Spectroscopy Flashcards
1
Q
What is necessary for a molecular vibrational spectrum
A
A change in dipole moment
2
Q
Allowed rotational energy levels
A
Ej = hBJ(J+1)
3
Q
Moment of inertia equation
A
I = muR^2
where R is bond length
4
Q
rotational constant equation
A
B = h/8pi^2I
5
Q
units of the rotational constant B
A
s-1 = Hz
6
Q
Units of Ej
A
J
7
Q
R and P branch lines
A
R branch = J +1 transition
P branch = J -1 transition
8
Q
Energy of combined vibrational and rotational transitions
A
The sum of the energy of both independent transitions. from v1 to v2 and from J1 to J2
