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FTIR spectroscopy cannot be used to detect all the vibration modes in a molecule. It can be used only to study the non-symmetrical vibrational state in an atom. Using Raman Spectroscopy one can study the symmetric stretch of the atom. For example the symmetric stretch of CO2 which cannot be studied by FTIR can be studied by Raman Spectroscopy. Here the permanent dipole moment of the molecule during a vibrational cycle does not change as it does not involve polarization. As a result, this mode cannot absorb infrared radiation. In many instances, vibrational modes that are not observed by infrared absorption can be studied by Raman spectroscopy as it is the result of inelastic collisions between photons and molecules

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Q: What is the difference ultraviolet and infrared spectroscopy?
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Related questions

Do ultraviolet spectroscopy and infrared spectroscopy involve electromagnetic radiation in their operation?

Yes. All light is a form of electromagnetic radiation, so this answer applies to all light spectroscopy.


What is the difference between infrared light and visible light ultraviolet light?

The difference is their wavelengths.


What has the author Peter R Griffiths written?

Peter R. Griffiths has written: 'Fourier transform infrared spectrometry' -- subject(s): Fourier transform infrared spectroscopy 'Chemical infrared Fourier transform spectroscopy' -- subject(s): Fourier transform spectroscopy, Infrared spectroscopy


Where can one find information about infrared spectroscopy?

Infrared spectroscopy applications include pharmaceutical, food quality control, elite sports training, and neonatal research. More information can be found on infrared spectroscopy on its wikipedia page.


Which has the higher frequencies ultraviolet or infrared?

Ultraviolet


What is similar about infrared and ultraviolet?

Both infrared and ultraviolet are kinds of electromagnetic radiation, as is the visible light.


Higher frequencies ultraviolet waves or infrared waves?

Ultraviolet is higher frequency, then visible light, then infrared.


Where is visible light along the EM spectrum?

Right between infrared and ultraviolet. It has higher frequencies than infrared; lower frequencies than ultraviolet.


Principle of infrared spectroscopy?

wavelenth mesured wavenoumber


What has the author Martina Havenith-Newen written?

Martina Havenith-Newen has written: 'Infrared spectroscopy of molecular clusters' -- subject(s): Intermolecular forces, Infrared spectroscopy


What are the weaknesses of infrared spectroscopy?

Infrared spectroscopy cannot be used quantitatively. The sample preparation is also complex. It may be robust as the sample preparation may affect its results.


What is the opposite of ultraviolet?

infrared