A Theoretical Analysis of Ir Spectroscopy |
Infrared spectroscopy was used for the structureelucidation of five new compounds isolated from the oxidation of primaquine. IRspectroscopy has shown that adsorbed water is almost completely removed fromferrihydrite by evacuation at room temperature. Absorption bands at 3615 and3430 cm-1 appearing thereafter are interpreted as arising from OHgroups located respectively at the surface and deeper in the structure. Infrared spectroscopy has been used to study thestructure of selected vanadates including pascoite, huemulite, barnesite,hewettite, metahewettite, hummerite. Pascoite, rauvite and huemulite areexamples of simple salts involving the decavanadates anion. The other mineralsnamely barnesite, hewettite, metahewettite and hummerite have similar layeredstructures to the decavanadates but are based upon (V5O14)3- units.