Matches in SemOpenAlex for { <https://semopenalex.org/work/W2323529321> ?p ?o ?g. }
- W2323529321 endingPage "9086" @default.
- W2323529321 startingPage "9077" @default.
- W2323529321 abstract "The uranyl aryloxide [UO2(OAr)2(THF)2] (Ar = 2,6-tBu2-C6H2) is an active catalyst for the ring-opening cyclo-oligomerization of ε-caprolactone and δ-valerolactone but not for β-butyrolactone, γ-butyrolactone, and rac-lactide. 1H EXSY measurements give the thermodynamic parameters for exchange of monomer and coordinated THF, and rates of polymerization have been determined. A comprehensive theoretical examination of the mechanism is discussed. From both experiment and theory, the initiation step is intramolecular and in keeping with the accepted mechanism, while computational studies indicate that propagation can go via an intermolecular pathway, which is the first time this has been observed. The lack of polymerization for the inactive monomers has been investigated theoretically and C–H···π interactions stabilize the coordination of the less rigid monomers." @default.
- W2323529321 created "2016-06-24" @default.
- W2323529321 creator A5014378883 @default.
- W2323529321 creator A5033270163 @default.
- W2323529321 creator A5036932508 @default.
- W2323529321 creator A5086637541 @default.
- W2323529321 date "2013-07-23" @default.
- W2323529321 modified "2023-09-23" @default.
- W2323529321 title "New Mechanism for the Ring-Opening Polymerization of Lactones? Uranyl Aryloxide-Induced Intermolecular Catalysis" @default.
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