Raman Study of Solid State Reactions
Abstract
The mechanisms and the reaction dynamics of several solid state reactions were investigated. The thermal rearrangement reaction of methyl-p-dimethylaminobenzene sulfonate (MSE) in pure crystal to form the product p-trimethylammonium benzene sulfonate Zwitterion (ZWT) was investigated during this period. Detailed studies of the phonon spectra as well as the internal vibration spectra were made as a function of the percentage rearrangement using polycrystalline samples as well as single crystals in different orientations. Solid state photodimerization of two modifications of trans-cinnamic acids in pure crystal was investigated. Also, the topotactic transformation reaction of iodobenzoyl peroxide was investigated. This reaction is thermally enhanced and yields a number of products. An important aspect of a dynamical model is to determine specificity in phonon induction of solid state reactions. In order that a large population of selective and coherent vibrational excitation can be achieved to study its effect on reactivity it is necessary that vibrational relaxation be slow. The dephasing of a localized internal vibration of the naphtalene crystal was investigated by studying the temperature dependence of the line width, the line shape and the line frequency.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 1980
- Accession Number
- ADA207140
Entities
People
- Paras Nath Prasad
Organizations
- University at Buffalo