scholarly journals ON THE INFRARED ABSORPTION OF WATER AND HEAVY WATER IN CONDENSED STATES

1956 ◽  
Vol 34 (6) ◽  
pp. 798-808 ◽  
Author(s):  
Paul A. Giguère ◽  
K. B. Harvey
Keyword(s):  
Thin Films ◽  
Absorption Band ◽  
Water Molecule ◽  
Air Temperature ◽  
Heavy Water ◽  
Infrared Spectra ◽  
Infrared Absorption ◽  
Silver Chloride ◽  
Strong Absorption Band ◽  
Librational Mode

The infrared spectra (from 2 to 30 μ) of thin films of H2O and D2O were measured at various temperatures between 20 ° and −180 °C. A strong absorption band due to the librational mode of the water molecule has its maximum around 710 cm.−1 in the liquid. In ice it is shifted to 800 cm.−1 at −15 °C. and 850 cm.−1 at −170 °C. The corresponding D2O bands show the normal isotope shift. Thin films of water pressed between silver chloride plates could not be crystallized even at liquid air temperature as confirmed by their spectra, which were almost identical with those of the liquid.

INFRARED SPECTRUM OF THE H3O+ ION IN AQUEOUS SOLUTIONS

1957 ◽  
Vol 35 (10) ◽  
pp. 1195-1204 ◽  
Author(s):  
Michael Falk ◽  
Paul A. Giguère
Keyword(s):  
Infrared Spectrum ◽  
Aqueous Solutions ◽  
Air Temperature ◽  
Heavy Water ◽  
Infrared Spectra ◽  
Average Life ◽  
Hydronium Ions ◽  
Ion Cooling ◽  
Mineral Acids ◽  
Strong Acids

The absorption spectra at 25 °C. of aqueous solutions of mineral acids (HCl, HBr, HNO3, HClO4, H2SO4, H3PO4) and of some of their acid salts in various concentrations were measured in the infrared from 2 to 25 µ. In all cases three broad bands were present at 1205, 1750, and 2900 cm.−1 arising from the H3O+ ion. Cooling the samples, and even supercooling them down to liquid air temperature, produced no major changes in the spectra. The bands of the D3O+ ion were also found at 960, 1400, and 2170 cm.−1 in solutions of DCl in heavy water. Thus, the existence of discrete hydronium ions in the liquid state, with average life longer than 10−13 second, is confirmed. Infrared spectra provide a means of estimating the extent of ionization of strong acids in solution.

An Infrared Absorption Band of Heavy Water Vapor

1936 ◽  
Vol 49 (3) ◽  
pp. 272-272 ◽  
Author(s):  
W. V. Norris ◽  
H. J. Unger ◽  
R. E. Holmquist
Keyword(s):  
Water Vapor ◽  
Absorption Band ◽  
Heavy Water ◽  
Infrared Absorption ◽  
Infrared Absorption Band

Infrared absorption of Ir and IrSi thin films on Si substrates

1989 ◽  
Vol 54 (4) ◽  
pp. 310-312 ◽  
Author(s):  
C. K. Chen ◽  
B‐Y. Tsaur ◽  
M. C. Finn
Keyword(s):  
Thin Films ◽  
Infrared Absorption ◽  
Si Substrates

Pyrrole Studies. I. The Infrared Spectra of 2-Monosubstituted Pyrroles

1963 ◽  
Vol 16 (1) ◽  
pp. 93 ◽  
Author(s):  
RA Jones
Keyword(s):  
Infrared Spectra ◽  
Infrared Absorption ◽  
Absorption Bands ◽  
Infrared Absorption Bands

The positions and intensities of the characteristic infrared absorption bands of the nucleus are recorded and discussed for thirty-five 2-monosubstituted pyrroles.

Transport properties and infrared spectra of CuCl thin films

1990 ◽  
Vol 67 (6) ◽  
pp. 3097-3101
Author(s):  
Madhavi Z. Martin ◽  
David K. Shuh ◽  
R. Stanley Williams ◽  
Robert M. Ostrom
Keyword(s):  
Thin Films ◽  
Transport Properties ◽  
Infrared Spectra

scholarly journals Evidence for a 12 Micron Water-ice Absorption Band in the IRAS LRS Spectra of Protostars and Late type Stars

1987 ◽  
Vol 120 ◽  
pp. 343-343
Author(s):  
M. de Muizon ◽  
L.B. d'Hendecourt ◽  
C. Perrier
Keyword(s):  
Absorption Band ◽  
Physical Characteristics ◽  
Late Type ◽  
Present Evidence ◽  
Water Ice ◽  
Librational Mode

We present evidence for a 12 micron absorption band due to the librational mode of the H2O molecule in the form of ice in some IRAS LRS spectra. This identification is based on the 3 micron spectrophotometry of these objects showing the presence of the 3 micron ice band. From these spectra, physical characteristics of the ice can be discussed.

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