The influence of temperature, within the range 285-340 K, on spectral characteristics of n(NH) absorption bands in 'free' Nmethyl aniline, N-ethyl aniline, diphenylamine and N-methyl-4-nitroaniline in CCl as well as in their hydrogen bonded complexes 4 with acetonitrile, tetrahydrofurane, dimethylfo
Spectroscopic effects and thermodynamic parameters of hydrogen bonds in N-substituted ureas
โ Scribed by T. V. Kozlova; V. V. Zharkov
- Publisher
- Springer US
- Year
- 1981
- Tongue
- English
- Weight
- 521 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0021-9037
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Aromatic I3C chemical shifts of 4-and hubstituted pyridine N-oxides in aprotic and protic solvents are reported and discussed. Changes in chemical shifts caused by hydrogen bonding and protonation are much smaller than those induced by a substituent, and are not related to the pK, values of N-oxides