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Carbon 13 NMR study of oligo(propylene oxide)s

✍ Scribed by Alain Le Borgne; Michel Moreau; Valérie Vincens

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
378 KB
Volume
195
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Samples of dimer and trimer derived from chiral propylene oxide, having head‐to‐tail linkages were prepared using an aluminium complex of a Schiff's base and were studied by means of ^13^C NMR spectroscopy. Based on these spectroscopic data and on J‐Modulated Spin Echo Technique (JMSET), analysis of a racemic oligomer (DP~n~ ≈ 11) was carried out. Resonances of carbon atoms of central and terminal units were identified. End‐group carbon atoms (with the exception of CH~2~Cl) present large configurational effects as compared to internal carbon atoms.

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