Vibrational Raman Spectroscopy

Question 1

Physical mechanism of vibrational Raman

Answer 1

Change in polarisability that occurs during course of vibration

Question 2

Are diatomics active (vibrational Raman)

Answer 2

Yes

Question 3

Gross selection rules vibrational Raman

Answer 3

Polarisability must change as molecule vibrates, almost all molecules are active but not all modes are

Question 4

Specific selection rules vibrational Raman

Answer 4

Δj = +-1, +-2 etc

Question 5

Stokes band vibrational Raman

Answer 5

Δv = +1

Question 6

Antistokes band vibrational raman

Answer 6

Δv = -1