Articles written in Journal of Chemical Sciences
Volume 91 Issue 1 February 1982 pp 57-63 Physical and Theoretical
Hydrogen bond formation between N−H of acetanilide and π electrons of some arenes has been studied by infrared spectroscopy. In the mixtures of CCl4 and arenes new N−H bands appeared at lower frequencies in addition to the N−H band observed in pure CCl4. The lower frequency bands are assigned to the N−H bonded to π electrons of the arenes. Formation constants of these complexes have been determined with different arene concentrations. The frequency shifts of the N−H band and the formation constants were found to increase with increase in alkyl substitution in the benzene ring. The relative frequency shifts and logarithmic values of formation constants bear linear relationship with each other.
Volume 99 Issue 5-6 December 1987 pp 419-424 Physical and Theoretical
The conformational analysis of dibenzylideneacetone has been carried out using IR spectroscopy. Appearance of a triplet C=O band is attributed to the coexistence of three conformers viz s-
Volume 101 Issue 1 February 1989 pp 75-82 Physical and Theoretical
The conformational analyses of α-mono, α-di and α-trichloroacetanilides have been carried out using IR spectroscopy. α-Monochloro, dichloro and trichloroacetanilides were found to exist in only one conformation in CH2Cl2 and CHC13. The existence of all these anilides in single conformation is due to intramolecular H-bond formation between N−H and Cl.
In CH3CN, the broadening of C–0 bands of monochloroacetanilides and their bifurcation in α-dichloroacetanilides indicated the existence of two rotamers due to the breaking of chelation by the solvent.
Volume 102 Issue 1 February 1990 pp 45-50
The conformational analyses of substituted methyl styryl ketones and phenyl styryl ketones have been carried out using IR spectroscopy. The split in the C=O bands of these compounds is attributed to the existence of two conformations, viz.
Volume 134, 2022
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