Premium
The anomalous temperature variation of the symmetric stretching vibration ν s (H 2 O) in hexa‐aqua metal (II) hexafluorosilicate (IV)
Author(s) -
Jenkins T. E.,
Lewis J.
Publication year - 1981
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250110103
Subject(s) - laser linewidth , dephasing , chemistry , anharmonicity , hexa , metal , raman spectroscopy , vibration , molecule , atomic physics , condensed matter physics , crystallography , physics , optics , quantum mechanics , laser , organic chemistry
The anomalous temperature dependence of the linewidth of the ν s (H 2 O) symmetric stretch vibration in hexa‐aquo metal (II) hexafluorosilicate (IV) salts is discussed in terms of anharmonic interactions. It is shown that the main contribution to the linewidth is an elastic scattering process between ν s (H 2 O) and the torsional vibration of the water molecules leading to a pure vibrational dephasing. Contributions to the linewidth due to inelastic decay into other vibrational states are also discussed.