Articles written in Proceedings – Section A
Volume 12 Issue 3 September 1940 pp 290-305
The kinetics of the olefin-bromine reaction has been studied in acetic acid solution using three related aliphatic monobasic acids. The course of the reaction clearly indicates a chain mechanism. It is found that the reaction is of the first order with respect to the olefin and the influence of the catalyst hydrogen bromide is pronounced, the experimental evidence favouring a complex formation between olefin and catalyst.
Volume 12 Issue 3 September 1940 pp 306-311
The dark reaction, catalysed and uncatalysed, between methyl substituted acrylic acids and bromine has been investigated at 25°C., 35°C., 42°C., and 50°C. in glacial acetic acid solution. An analysis of the critical increment shows not only group influence but also an orientation effect.
Volume 13 Issue 4 April 1941 pp 259-262
When present in sufficient amounts, different catalysts have been shown to influence the addition of bromine to dimethylacrylic acid in varying degrees. No negative catalysts have been found so far.
Volume 55 Issue 5 May 1962 pp 311-323
A numerical estimation of the angles between wave-normal and vibration direction of the elastic waves for various classes of crystal has been given. The anisotropy in elastic wave propagation is strikingly manifested by the crystal Ammonium di-hydrogen phosphate belonging to the tetragonal system, which shows a maximum inclination of thirty-four degrees. Numerical studies have also been carried out for this crystal to obtain an estimate of the deviation of the ray vector from the direction of the wavenormal.