Abstract
High-resolution Fourier transform spectra of a natural sample of hydrogen telluride and of monoisotopic H2130Te have been recorded in the 3.2–4–0 μm spectral region where the 3ν2, ν1+ ν2, and ν2+ ν3bands of this molecule absorb. The (030) rotational levels were least-squares fitted using a Watson-type Hamiltonian whereas it proved necessary to consider the strong Coriolis interaction coupling the (110) and the (011) rotational levels. In this way all the experimental levels were calculated to within their experimental uncertainty and precise sets of vibrational energies and rotational and coupling constants were obtained for the (030), (110), and (011) vibrational states of H2130Te, H2128Te, H2126Te, H2125Te, H2124Te, H2123Te, and H2122Te. The band centers for the most abundant isotopic species, namely H2130Te, are:νo(3ν2) = 2565.4428, νo(ν1+ ν2) = 2911.4098, νo(ν2+ ν3) = 2915.9599 cm−1
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