S S Moosath
Articles written in Proceedings – Section A
Volume 43 Issue 4 April 1956 pp 213-219
The reaction of hydrated ceric oxide with hydrogen chloride in methyl alcohol under controlled conditions did not result in the isolation of hexachloroceric acid.
Hexachloroceric acid has been obtained as a crystalline product from the reaction of hydrated ceric oxide and hydrogen chloride in dioxane.
Conditions have been worked out for obtaining the crystals in a pure form. Analytical results agree with the formula H2CeCl6, 4 C4H8O2. It has not been possible to obtain the acid without the dioxane of solvation.
The pyridinium salt of the acid has been prepared, the analytical values agree with the formula (C5H5NH)2CeCl6 for the complex.
Volume 43 Issue 4 April 1956 pp 220-223
Benzene, carbon tetrachloride, formamide, cyclohexanol, anisole and acetone are not suitable media for the reaction of hydrated ceric oxide and hydrogen chloride.
The reaction is found to take place to a limited extent in ether and nearly to completion in ethylene glycol mono-methyl ether forming hexachloroceric acid.
Volume 43 Issue 5 May 1956 pp 265-271
A solvent is not necessary for the reaction of hydrogen chloride with hydrated ceric oxide to form hexachloroceric acid. The product of reaction is stable at low temperatures. Under optimum conditions, the percentage of hydrochloroceric acid produced was about 60.
Volume 43 Issue 5 May 1956 pp 272-275
Volume 47 Issue 6 June 1958 pp 344-347
A new method for the preparation of metallic chloride dioxianates is described. The method is very elegant and simple and appears to be of general application. In the present paper, isolation of mercuric chloride dioxanate by this new method is described.
Volume 47 Issue 6 June 1958 pp 373-378
The system thorium oxalate-ammonium oxalate-water has been investigated by physico-chemical methods. A new procedure is adopted in preparing the solution for these studies by the mono-variation method. Data have been presented to prove the existence of two complexes in solution from measurements of electrical resistance, pH and relative viscosity.
Volume 48 Issue 2 August 1958 pp 76-83
Optimum conditions for the removal of phosphatic content in monazite sand by sintering with sodium carbonate are described in the previous papers in the series.† Results of investigation by D.T.A. and X-ray diffraction of the solid-solid reaction between monazite sand and sodium carbonate are now given. The D.T.A. curve shows that it is a slow exothermic reaction. X-ray diffraction patterns, besides confirming the constituents in the sintered product identified chemically, show the presence of a new phase.
Volume 48 Issue 6 December 1958 pp 317-323
Suitable conditions for preserving hexachloroceric acid crystals without decomposition have been found out from stability studies under various conditions. From studies on spectral characteristics and electrical conductivity in dioxan and methyl alcohol solutions, a mode of dissociation has been postulated.
Volume 48 Issue 6 December 1958 pp 324-329
Pyridinium ceric chloride has been prepared and analysed. Its structure is elucidated from studies on mode of formation, spectral characteristics and vapour pressure data. Attempts to prepare complexes with sodium and ammonium chlorides are also presented.
Volume 50 Issue 5 November 1959 pp 336-341
Cupric chloride dioxanate has been prepared by the new method developed by the authors and shown to be the monodioxanate. Stability studies and effects of crystallisation from different solvents are reported.
The tridioxanate of ferric chloride is prepared and studied. Existence of two lower dioxanates of ferric chloride has been indicated.
Volume 52 Issue 2 August 1960 pp 58-62
Monodioxanates of the chlorides of cobalt (ii) and nickel (ii) have been prepared by making hydrogen chloride gas to react with the dry hydroxides, suspended in dioxane. The stability and general characteristics of these dioxanates are recorded. Lower dioxanates, with metal halide to dioxane ratio as 2 : 1, have been isolated from the alcoholic solutions of the monodioxanates.