title: The Coriolis-Coupled States v(6) = 1 and v(8) = 1 of DCOOH.
abstract: The Fourier transform gas-phase infrared spectra of the Coriolis-perturbed nu(6) and nu(8) bands of deuterated formic acid DCOOH were measured with a resolution of ca. 0.003 cm(-1). Combined analysis of the 8977 IR transitions and all the available rotational data (from literature) in the ground state, as well as in the excited vibrational states v(6) = 1 and v(8) = 1 was carried out. The Coriolis coupling terms were determined and improved sets of rotational and centrifugal distortion parameters for the ground and excited vibrational states were obtained. The determined band centers are nu(0) (nu(8)) = 873.385046(12) cm(-1) and nu(0) (nu(6)) = 970.8889551(46) cm(-1). Copyright 1999 Academic Press.
authors.affiliation: Faculty of Quantum Radiophysics, Kharkov State University, Svobody Sq. 4, Kharkov, 310077, Ukraine
authors.initials: OI
authors.lastname: Baskakov
authors.initials: S
authors.lastname: Alanko
authors.initials: M
authors.lastname: Koivusaari