THE EFFECT OF ADDED ELECTROLYTES ON THE E. S. R. AND OPTICAL ABSORPTION OF METAL -AMMONIA SOLUTIONS.
Abstract
The electron spin resonance of solutions of alkali metals in liquid ammonia was studied as a function of the concentration of metal and of added alkali metal halides. When the concentration of metal is small (< 0.01 m) there are small negative deviations in the g-factor for added chlorides and bromides but very large negative deviations for added iodides, the shifts for a given salt molality being then a function of the cation. The visible and near infrared absorption spectra of some of these solutions have been measured and the appearance of a shoulder in the 12,500/cm region was confirmed. These results are discussed in terms of a specific interaction between unpaired electrons and iodide ions. Evidence that solvated electrons are quite strongly confined to cavities in the solvent is summarised, and a simple model is suggested which links the optical properties of solvated electrons to those of F centres in alkali-halide crystals and to those of solvated halide ions. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1965
- Accession Number
- AD0627274
Entities
People
- M. C. R. Symons
Organizations
- University of Leicester