Determine the symmetries of the vibrational modes of XeOF4 . (a) How many normal

Question

Determine the symmetries of the vibrational modes of XeOF4 .

(a)  How many normal modes of vibration are there?

(b) Which vibrational modes are IR active? How many peaks (absorptions, bands) will you see in IRspectrum of XeOF4 ?

(c) Which vibrational modes are Raman active? How many peaks (absorptions, bands)  will you see in Ramanspectrum of XeOF4.

(d)  Are there any vibrational modes, which are both IR and Raman active? (e) Determine the symmetry of the XeO stretching vibrations. Are these vibrations IRactive?

Explanation / Answer

a) Normal modes of vibrations = 3N-6

=3*6 - 6 = 15 - 6 =12 modes of vibrations

b) vibrational modes are IR active =05

c) Raman active= 07

d) no

e) C4V point group

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