ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Raman polarization spectra of the natural zeolite analcime

F. Pechar and D. Rykl

Institute of Geology and Geotechnics, Czechoslovak Academy of Sciences, 182 09 Prague

Abstract:  The Raman polarization spectra of monocrystal of the natural zeolite analcime were measured in the wavenumber range 50—4000 cm^-1 at labora­ tory temperature. The spectra were taken in the conventional rectangular geometry: Y(ZZ)X, Y(XZ)X, Z(YY)X, Z(XY)X, Z(XX)Y, and X(YZ)Y. The bands found in the Raman polarization spectra of monocrystal of the natural zeolite analcime may be assigned to particular vibrations and divided into three groups: 1. Optical translation vibrations of the lattice of crystal and translation-rota­ tion vibrations of water molecules (wavenumber regions 50—300 and 350—680 cm^-1 ); 2. Internal vibrations of bonds in the (Al, Si)O₄ tetrahedrons (wavenumber regions 400—490 and 900—1100 cm^-1 ); 3. Internal vibrations of bonds in water molecules (wavenumber regions 1580—1680 and 3300—3700 cm^-1). These vibrations exhibit in the measured spectra well defined bands belong­ ing to the symmetric components A_1g, E_g, F_2g which are not polarizable owing to the symmetry of crystal.

Full paper in Portable Document Format: 351a45.pdf

Chemical Papers 35 (1) 45–50 (1981)