Fourier transform infrared (FTIR) absorption spectra in the 2000 to 3500 cm-1 range are reported for the gaseous 16O,16O- and 18O,18O- isotopomers of tropolone[OH(OD)] at 25oC. The spectral doublet component separations are near 20 and 19 cm-1 for 16O,16O- and 18O,18O-Tp(OH), respectively, and near 7 and 6.5 cm-1 for 16O,16O- and 18O,18O-Tp(OD). The spectra suggest the tautomerization tunneling mechanisms in these states are complex multidimensional processes including the participation of IVR. In general, the OHO isotope effects demonstrate a mixing of O atom displacement coordinates into the intramolecular dynamics for most of the vibrational states observed in the fundamental CH/OH(OD) stretching regions.
Revised: April 7, 2011 |
Published: October 1, 2008
Citation
Redington R.L., T.E. Redington, and R.L. Sams. 2008.Infrared Absorption Spectra in the Hydroxyl Stretching Regions of Gaseous Tropolone OHO Isotopomers.Zeitschrift fur Physikalische Chemie--International Journal of Research in Physical Chemistry and Chemical Physics 222, no. 8-9:1197-1211.PNNL-SA-59761.doi:10.1524/zpch.2008.5383