Dominance of Raman over IR spectroscopy
What is it about?
The appearance of three sets of two bands (six bands in total) in the region of od v1 to v4 modes completely reflects the existence of three symmetrically nonequivalent AsO4 groups in the structures of vladimirite and picropharmacopite and only one set of v1 to v4 bands from the structurally equivalent AsO3OH units in the pharmacolite structure.
Why is it important?
In this case, it was found that, compared to infrared spectroscopy, Raman spectroscopy is more promising vibrational spectroscopy technique that more consistently fingerprints and elucidates the structure of the studied minerals, enabling to discriminate arsenate and hydrogen arsenate units.
The following have contributed to this page: Gligor Jovanovski
In partnership with: