Inorganic Chemistry
ARTICLE
alkoxideꢀAl bond (formed by loss of CO2/CO2 deinsertion)
and not an alkylcarbonateꢀAl bond, see Scheme 5.
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Finally, we note that the relative rates of ring-opening of PO by
AlꢀX bonds follows the order X = O2CR > O2COR > OR. This
allows for the copolymerization of PO and organic anhydrides
such as succinic anhydride with the formation of polyesters, e.g.,
polypropylene succinate.76,77 These and other reactions involv-
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complexes are currently being explored.
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’ ASSOCIATED CONTENT
(27) Niu, Y.; Zhang, W.; Li, H.; Chen, X.; Sun, J.; Zhuang, X.; Jing, X.
Polymer 2009, 50, 441–446.
(28) Li, B.; Zhang, R.; Lu, X. Macromolecules 2007, 40, 2303–2307.
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S
Supporting Information. Listings of FT-IR spectra of
b
azide binding, NMR and MS data of polymers, and NMR spectra
of catalyst precursors used. This material is available free of
(30) Cohen, C. T.; Chu, T.; Coates, G. W. J. Am. Chem. Soc. 2005,
127, 10869–10878.
’ AUTHOR INFORMATION
(31) Lu, X.; Shi, L.; Wang, Y.; Zhang, R.; Zhang, Y.; Peng, X.; Zhang,
Z.; Li, B. J. Am. Chem. Soc. 2006, 128, 1664–1674.
(32) Paddock, R. L.; Nguyen, S. T. Macromolecules 2005, 38,
6251–6253.
Corresponding Author
*E-mail: chisholm@chemistry.ohio-state.edu.
(33) Shi, L.; Lu, X.; Zhang, R.; Peng, X.; Zhang, C.; Li, J.; Peng, X.
Macromolecules 2006, 39, 5679–5685.
’ ACKNOWLEDGMENT
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