A STUDY OF ION-ION AND ION-SOLVENT INTERACTIONS
Abstract
The ultraviolet absorption properties of solutions of iodide ion in polar solvents has been discussed by Smith and Symons in terms of a square-well model which crudely resembles the model adopted for the description of F-centres in alkali halide crystals. In this investigation the behaviour of bromide and chloride ions in similar solvents is discussed. It is shown that the ultraviolet absorption properties of bromide ion in water and methyl cyanide and chloride ion in methyl yanide bear a striking resemblance to the behaviour of iodide ion in these systems. In addition, the tail of the absorpand of bromide ion in other polar solvents, e.g. alcohols, ethyl cyanide etc., also exhibits a similar parallelism in behaviour with the iodide ion and this conclusion is confirmed by observations of the behaviour of the absorption spectra in mixed solvent systems. The similarity in the temperature dependence of the position of the first absorption band for iodide, bromide and chloride in methyl cyanide is noted although the contributing factors which are responsible for this apparent independence of the size of the central ion remain a matter for speculation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 31, 1962
- Accession Number
- AD0403645
Entities
People
- M. C. Symons
Organizations
- University of Leicester