Journal Article
Zeitschrift für Physikalische Chemie, vol. 222, iss. 8-9, pp. 1197-1211, 2009
Authors
Richard L. Redington, Theresa E. Redington, Robert L. Sams
Abstract
Abstract
Fourier transform infrared (FTIR) absorption spectra in the 2000 to 3500 cm–1 range are reported for the gaseous 16
O,
16
O- and 18
O,
18
O-isotopomers of tropolone[OH(OD)] at 25 oC. The spectral doublet component separations are near 20 and 19 cm–1 for 16
O,
16
O- and 18
O,
18
O-Tp(OH), respectively, and near 7 and 6.5 cm–1 for 16
O,
16
O- and 18
O,
18
O-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.
