scholarly journals Vibration-Rotation Spectra, the Coriolis Coupling Constants and the Intramolecular Fore Field of Symmetric Top Molecules. II. Analysis of the Overtones and Combination Tones of Methyl Bromide

1965 ◽  
Vol 38 (3) ◽  
pp. 459-468 ◽  
Author(s):  
Yonezo Morino ◽  
Junko Nakamura ◽  
Seiya Yamamoto
Keyword(s):  
Methyl Bromide ◽  
Coupling Constants ◽  
Coriolis Coupling ◽  
Vibration Rotation ◽  
Symmetric Top Molecules

Vibration-rotation bands of trideuteromethyl iodide

1965 ◽  
Vol 288 (1412) ◽  
pp. 39-49 ◽  
Keyword(s):  
Fine Structure ◽  
Coupling Constants ◽  
Coriolis Coupling ◽  
Molecular Constants ◽  
Rotational Constants ◽  
Vibrational Levels ◽  
Theoretical Predictions ◽  
Vibration Rotation ◽  
Combination Bands

The rotational fine structure of six parallel and nine perpendicular vibration bands of tri­deuteromethyl iodide has been analysed, and molecular constants have been derived. These include the band origins, the rotational constants in different vibrational levels, the α A i and α B i values, and the Coriolis coupling constants ς i for the fundamental degenerate vibrations. The ς values for overtone and combination bands have been compared with values calculated from the ς i values of the fundamentals, and agree closely with previous theoretical predictions.

Vibration-rotation bands and molecular constants of methyl iodide

1965 ◽  
Vol 288 (1412) ◽  
pp. 50-59 ◽  
Keyword(s):  
Methyl Iodide ◽  
Coupling Constants ◽  
Rotational Line ◽  
Coriolis Coupling ◽  
Molecular Constants ◽  
Isotopic Species ◽  
Vibration Rotation ◽  
Product Rules ◽  
Degenerate Modes ◽  
Combination Bands

The rotational line structure of seven parallel and seven perpendicular vibration bands of methyl iodide has been measured with high resolution, and the molecular rotational constants have been determined. Values of a x and a x and the Coriolis coupling constants for the fundamental degenerate modes have been determined. The values for overtone and combination bands usually agree closely with those predicted from the values found for the fundamentals. There appear to be inexplicable perturbations in some of the perpendicular bands. The ratio of A values, an d frequency product rules, for the isotopic species CH 3 I and CD 3 I are in accordance with theory.

Sign in / Sign up

Export Citation Format

Share Document