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1 H and 13 C NMR Spectroscopy as a Tool To Probe the Microstructures of Different Types of Poly(vinyl formal)

✍ Scribed by Pollers, I.; Adriaensens, P.; Carleer, R.; Vanderzande, D.; Gelan, J.

Book ID
127260157
Publisher
American Chemical Society
Year
1996
Tongue
English
Weight
213 KB
Volume
29
Category
Article
ISSN
0024-9297

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## Abstract According to the ^1^H, ^13^C and ^15^N NMR spectroscopic data and __ab initio__ calculations, the strong Nο£ΏHΒ·Β·Β·O intramolecular hydrogen bond in the __Z__‐isomers of 2‐(2‐acylethenyl)pyrroles causes the decrease in the absolute size of the ^1^__J__(N,H) coupling constant by 2 Hz in CDCl