The Rotational Spectrum of H2Te |
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| Authors: | Igor N Kozin Per Jensen Oliver Polanz Stefan Klee Laurent Poteau Jean Demaison |
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| Institution: | aFachbereich 9, Theoretische Chemie, Bergische Universität–Gesamthochschule Wuppertal, D-42097, Wuppertal, Germany;bFachbereich 9, Anorganische Chemie, Bergische Universität–Gesamthochschule Wuppertal, D-42097, Wuppertal, Germany;cPhysikalisch-Chemisches Institut, Justus-Liebig-Universität, Heinrich-Buff-Ring 58, D-35392, Giessen, Germany;dLaboratoire de Spectroscopie Hertzienne, URA CNRS 249, Bâtiment P5, Université de Lille I, F-59655, Villeneuve d'Ascq, France |
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| Abstract: | In the present work, we study the spectrum of the H2Te molecule in the submillimeter-wave and far infrared region. An important aim of this investigation is the further experimental characterization of the anomalous “four-fold cluster effect” exhibited by the rotational energy levels in the vibrational ground state of H2Te. The spectrum in the region 90–472 GHz was measured with a source-modulated millimeter-wave spectrometer and that between 600 and 1600 GHz with a far-infrared sideband spectrometer. The far infrared spectrum from 30 to 360 cm−1was measured with a Bruker IFS 120 HR interferometer attached to a 3 m long cell. We have assigned 224 submillimeter-wave lines and 1695 FIR lines. These observed data were supplemented by a large number of ground state combination differences derived from rotation–vibration bands of H2Te, and the resulting large data set was analyzed by means of a modified Watson Hamiltonian. Accurate sets of rotational and centrifugal distortion constants for all eight tellurium isotopomers were obtained. |
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