Journal of Polymer Science, Part A: Polymer Chemistry, volume 44, issue 17, pages 5182-5191
Alternating copolymerization of propylene oxide and carbon dioxide with highly efficient and selective (salen)Co(III) catalysts: Effect of ligand and cocatalyst variation
Publication type: Journal Article
Publication date: 2006-07-28
Quartile SCImago
— Quartile WOS
—
Impact factor: —
ISSN: 0887624X, 10990518
Materials Chemistry
Organic Chemistry
Polymers and Plastics
Abstract
Synthetic routes to a series of new (salen)CoX (salen = N,N′-bis(salicylidene)-1,2-diaminoalkane; X = Br or pentafluorobenzoate (OBzF5)) species are described. Several of these complexes are active for the copolymerization of propylene oxide (PO) and CO2, yielding regioregular poly(propylene carbonate) (PPC) without the generation of propylene carbonate byproduct. Variation of the salen ligand, as well as the inclusion of organic-based ionic or Lewis basic cocatalysts, has dramatic effects on the resultant (salen) CoX catalytic activity. Highly active (R,R)-(salen-1)CoOBzF5 (salen-1 = N,N′-bis(3,5- di-tert-butylsalicylidene)-1,2-diaminocyclohexane) catalysts with [Ph4P]Cl or [PPN]Y ([PPN] = bis(triphenylphosphine)iminium; Y = Cl or OBzF5) cocatalysts exhibited turnover frequencies up to 720 h−1 for rac-PO/CO2 copolymerization, yielding PPC with greater than 90% head-to-tail connectivity. Additionally, the (R,R)-(salen-1)CoOBzF5/[PPN]Cl catalyst system demonstrated a krel of 9.7 for the enchainment of (S)- over (R)-PO when the copolymerization was carried out at low temperatures. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 5182–5191, 2006
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Citations by publishers
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Cohen C. T., Coates G. W. Alternating copolymerization of propylene oxide and carbon dioxide with highly efficient and selective (salen)Co(III) catalysts: Effect of ligand and cocatalyst variation // Journal of Polymer Science, Part A: Polymer Chemistry. 2006. Vol. 44. No. 17. pp. 5182-5191.
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Cohen C. T., Coates G. W. Alternating copolymerization of propylene oxide and carbon dioxide with highly efficient and selective (salen)Co(III) catalysts: Effect of ligand and cocatalyst variation // Journal of Polymer Science, Part A: Polymer Chemistry. 2006. Vol. 44. No. 17. pp. 5182-5191.
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TY - JOUR
DO - 10.1002/pola.21606
UR - https://doi.org/10.1002/pola.21606
TI - Alternating copolymerization of propylene oxide and carbon dioxide with highly efficient and selective (salen)Co(III) catalysts: Effect of ligand and cocatalyst variation
T2 - Journal of Polymer Science, Part A: Polymer Chemistry
AU - Cohen, Claire T
AU - Coates, Geoffrey W.
PY - 2006
DA - 2006/07/28 00:00:00
PB - Wiley
SP - 5182-5191
IS - 17
VL - 44
SN - 0887-624X
SN - 1099-0518
ER -
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@article{2006_Cohen,
author = {Claire T Cohen and Geoffrey W. Coates},
title = {Alternating copolymerization of propylene oxide and carbon dioxide with highly efficient and selective (salen)Co(III) catalysts: Effect of ligand and cocatalyst variation},
journal = {Journal of Polymer Science, Part A: Polymer Chemistry},
year = {2006},
volume = {44},
publisher = {Wiley},
month = {jul},
url = {https://doi.org/10.1002/pola.21606},
number = {17},
pages = {5182--5191},
doi = {10.1002/pola.21606}
}
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Cohen, Claire T., and Geoffrey W. Coates. “Alternating copolymerization of propylene oxide and carbon dioxide with highly efficient and selective (salen)Co(III) catalysts: Effect of ligand and cocatalyst variation.” Journal of Polymer Science, Part A: Polymer Chemistry, vol. 44, no. 17, Jul. 2006, pp. 5182-5191. https://doi.org/10.1002/pola.21606.