Sub-Doppler Infrared Spectra of the OH-Stretch Fundamental of (13)C-Methanol.
High-resolution infrared spectra of the (13)C-methanol OH stretching band, nu(1), were obtained by slit-jet absorption spectroscopy at a rotational temperature of 12-15 K. Twenty-eight subbands were assigned within the range of upper state quantum numbers, K' = 0 to 2 and J' = 0 to 10. The upper state energy levels are heavily perturbed; about half of the assigned subbands were found to be split by perturbations with matrix elements in the range 1-3 cm(-1). The doubled lines were deperturbed and together with the "unperturbed" lines were fitted to a global torsion-rotation Hamiltonian with root-mean-square deviation of 0.41 cm(-1) to yield a torsional barrier height of approximately 405 cm(-1) in the vibrationally excited state. Copyright 2000 Academic Press.
Chirokolava
A
Department of Chemistry, University of Akron, Akron, Ohio, 44325-3601
Perry
DS
Xu
LH