High-resolution infrared spectroscopy and analysis of the ν2/ν4 bending dyad and ν3 stretching fundamental of ruthenium tetroxide

Boudon, Vincent

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https://hdl.handle.net/2142/97169 Copy

Description

Title

High-resolution infrared spectroscopy and analysis of the ν2/ν4 bending dyad and ν3 stretching fundamental of ruthenium tetroxide

Author(s)

Boudon, Vincent

Contributor(s)

• Manceron, Laurent
• Doizi, Denis
• Vander Auwera, Jean
• Reymond-Laruinaz, Sébastien
• Faye, Mbaye

Issue Date

2017-06-19

Keyword(s)

Small molecules

Abstract

RuO$_4$ is a heavy tetrahedral molecule which has practical uses for several industrial fields. Due to its chemical toxicity and the radiological impact of its 103 and 106 isotopologues, the possible remote sensing of this compound in the atmosphere has renewed interest in its spectroscopic properties. We investigate here for the first time at high resolution the bending dyad region in the far IR and the line intensities in the $nu_3$ stretching region. Firstly, new high resolution FTIR spectra of the bending modes region in the far infrared have been recorded at room temperature, using a specially constructed cell and an isotopically pure sample of ${}^{102}$RuO$_4$. New assignments and effective Hamiltonian parameter fits for this main isotopologue have been performed, treating the whole $nu_2/nu_4$ bending mode dyad. We provide precise effective Hamiltonian parameters, including band centers and Coriolis interaction parameters. Secondly, we investigate the line intensities for the strongly infrared active stretching mode $nu_3$, in the mid infrared window near $10~mu$m. New high resolution FTIR spectra have also been recorded at room temperature, using the same cell and sample. Using assignments and effective Hamiltonian parameter for ${}^{102}$RuO$_4$, line intensities have been retrieved and the dipole moment parameters fitted for the $nu_3$ fundamental. A frequency and intensity line list is proposed.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/97169

DOI

https://doi.org/10.15278/isms.2017.MH03

Copyright and License Information

Copyright 2017 Vincent Boudon

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