Schwingungsspektrum des hexagonalen Lanthanäthylsulfats La (C2H5SO4)3 · 9 H2O
Open Access
- 1 February 1965
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 20 (2) , 289-296
- https://doi.org/10.1515/zna-1965-0222
Abstract
Infrared reflection spectra and RAMAN-spectra of single crystals of La (C2H5SO4) 3 · 9 H2O have been studied between 400 cm-1 and 4000 cm-1 at 90°K and at 300°K, using polarized radiation. Frequencies and symmetry species of the active vibrational modes ( k =0) have been determined. The observed transitions are assigned to internal and external vibrations of the water of crystallization and to internal vibrations of the ethylsulfate ion. The orientation of the water dipoles surrounding the rare earth ion, which cannot be determined by X-ray methods, is derived from the RAMAN-spectra of the crystalline water.Keywords
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