Accession Number : AD0669501

Title :   RAMAN SPECTRA OF POLYCRYSTALLINE H2S AND D2S.

Descriptive Note : Technical rept.,

Corporate Author : MICHIGAN STATE UNIV EAST LANSING

Personal Author(s) : Miller,R. E. ; Leroi,G. E.

Report Date : MAY 1968

Pagination or Media Count : 28

Abstract : The Raman spectra of H2S and D2S were obtained in all three solid modifications, using both conventional and laser excitation. The spectra in the two higher temperature phases are consistent with their known disordered crystal structures. Previously undetected vibrational structure also has been obtained for both the internal and lattice vibrations in the lowest temperature phase (III); an assignment of the entire spectrum is proposed. Conclusions about the crystal structure of this phase, which has not been previously established, can be drawn from the combined results of x-ray, electron diffraction, infrared, far-infrared, and Raman investigations. It is shown that a C4h structure with 8 molecules per unit cell on C1 sites fits all the data for Phase III of H2S and D2S. (Author)

Descriptors :   (*SULFIDES, *RAMAN SPECTROSCOPY), DEUTERIUM COMPOUNDS, HYDROGEN COMPOUNDS, CRYSTALS, SOLIDIFIED GASES, MOLECULAR ENERGY LEVELS, EXCITATION, COHERENT RADIATION, CRYSTAL STRUCTURE, PHASE STUDIES

Subject Categories : Inorganic Chemistry
      Crystallography
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE