Premium
Phonon Frequencies and Dynamics of the OH − Molecule in Sodium Hydroxide
Author(s) -
Giessler A.,
Schaack G.,
Bleif H.
Publication year - 1981
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221040116
Subject(s) - orthorhombic crystal system , monoclinic crystal system , phonon , libration (molecule) , atmospheric temperature range , valence (chemistry) , raman spectroscopy , spectral line , molecule , neutron scattering , chemistry , crystallography , raman scattering , molecular dynamics , scattering , molecular physics , condensed matter physics , crystal structure , physics , optics , computational chemistry , thermodynamics , geometry , point (geometry) , mathematics , organic chemistry , astronomy
Abstract Raman and infrared reflection spectra of the fundamental lattice modes of NaOH are observed in a broad temperature range in the low‐temperature orthorhombic and in the monoclinic phase ( T ≧ 514 K). The temperature dependent wave numbers and line shapes especially of the (OH) libration and of the (OH) valence mode are determined. The results are discussed using data from X‐ray and neutron scattering experiments and are compared with the conclusions of recent theories on molecular dynamics in crystals.