LED-based Fourier transform spectroscopy of 16O12C18O and 12C18O2 in the 11,260–11,430 cm−1 range

A Spectroscopic Description of Asymmetric Isotopologues of CO2

“…This expression turns out to be similar to the Morse case (43) and, consequently, we may propose a similar expression to (45) (63) where i and j correspond to the ith and jth isotopologues. Taking again N j = N as the number of bosons associated with the principal isotopologue, we have…”

“…Beyond the unquestionable importance of the CO 2 molecule in the chemistry of the Earth’s environment, this molecule is also significant because it has been detected in the atmosphere of other planets as well as in the exterior space and it is used as a tracer of the evolution of stars. − Human industrial activity is responsible for the alarming increase of this greenhouse gas, the atmospheric CO 2 being the central contribution in global warming. − This fact together with the advances in spectroscopic techniques has led to a large augmentation of experimental analysis with the purpose of establishing complete and accurate characterization of CO 2 and its isotopologues. − In spite of the great amount of ongoing experimental spectroscopic information on the isotopologues of CO 2 , for some of them, very few experimental vibrational energies have been reported, in particular for (838), (737), and (738) (in simplified notation, 17 O 13 C 18 O → (738), for instance). Given the profuse spectroscopic data, theoretical models can be tested in different fronts.…”