The Born-Oppenheimer approximation is often used with this experimental technique to assume that the central atoms do not move during the experiment.
The Born-Oppenheimer approximation is often used with this experimental technique to assume that the central atoms do not move during the experiment. When using this experimental technique, fewer than the predicted number of vibration bands are typically seen because of band degeneracy and because some vibrations do not cause a change in dipole moment. When these bands are observed, they are seen in what is known as the "group frequency" region, while unique patterns are found in the region of 1450 to 600 inverse centimeters, for which reason it is known as the "fingerprint region." Employing light with a wavelength of between 4,000 and 500 inverse centimeters, for ten points, identify this spectroscopic method that employs light that is less energetic than visible light.
The Born-Oppenheimer approximation is often used with this experimental technique to assume that the central atoms do not move during the experiment.
{infrared} spectroscopy