Raman spectra of chalcogen chains isolated in zeolite matrixes
- 30 April 1985
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 18 (12) , L313-L317
- https://doi.org/10.1088/0022-3719/18/12/003
Abstract
Raman spectra are reported for single Se and Te chains stabilised in the regular system of parallel channels of a mordenite dielectric matrix. The symmetric bond-stretching mode frequency is determined for Se chains (260 cm-1) and for Te chains (164 cm-1). The distinct bond-bending mode bands associated with ring-like and chain-like fragments and the Fermi resonance structure are found in the Se chain spectrum. A comparison of the spectra of chains with those of bulk materials is made. It is shown that the interchain interaction in trigonal Se and Te crystals weakens significantly the intrachain bonding. Confirmation is given for the amorphous Se and Te models that are based on slightly interacting chains with varying signs and magnitudes of dihedral angles.Keywords
This publication has 9 references indexed in Scilit:
- The absorption spectra of single selenium and tellurium chains in dielectric matrix channelsSolid State Communications, 1983
- Vibrational spectra of disordered chains and the structure of amorphous Se and TePhilosophical Magazine, 1976
- A new model for the structure of amorphous seleniumPhilosophical Magazine, 1976
- Intermolecular bonding and lattice dynamics of Se and TePhysical Review B, 1976
- Lattice dynamics of trigonal selenium. II. Model theoriesJournal of Physics C: Solid State Physics, 1975
- Vibrational Assignment and Force Constants of Cyclo Octaselenium, Se8, and of the Cyclo Tetraselenium(2+) Cation, Se4 2+Zeitschrift für Naturforschung A, 1975
- Hydrostatic Pressure Dependence of First‐Order Raman Frequencies in Se and TePhysica Status Solidi (b), 1973
- A comparison of the long wave optical phonons in trigonal Se and trigonal TePhysica Status Solidi (b), 1972
- The Measurement of the Energy Gap of Semiconductors from their Diffuse Reflection SpectraProceedings of the Physical Society. Section B, 1956