C R Kanekar
Articles written in Proceedings – Section A
Volume 16 Issue 5 November 1942 pp 307-318
The susceptibilities of a number of barium salts of inorganic and organic acids have been determined by Guoy’s Balance and using all possible available values for the anions, the ionic susceptibility of barium has been calculated. In the case of salts of inorganic acids the mean ionic susceptibility of barium agrees well with the values theoretically calculated by Slater’s and Angus’s methods. The mean value deduced from the salts of organic acids is found to be higher than the calculated value and that found from inorganic salts. The probable reasons have been discussed in detail. It has been suggested that the values of several anions need revision. The ionic radius of barium has also been calculated and has been compared with the value observed by Wassastjerna.
Volume 31 Issue 5 May 1950 pp 289-299
Volume 31 Issue 6 June 1950 pp 389-399
Volume 54 Issue 6 December 1961 pp 331-340
This paper presents the analysis of the proton magnetic resonance spectra of 2:4 dinitro phenol, 1-chloro 2:4 dinitro benzene, 1-nitro, 2-methyl, 3-chloro benzene (2-chloro, 6-nitro toluene) and 5-sulpho, 3-nitro benzoic acid based on the exact solution obtained by Jha for the splitting of NMR lines of a three nuclei system of the ABC type.
Volume 56 Issue 2 August 1962 pp 71-85
The high resolution proton magnetic resonance spectra of AB, ABC and ABCD systems in fourteen coumarins have been studied. Chemical shifts and spin coupling constants for the protons in various positions in the benzo-
The results do not substantiate resonance of the naphthalene type in coumarin as suggested to explain its dipole moment.
Volume 56 Issue 2 August 1962 pp 86-95
The analysis of the NMR spectra of five nuclei each with spin 1/2 has been undertaken. For such systems the nuclei may be arranged in groups of different symmetry. The proton magnetic resonance spectrum of nitrobenzene is an example of A2B2C type. From the analysis of this spectrum the values of various coupling constants and chemical shifts have been determined.
Volume 63 Issue 1 January 1966 pp 9-19
The NMR spectra of
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 65 Issue 6 June 1967 pp 353-360
The relation between proton chemical shifts and pi-electron densities in aromatic systems suggested by Schug and Dech has been modified so as to include contributions due to steric effects. The proton chemical shifts in
Volume 66 Issue 4 October 1967 pp 189-195
The H-bonding of CH3OH, C6H5SH and CHCl3 with N:N Dimethyl formamide and N:N Dimethyl acetamide has been studied using proton magnetic resonance. It has been observed that the strength of interaction is greater for dimethyl acetamide than for dimethyl formamide for the same solvent. For the same solute, however, the strength increases in the order chloroform, thiol and alcohol. The equilibrium constant for 1:1 complex of these solutes in the chloroform solvent has been estimated. In the case of benzene thiol, complex formation between the pi-electrons of the phenyl ring and the amides has been detected. It has also been observed that the exchange rate of OH proton of CH3OH in the dimethyl formamide decreases considerably.