Preparing a sample for this process often involves an oil called Nujol or creating a pellet out of potassium bromide, and part of the spectrum produced by this process is called the fingerprint region.
In one variation of this technique, a beam is directed toward a dense crystal in contact with the analyte, producing an evanescent wave that is absorbed by the analyte. That variant of this process does not require any sample prep and is known as attenuated total reflectance. A molecule can be analyzed using this technique if changes to the direction or magnitude of its bond length causes a change in its dipole moment. Preparing a sample for this process often involves an oil called Nujol or creating a pellet out of potassium bromide, and part of the spectrum produced by this process is called the fingerprint region. This technique analyzes movements known as rocking, wagging, or scissoring and typically involves light from 4000-400 inverse centimeters. For 10 points, name this form of spectroscopy which as its name suggests involves light with a slightly longer wavelength than visible light.
In one variation of this technique, a beam is directed toward a dense crystal in contact with the analyte, producing an evanescent wave that is absorbed by the analyte.
infrared spectroscopy [or IR spectroscopy]