The fundamental and overtones up to v = 6 of the v3 mode of N216O and N218O have been studied. The positions of the v3 overtones can be fit by a two-parameter model since there is very limited interaction with other molecular vibrations. Vibrational self-consistent field and configuration interaction calculations and isotopic shift data show that the N-N stretching overtone is best described as a normal mode. Both N216O and N218O display line widths for the R branch of the v = 6 overtone of less than 2 cm-1.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry