Die FIR-Spektren gemischter Hexahalogeno-Osmate (IV) vom OsCl6-nXn-Typ (X = Br,I) und ihre Normalkoordinatenanalyse |
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| Affiliation: | 1. Laboratory of Theoretical Spectroscopy, V.E. Zuev Institute of Atmospheric Optics, SB RAS, 1 Akademician Zuev Sq., Tomsk 634055, Russia;2. Laboratory of Quantum Mechanics of Molecules and Radiative Processes, Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia;3. Department of Physics, University of Central Florida, Florida, USA;1. Laboratory of Theoretical Spectroscopy, V.E. Zuev Institute of Atmospheric Optics SB RAS 1, Akademician Zuev Sq., Tomsk 634055, Russia;2. Tomsk State University 36, Lenin Ave., Tomsk 634050, Russia;3. Groupe de Spectrométrie Moléculaire et Atmosphérique UMR CNRS 7331, UFR Sciences BP 1039, 51687 Reims Cedex 2, France;1. Laboratory of Theoretical Spectroscopy, V.E. Zuev Institute of Atmospheric Optics, SB RAS, 1, Academician Zuev square, 634021 Tomsk, Russia;2. Univ. Grenoble Alpes, CNRS, LIPhy, 38000 Grenoble, France;3. Groupe de Spectrométrie Moléculaire et Atmosphérique, UMR CNRS 7331, Université de Reims, U.F.R. Sciences, B.P. 1039, 51687 Reims Cedex 2, France;4. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA |
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| Abstract: | The far infrared (FIR) spectra of [OsCl5I]2−, cis-[OsCl4I2]2−, fac-[OsCl3I3]2−, [OsCl5Br]2− and cis-[OsCl4Br2]2− (Cs-salts) have been recorded at temperatures down to 35 K. The measured band peaks are assigned to symmetry levels using group theory arguments and normal coordinate analyses starting from corresponding octahedral OsX2−6 compounds. In general, OsX bonding properties can be transferred from one compound to another except for XOsY axes where distinct trans-effects are operative. Normal coordinates are also able to explain weak oscillator strengths when predicting small changes of transition dipole moments. |
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