Accession Number:

ADA214920

Title:

Raman Study of Solid State Reactions

Descriptive Note:

Final rept. 1 Sep 1978-31 Aug 1979

Corporate Author:

STATE UNIV OF NEW YORK AT BUFFALO DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1979-08-31

Pagination or Media Count:

10.0

Abstract:

A considerable amount of work was done towards understanding the nature of reactions in solids. The first step in the investigation of the solid state reactions was the synthesis and the characterization of the materials. Methyl-p-dimethylaminobenzenesulfonate, p-trimethylammoniumbenzene sulfonate, tri-o-thymotide were synthesized and characterized by the Raman spectra. Other compounds proposed for study were, trans-cinnamic acid and p-nitrophenol, the phonon spectra and the internal vibration spectra of which in two crystalline modifications were studied. Another matrix which we proposed for study was cyclodextrin whose Raman spectra were also studied. Solid state photodimerization of two modifications of trans-cinnamic acids in pure crystals was investigated. The Raman spectra of both the phonon region and the internal vibration region were studied as a function of photodimerization. The Raman spectra was shown in phonon region of the trans-cinnamic acids and their respective dimers. This photodimerization investigated using the phonon spectra, the mechanism of the product lattice formation, i.e. whether the reaction proceeds by a homogeneous mechanism with the formation of a solid solution between the reactant the product or by a heterogeneous reaction where the product forms its own lattice. jhd

Subject Categories:

  • Physical Chemistry
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE