High resolution Fourier transform spectrum of HDO in the 7500–8200 cm-1 region: revisited

The HDO absorption FT spectrum is recorded and analyzed in the 7500–8200 cm<f>-1</f> spectral region. The high accuracy ab initio calculation of Schwenke and Partridge was successfully applied for spectrum assignment that resulted in derivation of 508 precise rovibrational energy levels for the (3 0 0), (0 3 1), (1 1 1), (0 6 0), (2 2 0), and (0 0 2) states, with 295 of them being reported for the first time. In particular, eight new energy levels, including the band center at 7914.3170 cm<f>-1</f>, were derived for the highly excited bending (0 6 0) state from transitions borrowing their intensities through local high-order resonance coupling with the (3 0 0) and (0 3 1) states. [Copyright &y& Elsevier]