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17O nuclear magnetic resonance spectroscopic study of substituted phthalic anhydrides and phthalides

✍ Scribed by Boykin, David W.; Baumstark, Alfons L.; Kayser, Margaret M.; Soucy, Chantal M.

Book ID
111675896
Publisher
NRC Research Press
Year
1987
Tongue
French
Weight
234 KB
Volume
65
Category
Article
ISSN
0008-4042

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17O NMR spectroscopic study of steric hi
17O NMR spectroscopic study of steric hindrance in phthalic anhydrides and phthalides
✍ A.L. Baumstark; P. Balakrishnan; D.W. Boykin πŸ“‚ Article πŸ“… 1986 πŸ› Elsevier Science 🌐 French βš– 278 KB

170 NMR data for sterically hindered phthalic anhydrides and phthalides showed unusual deshielding effects which were correlated with in-plane bond angle distortions (X-ray results and MM2 calculations); indicative of van der Waals repulsions. Table I. 170 NMR Data (21 ppm) for For both lb and lc, t