r
3
Π
g
-
v = 0
N
E
nvJ
, cm
-1
n
v
1
2
3
4
5
6
7
22489.55(4)
22517.93(3)
22576.61(4)
22664.8(3)
22781.49(4)
22926.01(3)
23098.12(3)
3
3
3
3
3
3
3