Di- and trivalent rare earth complexes stabilized by sterically demanding aminopyridinato ligands as initiators in ring-opening polymerization reactions of epsilon-caprolactone
GUILLAUME, Sophie
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
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Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
GUILLAUME, Sophie
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
< Leer menos
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Idioma
en
Article de revue
Este ítem está publicado en
Journal of Polymer Science Part A: Polymer Chemistry. 2007, vol. 45, n° 16, p. 3611-3619
Wiley
Resumen en inglés
Salt elimination protocols using Ap*K {Ap*H = (2,6-diisopropyl-phenyl)[6-(2,4,6-triisopropyl-phenyl)-pyridin-2-y1]-amine} lead to the rare earth aminopyridinato complex [Ap*LuCl2(thf)(2)], 4. Results of X-ray crystal ...Leer más >
Salt elimination protocols using Ap*K {Ap*H = (2,6-diisopropyl-phenyl)[6-(2,4,6-triisopropyl-phenyl)-pyridin-2-y1]-amine} lead to the rare earth aminopyridinato complex [Ap*LuCl2(thf)(2)], 4. Results of X-ray crystal structure analyses of 4 and the corresponding single THF coordinated dimer are discussed. Ring-opening polymerization of epsilon-caprolactone initiated by complexes [Ap*LaBr2(thf)(3)], 2, [Ap*YbI(thf)(2)](2), 3 or 4 in the presence of NaBH4 allows the preparation, in a short reaction time, of alpha,omega-dihydroxytelechelic polymers with high molar mass ((M) over bar (n) up to 50,000) and moderate molar mass distributions (1.3 < <(M)over bar>(w)/(M) over bar (n) < 1.6). (C) 2007 Wiley Periodicals, Inc.< Leer menos
Palabras clave en inglés
aminopyridinato complex [Ap*LuCl2(thf)(2)]
X-ray crystal structure analyses
rare earth
ring-opening polymerization of epsilon-caprolactone
synthesis
aminopyridinato ligands
borohydride
catalysts
polyesters
Orígen
Importado de HalCentros de investigación