The infrared spectra of fluorides of the rare earth metals

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Journal of Structural Chemistry

DOI:https://doi.org/10.1007/BF02237517· OSTI ID:4720810

Batsanova, L. P.; Grigor'eva, G. N.; Batsanov, S. S.

Rare earth fluorides were prepared by thermal decomposition of binary ammonium salts at 600 un. Concent 85% and heated in a vacuum up to 1300 un. Concent 85% . The low-temperature specimens are isotropic or pseudoisotropic; the high-temperature ones are anisotropic. The infrared spectra of these fluorides were studied at 2 to 25 . In the case of fluoride hydrates exhibiting water absorption bands, there is a shifting and widening because of hydrogen bonds, and there is also an intensification in the 400 to 500 cm/sup -1/ region. The latter band is also present for dry fluorides and is attributed to M- F valence bond vibration. Thermal treatment does not shift the bands but lowers their intensity, which explains the decrease in the number of structural defects with annealing. (tr-auth)

• Research Organization: Inst. of Inorganic Chemistry, Academy of Sciences, USSR
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-020507
• OSTI ID: 4720810
• Journal Information: Journal of Structural Chemistry, Journal Name: Journal of Structural Chemistry Journal Issue: 1 Vol. 4; ISSN 0022-4766
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

AMMONIUM COMPOUNDS
ANISOTROPY
ANNEALING
DECONTAMINATION
DEFECTS
FLUORIDES
HEAT TREATMENTS
HEATING
HIGH TEMPERATURE
HYDROGEN
INFRARED RADIATION
LATTICES
METALS, CERAMICS, AND OTHER MATERIALS
PREPARATION
RARE EARTHS
SALTS
SPECTRA
THERMODYNAMICS
VACUUM
VIBRATIONS
WATER