Lines near the band origin in the high-resolution infrared spectrum of 12C16O are observed at 2131.58, 2135.50, 2139.38, 2147.04, 2150.81 and
2154.55 cm-1. Assign Jinitial and Jfinal quantum numbers to each transition
and, hence, determine the rotational constant of this molecule in both the v = 1 and the v = 0 vibrational levels. Determine the band origin.
OK so, in the P branch:
R branch: ΔE=hν0
These are the equations I've found but I'm guessing that they're not right as I don't have v0
, but I can't do the rotational constant from the line spacing because they're all different? Just need a point in the right direction, not the answer, thanks.