Vibrational Spectroscopy Flashcards
1
Q
Gross selection rule vibrational spectroscopy
A
Change in dipole moment during vibration but not necessarily a permanent dipole
2
Q
Specific selection rules vibrational spectroscopy
A
Δv = +-1, +-2, +-3 etc
3
Q
Fundamental transition vibrational spectroscopy
A
Δv = +-1
4
Q
Overtones
A
Δv = +-2, +-3 etc
5
Q
Hotband
A
V = 1 to v = 2, transitions from electronically excited state
6
Q
When do hot bands occur
A
When samples heated
7
Q
How is angular momentum conserved
A
For each vibrational transition there’s a rotational transition
8
Q
P branch
A
Δj = -1
9
Q
Where does P branch lie
A
Lower wave number
10
Q
R branch
A
Δj = +1
