scholarly journals High Resolution Spectroscopy of CF3Br by Diode Laser in the Frequency Range 1070–1090 cm−1

1988 ◽  
Vol 8 (1) ◽  
pp. 61-78 ◽  
Author(s):  
R. de Bekker ◽  
M. Ebben ◽  
M. Snels ◽  
S. Stolte
Keyword(s):  
High Resolution ◽  
Diode Laser ◽  
Absorption Spectra ◽  
High Resolution Spectroscopy ◽  
Ir Absorption ◽  
Spectral Features ◽  
Frequency Range ◽  
Molecular Constants ◽  
Ir Absorption Spectra ◽  
Better Than

The IR absorption spectra of gaseous CF3Br expanded in a molecular jet have been recorded with a linewidth of about 0.002 cm−1. The rotational K-structure of the ν1 fundamental has been resolved and the molecular constants ΔB and ΔA have been determined with an accuracy better than 5 x 10−6 cm−1. Spectral features belonging to the ν6- and ν3-hotbands have been identified. For CF3B79r (CF3B81r) improved values of the vibrational origins for the fundamental ν1 = 1084.768(2) cm−1 (1084.520(2) cm−1) and for its hotbands ν3+ν1←ν3 = 1081.709(80) cm−1 (1081.065(40) cm−1) and ν6+ν1←ν6 = 1083.533(4) cm-1 (1083.288(4) cm-1) have been determined.

Near-IR Absorption Spectra for the Buckminsterfullerene Anions: An Experimental and Theoretical Study

1992 ◽  
Author(s):  
Del R. Lawson ◽  
Daniel L. Feldheim ◽  
Colby A. Foss ◽  
Peter K. Dorhoug ◽  
C. M. Elliott
Keyword(s):  
Absorption Spectra ◽  
Theoretical Study ◽  
Ir Absorption ◽  
Near Ir ◽  
Ir Absorption Spectra

Study of the Infrared Absorption Spectra of Some Pyridine Derivatives-Iodine Complexes

1976 ◽  
Vol 30 (2) ◽  
pp. 200-204 ◽  
Author(s):  
F. M. Abdel Kerim ◽  
F. Abou El Fotouh
Keyword(s):  
Complex Formation ◽  
Absorption Spectra ◽  
Infrared Absorption ◽  
Ir Absorption ◽  
Pyridine Derivatives ◽  
Thermodynamic Constants ◽  
Ir Absorption Spectra ◽  
Infrared Absorption Spectra ◽  
The Stability ◽  
Iodine Complexes

The ir absorption spectra of some pyridine derivatives-iodine complexes were measured in the region 400 to 1400 cm−1 and the results are discussed. The effect of complex formation on the intensities of some of the bands was investigated. The thermodynamic constants of these complexes were calculated. It was found that the stability of the complex depends to a large extent on the electronegativity as well as the position of the substituent on the pyridine nucleus. The structures of formed complexes are discussed.

scholarly journals Влияние концентрации примеси магния на электрические свойства кристаллов LiNbO-=SUB=-3-=/SUB=-

2021 ◽  
Vol 63 (10) ◽  
pp. 1566
Author(s):  
А.В. Яценко ◽  
С.В. Евдокимов ◽  
В.Ф. Шульгин ◽  
М.Н. Палатников ◽  
Н.В. Сидоров ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Absorption Spectra ◽  
Impurity Content ◽  
Threshold Value ◽  
Ir Absorption ◽  
Temperature Range ◽  
Polar Direction ◽  
Ir Absorption Spectra ◽  
Mg Content

Using the results of studying the electrical conductivity in the temperature range of ~ 295-460 K and the IR absorption spectra of a series of LiNbO3: Mg crystals, it is shown that as the Mg content in the sample increases, the mobility of H+ ions sharply decreases when moving along the polar direction. This effect is most clearly manifested in the samples of LiNbO3: Mg crystals with a high (above threshold value) impurity content.

IR absorption spectra of 1-aryl-3-pyrazolidones

1970 ◽  
Vol 6 (12) ◽  
pp. 1568-1571 ◽  
Author(s):  
B. E. Zaitsev ◽  
N. A. Andronova ◽  
R. B. Zhurin ◽  
L. B. Preobrazhenskaya
Keyword(s):  
Absorption Spectra ◽  
Ir Absorption ◽  
Ir Absorption Spectra
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