This technique requires a change in dipole moment and is complementary to Raman spectroscopy.
Electronic properties of phosphine ligands can be quantified using this technique by measuring the Tolman electronic parameter. Solid samples can be easily studied using the "attenuated total reflectance" form of this technique, or they can be crushed into a nujol mull. This technique requires a change in dipole moment and is complementary to Raman spectroscopy. The region below 1500 wavenumbers in this technique is the molecule's "fingerprint," and carbonyl compounds show an absorption around 1700 wavenumbers in this technique. For 10 points, name this spectroscopic technique which investigates the vibrational modes of a molecule using wavelengths longer than those of visible light.
Electronic properties of phosphine ligands can be quantified using this technique by measuring the Tolman electronic parameter.
infrared spectroscopy [or IR spectroscopy; or IR spec]