The intensity of the absorption band in the infrared spectra of magnetized water and sodium oleate solutions

1970 ◽  
Vol 13 (4) ◽  
pp. 1332-1334
Author(s):  
M. A. Orel ◽  
I. V. Kagarlitskaya ◽  
I. V. Lapatukhin ◽  
R. A. Kabirova
Keyword(s):  
Absorption Band ◽  
Sodium Oleate ◽  
Infrared Spectra ◽  
Magnetized Water

Numerical estimation of the peak positions for the 1050-1300cm-1 absorption band due to an ester group in the infrared spectra.

1997 ◽  
Vol 46 (9) ◽  
pp. 695-702 ◽  
Author(s):  
Toshio OGAWA ◽  
Kenji HAYASHI ◽  
Satoshi OSAWA ◽  
Tetsuya KOYAMA
Keyword(s):  
Absorption Band ◽  
Infrared Spectra ◽  
Ester Group ◽  
Numerical Estimation

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.

Hydrogen and minor element incorporation in synthetic rutile

2005 ◽  
Vol 69 (3) ◽  
pp. 345-358 ◽  
Author(s):  
G. D. Bromiley ◽  
N. Hilairet
Keyword(s):  
Absorption Band ◽  
Infrared Spectra ◽  
Ionic Radius ◽  
Oxygen Vacancies ◽  
Divalent Cations ◽  
Minor Element ◽  
Synthetic Rutile ◽  
Reducing Conditions ◽  
Substitutional Defects ◽  
Substitutional Impurities

AbstractThe solubility and incorporation mechanisms of H and various trivalent and divalent cations in synthetic rutile have been investigated. Experiments performed using different bulk Fe2O3contents demonstrate that Fe3+substitutes onto the main Ti site, charge-balanced by oxygen vacancies. Under more reducing conditions in Fe-poor systems, the concentration of Ti interstitials in rutile is increased, resulting in a decrease in H solubility. Variation in the solubility of different oxides in rutile as a function of ionic radius implies substitution onto the main Ti site, probably charge-balanced by oxygen vacancies. To a lesser degree, substitution of trivalent and divalent cations is locally charge-balanced by H incorporation. Variation in OH-stretching frequencies in infrared spectra as a function of composition implies that octahedral defects and structurally-incorporated H are coupled. However, in all samples, some of the H is also decoupled from substitutional impurities, as is evident from an OH-absorption band at 3279 cm–1. This band corresponds to the main OH band seen in spectra of many natural rutiles, implying that in most rutiles, H defects are decoupled from substitutional defects.

The Infrared Spectra of Some 1-(2-Thienyl)-3- and -4-Thiaalkanes

1979 ◽  
Vol 33 (6) ◽  
pp. 578-581
Author(s):  
Norman G. Foster ◽  
Bernice B. Bonner ◽  
Robert W. Higgins
Keyword(s):  
Absorption Band ◽  
Infrared Spectra ◽  
Thiophene Ring ◽  
Absorption Bands ◽  
Characteristic Absorption ◽  
Molecular Weights ◽  
Ring Compounds ◽  
Major Absorption Band

The infrared spectra of six 1-(2-thienyl)-3-thiaalkanes and seven 1-(2-thienyl)-4-thiaalkanes (molecular weights from 186 to 270) were obtained for the 4000 to 400 cm−1 range. These spectra are compared with spectra of other thiophene ring compounds substituted in the 2-position for their characteristic absorption bands. The spectra agree with other spectra as to the major absorption band around 680 cm−1 and the 2-substitution overtone pattern. A method of distinguishing between the two groups of compounds from moderate peaks in the 600 to 500 cm−1 (KBr) region is shown. Interference from the 2-alkylthiophenes and the 1-(2-thienyl)-1-thiaalkanes does not occur.

Effect of functional group conformation on the infrared spectra of some gem difunctional phenylethylene derivatives

1969 ◽  
Vol 47 (17) ◽  
pp. 3147-3152 ◽  
Author(s):  
D. J. Currie ◽  
C. E. Lough ◽  
F. K. McClusky ◽  
H. L. Holmes
Keyword(s):  
Absorption Band ◽  
Functional Groups ◽  
Infrared Spectra ◽  
Functional Group ◽  
Plane Deformation ◽  
Carbonyl Groups ◽  
Deformation Bands ◽  
Or Groups ◽  
Out Of Plane ◽  
Stretching Vibrations

Except for the benzalmalononitriles, two functional group stretching vibrations occur in the infrared (i.r.) spectra of the β,β-difunctional-styrenes with similar functional groups. For geometrically homogeneous compounds with dissimilar functional groups only one absorption band occurs for each functional group. The two bands for similar functional groups have been ascribed to S-cis- and S-trans-conformations of the carbonyl groups with respect to the ethylene and variation in the frequencies of each of these oriented carbonyls to rotation of the functional group or groups out of the plane of the ethylene by steric factors.Frequencies for ethylenic C—H out of plane deformation bands for β-monofunctional styrenes accorded with those already assigned to this vibration. A similar assignment could not be made for the difunctional analogues.

INFRARED SPECTRA OF XANTHATE COMPOUNDS: III. ORGANIC SOLVENT EFFECT ON THE C=S FREQUENCY

1961 ◽  
Vol 39 (9) ◽  
pp. 1783-1786 ◽  
Author(s):  
L. H. Little ◽  
G. W. Poling ◽  
J. Leja
Keyword(s):  
Absorption Band ◽  
Organic Solvent ◽  
Solvent Effect ◽  
Infrared Spectra ◽  
Characteristic Behavior ◽  
Band Assignment

The previously made absorption-band assignment (1) for the C=S stretching mode in xanthate-type compounds, 1020–1070 cm−1, has been confirmed by the characteristic behavior of the C=S dipole in a range of different solvents (Bellamy and Rogasch (2)).

New absorption band in the mid-infrared spectra of Cd2+-exchanged zeolites

1988 ◽  
Vol 144 (3) ◽  
pp. 286-291 ◽  
Author(s):  
X. Liu ◽  
J.K. Thomas
Keyword(s):  
Absorption Band ◽  
Infrared Spectra ◽  
Mid Infrared

Infrared spectra of 2-pyridone-16O and 2-pyridone-18O

1968 ◽  
Vol 46 (15) ◽  
pp. 2475-2479 ◽  
Author(s):  
G. H. Keller ◽  
L. Bauer ◽  
C. L. Bell
Keyword(s):  
Absorption Band ◽  
Infrared Spectrum ◽  
Infrared Spectra ◽  
Labelled Compound ◽  
High Concentrations

A comparison of the infrared spectra of natural 2-pyridone with that of the oxygen-18 labelled compound indicated modest shifts not only for the CO stretching mode (8.3−17.8 cm−1) for the various species in solution, but also for ring modes (0−13 cm−1) indicating a considerable mixing of the vibrations. The infrared spectrum of 2-pyridone at high concentrations revealed a new absorption band in chloroform solutions at 1685.0 and 1667.2 cm−1 for the unlabelled and labelled compound, respectively. In addition, absorption at 1614.9 cm−1 in the spectrum of 2-pyridone-18O in chloroform was found to be concentration dependent.

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