r
3
Π
g
+
v = 0
N
E
nvJ
, cm
-1
n
v
2
3
4
5
6
7
22603.44(3)
22693.53(3)
22810.9(3)
22955.91(3)
23128.28(3)
23327.57(3)
4
4
3
4
3
3