Determination of C-13 NMR shifts for carbons Beta and Gamma to oxygen in poly(olefln sulfone)s

John F. Callan; Allan H. Fawcett

doi:10.1080/10236660701810836

Determination of C-13 NMR shifts for carbons Beta and Gamma to oxygen in poly(olefln sulfone)s

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Abstract

We have established parameters that enable the prediction of C-13 NMR chemical shifts for carbons beta and gamma to a sulfoxide or sulfone oxygen(s). Carbons beta were found to be moved upfield by similar to 21 ppm and those gamma downfield by similar to 7.7 ppm in chloroform. We tested these parameters by sequentially oxidizing poly(butyl thirane) to its corresponding polysulfone and assigned the new peaks observed in the C-13 NMR on the basis of their proximity to the oxygen atom(s).

Original language	English
Pages (from-to)	66-75
Journal	International Journal of Polymer Analysis and Characterization
Volume	13
Issue number	1
DOIs	https://doi.org/10.1080/10236660701810836
Publication status	Published - Jan 2008

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Callan, J. F., & Fawcett, A. H. (2008). Determination of C-13 NMR shifts for carbons Beta and Gamma to oxygen in poly(olefln sulfone)s. International Journal of Polymer Analysis and Characterization, 13(1), 66-75. https://doi.org/10.1080/10236660701810836

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abstract = "We have established parameters that enable the prediction of C-13 NMR chemical shifts for carbons beta and gamma to a sulfoxide or sulfone oxygen(s). Carbons beta were found to be moved upfield by similar to 21 ppm and those gamma downfield by similar to 7.7 ppm in chloroform. We tested these parameters by sequentially oxidizing poly(butyl thirane) to its corresponding polysulfone and assigned the new peaks observed in the C-13 NMR on the basis of their proximity to the oxygen atom(s).",

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AB - We have established parameters that enable the prediction of C-13 NMR chemical shifts for carbons beta and gamma to a sulfoxide or sulfone oxygen(s). Carbons beta were found to be moved upfield by similar to 21 ppm and those gamma downfield by similar to 7.7 ppm in chloroform. We tested these parameters by sequentially oxidizing poly(butyl thirane) to its corresponding polysulfone and assigned the new peaks observed in the C-13 NMR on the basis of their proximity to the oxygen atom(s).

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10.1080/10236660701810836