as well as copolymerization selectivity. MALDI-ToF mass spectrometric analysis revealed that trace water contamination and/or traces of 1,2-cyclohexanediol w..." @default.
- W2341386101 created "2016-06-24" @default.
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- W2341386101 date "2015-11-11" @default.
- W2341386101 modified "2023-10-16" @default.
- W2341386101 title "Copolymerization of CO<sub>2</sub> and Cyclohexene Oxide Mediated by Yb(salen)-Based Complexes" @default.
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- W2341386101 doi "https://doi.org/10.1021/acs.macromol.5b01880" @default.
- W2341386101 hasPublicationYear "2015" @default.
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