ON THE STRUCTURE OF THE ADSORPTION BANDS OF THE LIQUID H$sub 2$O, D$sub 2$O AND HDO, AS DETERMINED BY THEIR MOLECULAR STRUCTURE

Journal Article · Tue Jan 01 04:00:00 EST 1957 · Optika i Spektroskopiya

OSTI ID:4333166

Bulanin, M O

The vibrational spectrum of liquid water has been studied by many people both using Raman scattering and infrared absorption. The experimental material available is, however, both contradictory and incomplete. This in particular applies to heavy (D/sub 2/O) and semi-heavy'' (HDO) water. This paper reports measurements of the infrared absorption spectra for liquid H/sub 2/O, D/sub 2/O, and HDO in the region of valence frequencies of OH and OD at 2200 to 3700 cm/sup - 1/. Recording, single-beam infrared spectrophotometers were used. They had lithium fluoride prisms. The slit was not wider than 10 cm/sup -1/ at the wavelength of 3 mu and 4 cm/sup -1/ at 3.7 mu . The absorption bands in H/sub 2/O and D/sub 2/O were recorded for layers about 2 mu thick, the HDO bands using 10 mu layers. The absorption spectra of singly, doubly and trebly distllled water were obtained. The heavy water (D/sub 2/O) contained no less than 98% of deuterium. The experiments were carried out at 19 to 21 deg C. In the case of H/ sub 2/O and D/sub 2/O the bands possess doublet structure with components at 3425, 3290, 2550, and 2435 cm/sup -1/, respectively. This structare is due to overlap of the bands of symmetrical and antisymmetrical vibrations of the H/sub 2/ O end D/sub 2/O molecules. The HDO bands have broad maxima around 3420 and 2510 cm/sup -1/. These results agee with Pople's theory. Assuming that the structural ordering in liquid water is only of a local nature and taking into account the deformation of the hydrogen bonds, Pople found a curve of radial distribution which is close to that found experimentally. (TC 0)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-12-007155
• OSTI ID: 4333166
• Journal Information: Optika i Spektroskopiya, Journal Name: Optika i Spektroskopiya Vol. Vol: 2, No. 5
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
BINDING ENERGY
CHEMISTRY
DEUTERIUM COMPOUNDS
DIAGRAMS
DISTILLATION
DISTRIBUTION
FREQUENCY
HEAVY WATER
HYPERFINE STRUCTURE
INFRARED RADIATION
LABORATORY EQUIPMENT
LAYERS
LIQUIDS
LITHIUM FLUORIDES
MEASURED VALUES
MOLECULES
OPTICAL SYSTEMS
OSCILLATIONS
PARTICLE MODELS
PHOTOMETRY
PRISMS
QUANTITATIVE ANALYSIS
RAMAN EFFECT
RECORDING SYSTEMS
SCATTERING
SPECTRA
SPECTROSCOPY
THICKNESS
VIBRATIONAL STATE
WATER