Substituent effects on the rotational strength of the n??* carbonyl band
β Scribed by Lynden-Bell, R. M.; Saunders, V. P.
- Book ID
- 111916719
- Publisher
- The Royal Society of Chemistry
- Year
- 1967
- Weight
- 722 KB
- Volume
- 0
- Category
- Article
- ISSN
- 0022-4944
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π SIMILAR VOLUMES
## Abstract The barriers to rotation about the C(O)ο£ΏN bond for 13 Ξ±βalkylβ and Ξ±βhaloβsubstituted __N__βtheylβ__N__βmethylamides were determined by ^1^H NMR spectroscopy at coalescence temperature. Plots of Gibbs free energy (Ξ__G__Β°) and Gibbs energy of activation (Ξ__G__β‘) values against Charton'
The substantial effect of polar substituents on barriers to rotation about S-N bonds in substituted arenesulfenamides, X-C6H4SWR8R", has been attributed to (p-d)n conjugation between nitrogen and sulfur.' However, no such effect has been observed on barriers to syn, anti interconversion in N-alkylid