TY - JOUR
T1 - Protonated sulfuric acid
T2 - Vibrational signatures of the naked ion in the near- and Mid-IR
AU - Sinha, Rajeev K.
AU - Chiavarino, Barbara
AU - Fornarini, Simonetta
AU - Lemaire, Joel
AU - Maitre, Philippe
AU - Crestoni, Maria Elisa
PY - 2010/6/3
Y1 - 2010/6/3
N2 - The species formally obtained from the protonation of sulfuric acid is examined as a naked ion in the gas phase, and its IR spectral features are reported. The major fundamental vibrational bands have been acquired in both the 700-1700 and the 3400-3800 cm-1 spectral ranges using state of the art equipment at the CLIO facility, namely, FT-ICR mass spectrometry coupled to the tunable IR beam of either a free electron laser or a tabletop optical parametric oscillator/amplifier (OPO/OPA) laser source. In this way, the structural features of the sampled ion could be ascertained and found to conform to the most stable isomer on the [H3,S,O4]+ potential energy surface. The experimental IR multiple photon dissociation (IRMPD) spectrum is in fact consistent with the IR spectrum calculated for the trihydroxyoxosulfonium cation OS(OH)3+, providing a conclusive structural probe.
AB - The species formally obtained from the protonation of sulfuric acid is examined as a naked ion in the gas phase, and its IR spectral features are reported. The major fundamental vibrational bands have been acquired in both the 700-1700 and the 3400-3800 cm-1 spectral ranges using state of the art equipment at the CLIO facility, namely, FT-ICR mass spectrometry coupled to the tunable IR beam of either a free electron laser or a tabletop optical parametric oscillator/amplifier (OPO/OPA) laser source. In this way, the structural features of the sampled ion could be ascertained and found to conform to the most stable isomer on the [H3,S,O4]+ potential energy surface. The experimental IR multiple photon dissociation (IRMPD) spectrum is in fact consistent with the IR spectrum calculated for the trihydroxyoxosulfonium cation OS(OH)3+, providing a conclusive structural probe.
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U2 - 10.1021/jz100458q
DO - 10.1021/jz100458q
M3 - Article
AN - SCOPUS:77953202429
SN - 1948-7185
VL - 1
SP - 1721
EP - 1724
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 11
ER -