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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Chemistry (CY)
In rotational spectroscopy selection rule is +,-1 so how come in o,p,Q,R ,s branches of rotation-vibration spectrum change in j for s branch is 2??
In Rotational Spectroscopy selection rule is +,-1 so how come in O,P,R,S branches of Rotation-Vibration Spectrum change in J for S branch is 2??
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Priyanshu kumar Best Answer
Diatomic gaseous molecule give Rotational -vibrational 'Raman' spectra are governed by following selection rule :- del v=+-1 and del J= 0 and +-2... then considering these selection rule O,Q and S branch are drawn... So your confusion is how del J=+-2 comes ...Because this selection rule is for Rotational vibrational Raman spectra
This selection rule is only for Pure Rotational Raman spectra of diatomic molecules i.e del J=0,+-2
then sir if I have understood rightly then it is - That selection rule for rotational quantum number J is +-1 but for rotational vibrational raman spectra it can be +-2,+-3 so on... Am I right sir??
yes here selection rule changes and one thing the physical spectroscopy this part...read it serially as all derivation are related
okay and thankyou sir