TY - JOUR
T1 - Elusive sulfurous acid
T2 - Gas-phase basicity and IR signature of the protonated species
AU - Sinha, Rajeev K.
AU - Scuderi, Debora
AU - Maitre, Philippe
AU - Chiavarino, Barbara
AU - Crestoni, Maria Elisa
AU - Fornarini, Simonetta
PY - 2015/5/7
Y1 - 2015/5/7
N2 - The ion corresponding to protonated sulfurous acid, H3SO3+, has been successfully delivered into the gas phase by electrospray ionization of the solution of a suitable precursor and an in-source fragmentation process. The neutral acid is a highly elusive molecule. However, its gas-phase basicity has been ascertained by means of a kinetic study of proton-transfer reactivity. The structure of the H3SO3+ sampled ion has been probed by IRMPD spectroscopy in two complementary IR frequency ranges in conjunction with density functional theory calculations and found to conform to a trihydroxosulfonium ion. The characteristic IR signatures may aid in deciphering the presence of this species in extraterrestrial atmospheres.
AB - The ion corresponding to protonated sulfurous acid, H3SO3+, has been successfully delivered into the gas phase by electrospray ionization of the solution of a suitable precursor and an in-source fragmentation process. The neutral acid is a highly elusive molecule. However, its gas-phase basicity has been ascertained by means of a kinetic study of proton-transfer reactivity. The structure of the H3SO3+ sampled ion has been probed by IRMPD spectroscopy in two complementary IR frequency ranges in conjunction with density functional theory calculations and found to conform to a trihydroxosulfonium ion. The characteristic IR signatures may aid in deciphering the presence of this species in extraterrestrial atmospheres.
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U2 - 10.1021/acs.jpclett.5b00450
DO - 10.1021/acs.jpclett.5b00450
M3 - Article
AN - SCOPUS:84928999017
SN - 1948-7185
VL - 6
SP - 1605
EP - 1610
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 9
ER -