M M Dhingra
Articles written in Proceedings – Section A
Volume 62 Issue 2 August 1965 pp 90-96
Proton magnetic resonance studies of the solutions of (
Volume 64 Issue 2 August 1966 pp 91-96
C13-F19 coupling constants have been measured in
The coupling constant in trifluoroacetic acid has also been measured in various solvents at several concentrations. A remarkable solvent effect on these couplings has been discovered; this appears-to be related to the dipole moment of the solvent.
Volume 64 Issue 5 November 1966 pp 315-320
A correlation between the dilution shifts of aromatic protons in non-polar, isotropic solvents and the aromaticity of the ring has been established. The aromaticities of thiophene, furan and pyridine have been estimated and the values thus obtained are compared with those obtained from other methods. The merits and the limitations of the method have been pointed out.
Volume 65 Issue 3 March 1967 pp 195-202
The effects of various polar and non-polar solvents on the proton chemical shifts in thiophene and its derivatives have been investigated. Results have been interpreted in terms of possible solute-solute, solute-solvent and solvent-solvent interactions in these systems.
Volume 65 Issue 3 March 1967 pp 203-209
The aromaticities of monosubstituted benzenes and thiophenes have been estimated using a method based on dilution shifts proposed earlier. As a result of such studies, a novel method for the study of molecular association in aromatic compounds has been proposed and utilised to study association in phenol and aniline.
Volume 65 Issue 5 May 1967 pp 265-269
Hydrogen bonding in
Volume 66 Issue 4 October 1967 pp 196-200
Interactions of 1, 1, 1 trifluoroacetone with proton donor solvents of the type RH [where R=HO, CH3S, CH3CH2CH2CH2S, CH3O, (CH3)2N, (C2H5)2N] have been investigated using NMR and infra-red techniques. Evidence of the formation of addition products of the type CF3.C(OH)R.CH3 where OH group is hydrogen-bonded with the fluorine of the CF3 group has been obtained.
Volume 67 Issue 6 June 1968 pp 322-327
Interactions of compounds containing OH group with acrylonitrile, 2 : 3 dichloropropene, allyl cyanide and allyl halides have been studied using NMR and IR techniques. Hydrogen bonds of the type O-H ··· N have been detected. With allyl halides bonds of the type O-H ··· Cl have been detected for allyl chloride only. The value of the equilibrium constant has been calculated for O-H ··· N bonds using IR studies.