Infrared spectra of formic acid clusters in noble gas matrices

Ito, Fumiyuki

doi:10.1016/j.molstruc.2015.02.063

Cited by 20 publications

(13 citation statements)

References 51 publications

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“…IR spectroscopy of formic acid in noble gas matrices is well described in the literature. 10,11,[46][47][48][49][50][51][52][53][54][55][56] In complete agreement with the previously reported data, we observed all the fundamental absorptions of trans-HCOOH in the IR-spectra of deposited samples. The corresponding data are given in Table 1.…”

Section: Resultssupporting

confidence: 91%

Radiation-induced transformations of matrix-isolated formic acid: evidence for the HCOOH → HOCO + H channel

Ryazantsev

Feldman

2015

Phys. Chem. Chem. Phys.

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The effect of X-ray irradiation on the isolated formic acid molecules (HCOOH) in solid noble gas matrices (Xe, Kr, Ar, and Ne) at very low temperatures (6 K) was first studied by FTIR spectroscopy. Carbon oxides (CO and CO2) and hydrocarboxyl radicals (HOCO) have been detected as the principal degradation products. The formation of HOCO radicals represents a primary dissociation channel for formic acid, which was not reported previously under UV photolysis in solids. This reaction can be explained by the involvement of the recombination-induced excited states, which are not populated in photolysis. The effects of the matrix and the absorbed dose on the product formation were studied in detail and possible mechanisms are discussed with particular attention to the difference between radiolysis and UV-photolysis of the matrix-isolated formic acid. The results obtained provide a new insight into the effects of high-energy impact on the simplest carboxylic acid with possible implications to the astrochemical problems, in particular, the prebiotic evolution in the interstellar medium.

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Section: Resultssupporting

confidence: 91%

Radiation-induced transformations of matrix-isolated formic acid: evidence for the HCOOH → HOCO + H channel

Ryazantsev

Feldman

2015

Phys. Chem. Chem. Phys.

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“…The FA dimer is a prototype for double bonded cyclic complexes; it has been studied extensively [5–7]. Infrared absorption spectra of FA clusters in noble gas matrices show that FA 3 are chain-like [8], consistent with its polar character revealed in a molecular beam study utilizing an inhomogeneous electric field [9]. In the liquid bulk phase, however, X-ray and neutron diffraction indicate that FA molecules prefer to form short-branched hydrogen-bonded chains [10].…”

Section: Introductionmentioning

confidence: 99%

Electron Attachment and Electron Ionization of Formic Acid Clusters Embedded in Helium Nanodroplets

Mahmoodi-Darian

Lundberg

Zöttl

et al. 2019

J. Am. Soc. Mass Spectrom.

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We report the results of an experimental study of electron ionization of large helium nanodroplets doped with formic acid (FA). Several homologous series of cluster anions are observed, including [FA n -H] − , undissociated FA n − , and these ions complexed with one or more H 2 O. Some major features resemble those observed upon sputtering of frozen FA films but they differ significantly from results obtained by electron attachment to bare FA clusters in the gas phase. The FA n − and (H 2 O)[FA n -H] − series show abrupt onsets above n = 2 and 5, respectively. A prominent resonance in the anion yield occurs at 22.5 eV due to the formation of an intermediate He −* . Also observed are homologous series of [FA-H] − or [FA 2 -H] − complexed with helium. The cation chemistry is dominated by the production of protonated formic acid clusters, [FA n H] + , but various other homologous cluster ion series are observed as well. Graphical Abstract Electronic supplementary material The online version of this article (10.1007/s13361-018-02124-z) contains supplementary material, which is available to authorized users.

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“…265 Bei einer möglichen Zuordnung des Trimers in den Spektren können die kürzlich veröffentlichten Daten zu Ameisensäuretrimeren in Edelgasmatrizen hilfreich sein. 266 Außerdem sind in Tabelle 6.3 die Positionen zweier Signale gegeben, die sich auf Grund ihres Wachstumsverhaltens als Dimerbanden charakterisieren lassen. Sie sind in Abbildung 6.3 mit "?"…”

Section: (Hcooh)unclassified

Schwingungsdynamik in O−H···O-verbrückten Aggregaten: FTIR-Spektroskopie vom Nah- bis zum Ferninfraroten

Kollipost¹

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Infrared spectra of formic acid clusters in noble gas matrices

Cited by 20 publications

References 51 publications

Radiation-induced transformations of matrix-isolated formic acid: evidence for the HCOOH → HOCO + H channel

Radiation-induced transformations of matrix-isolated formic acid: evidence for the HCOOH → HOCO + H channel

Electron Attachment and Electron Ionization of Formic Acid Clusters Embedded in Helium Nanodroplets

Schwingungsdynamik in O−H···O-verbrückten Aggregaten: FTIR-Spektroskopie vom Nah- bis zum Ferninfraroten

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