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Salazar Gómez JI, Sojka M, Klucken C, Schlögl R, Ruland H. Determination of trace compounds and artifacts in nitrogen background measurements by proton transfer reaction time-of-flight mass spectrometry under dry and humid conditions. JOURNAL OF MASS SPECTROMETRY : JMS 2021; 56:e4777. [PMID: 34291848 DOI: 10.1002/jms.4777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
A qualitative analysis was applied for the determination of trace compounds at the parts per trillion in volume (pptv ) level in the mass spectra of nitrogen of different qualities (5.0 and 6.0) under dry and humid conditions. This qualitative analysis enabled the classification and discovery of hundreds of new ions (e.g., [Sx ]H+ species) and artifacts such as parasitic ions and memory effects and their differentiation from real gas impurities. With this analysis, the humidity dependency of all kind of ions in the mass spectrum was determined. Apart from the inorganic artifacts previously discovered, many new organic ions were assigned as instrumental artifacts and new isobaric interferences could be elucidated. From 1140 peaks found in the mass range m/z 0-800, only 660 could be analyzed due to sufficient intensity, from which 463 corresponded to compounds. The number of peaks in nitrogen proton transfer reaction (PTR) spectra was similarly dominated by nonmetallic oxygenated organic compounds (23.5%) and hydrocarbons (24.1%) Regarding only gas impurities, hydrocarbons were the main compound class (50.2%). The highest contribution to the total ion signal for unfiltered nitrogen under dry and humid conditions was from nonmetallic oxygenated compounds. Under dry conditions, nitrogen-containing compounds exhibit the second highest contribution of 89% and 96% for nitrogen 5.0 and 6.0, respectively, whereas under humid conditions, hydrocarbons become the second dominant group with 69% and 86% for nitrogen 5.0 and 6.0, respectively. With the gathered information, a database can be built as a tool for the elucidation of instrumental and intrinsic gas matrix artifacts in PTR mass spectra and, especially in cases, where dilution with inert gases plays a significant role.
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Affiliation(s)
- Jorge Iván Salazar Gómez
- Department of Heterogeneous Reactions, Max Planck Institute for Chemical Energy Conversion, Mülheim a.d. Ruhr, Germany
| | - Martha Sojka
- Department of Heterogeneous Reactions, Max Planck Institute for Chemical Energy Conversion, Mülheim a.d. Ruhr, Germany
| | - Christian Klucken
- Department of Heterogeneous Reactions, Max Planck Institute for Chemical Energy Conversion, Mülheim a.d. Ruhr, Germany
| | - Robert Schlögl
- Department of Heterogeneous Reactions, Max Planck Institute for Chemical Energy Conversion, Mülheim a.d. Ruhr, Germany
- Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Berlin, Germany
| | - Holger Ruland
- Department of Heterogeneous Reactions, Max Planck Institute for Chemical Energy Conversion, Mülheim a.d. Ruhr, Germany
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Lesniak L, Salas J, Burner J, Diedhiou M, Burgos Paci MA, Bodi A, Mayer PM. Trifluoroacetic Acid and Trifluoroacetic Anhydride Radical Cations Dissociate near the Ionization Limit. J Phys Chem A 2019; 123:6313-6318. [DOI: 10.1021/acs.jpca.9b04883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lukas Lesniak
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
| | - Juana Salas
- INFIQC − CONICET, Departamento Fisicoquimica, Universidad Nacional de Córdoba, Cordoba 5000, Argentina
| | - Jake Burner
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
| | - Malick Diedhiou
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
| | - Maxi A Burgos Paci
- INFIQC − CONICET, Departamento Fisicoquimica, Universidad Nacional de Córdoba, Cordoba 5000, Argentina
| | - Andras Bodi
- Paul Scherrer Institute, Villigen, 5232 Switzerland
| | - Paul M Mayer
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa K1N 6N5, Canada
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Baer T, Tuckett RP. Advances in threshold photoelectron spectroscopy (TPES) and threshold photoelectron photoion coincidence (TPEPICO). Phys Chem Chem Phys 2017; 19:9698-9723. [DOI: 10.1039/c7cp00144d] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The history and evolution of molecular threshold photoelectron spectroscopy and threshold photoelectron photoion coincidence spectroscopy (TPEPICO) over the last fifty years are reviewed.
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Affiliation(s)
- Tomas Baer
- Chemistry Department
- University of North Carolina
- Chapel Hill
- USA
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Das P, Tsuge M, Lee YP. Infrared absorption of t-HOCO+, H+(CO2)2, and HCO2− produced in electron bombardment of CO2 in solid para-H2. J Chem Phys 2016; 145:014306. [DOI: 10.1063/1.4954898] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Prasanta Das
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Masashi Tsuge
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Yuan-Pern Lee
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
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Bodi A, Baer T, Wells NK, Fakhoury D, Klecyngier D, Kercher JP. Controlling tunnelling in methane loss from acetone ions by deuteration. Phys Chem Chem Phys 2015; 17:28505-9. [DOI: 10.1039/c5cp02944a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Methane loss is predominantly a result of quantum tunnelling in acetone cations, and it can be suppressed quantitatively by deuteration.
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Affiliation(s)
- Andras Bodi
- Molecular Dynamics Group
- Paul Scherrer Institute
- Villigen 5232
- Switzerland
| | - Tomas Baer
- Department of Chemistry
- University of North Carolina
- Chapel Hill
- USA
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Wang C, Wang B, Okunishi M, Roeterdink W, Ding D, Zhu R, Prümper G, Shimada K, Ueda K. Ion–ion coincidence imaging of dissociative ionization dynamics of formic acid in intense laser fields. Chem Phys 2014. [DOI: 10.1016/j.chemphys.2013.12.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Tang X, Zhou X, Sun Z, Liu S, Liu F, Sheng L, Yan B. Dissociation of internal energy-selected methyl bromide ion revealed from threshold photoelectron-photoion coincidence velocity imaging. J Chem Phys 2014; 140:044312. [DOI: 10.1063/1.4862686] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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8
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Bodi A, Hemberger P. Imaging breakdown diagrams for bromobutyne isomers with photoelectron–photoion coincidence. Phys Chem Chem Phys 2014; 16:505-15. [DOI: 10.1039/c3cp53212g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Bodi A. Internal energy selection in vacuum ultraviolet photoionization of ethanol and ethanol dimers. J Chem Phys 2013; 139:144306. [DOI: 10.1063/1.4824135] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bell DM, Anderson SL. Effects of collisional and vibrational velocity on proton and deuteron transfer in the reaction of HOD+ with CO. J Phys Chem A 2013; 117:1083-93. [PMID: 22788802 DOI: 10.1021/jp304208q] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reaction of HOD(+) with CO was studied over the collision energy (E(col)) range between 0.18 and 2.87 eV, for HOD(+) in its ground state and with one quantum in each of its vibrational modes: (001)--predominantly OH stretch; (010)--bend, and (100)--predominately OD stretch. In addition to integral cross sections, product recoil velocity distributions were also measured for each initial condition. The dominant reactions are near-thermoneutral proton and deuteron transfer, generating HCO(+) and DCO(+) product ions by a predominantly direct mechanism. The HCO(+) and DCO(+) channels occur with a combined efficiency of 76% for ground state HOD(+) at our lowest E(col), increasing to 94% for E(col) around 0.33 eV, then falling at high E(col) to ~40%. The HCO(+) and DCO(+) channels have a complicated dependence on the HOD(+) vibrational state. Excitation of the OH or OD stretch modes enhances H(+) or D(+) transfer, respectively, and inhibits D(+) or H(+) transfer. Bend excitation preferentially enhances H(+) transfer, with no effect on D(+) transfer. There is no coupling of energy initially in any HOD(+) vibrational mode to recoil velocity of either of the product ions, even at low E(col) where vibrational excitation doubles or triples the energy available to products. The results suggest that transfer of H or D atoms is enhanced if the atom in question has a high vibrational velocity, and that this effect offsets what is otherwise a general inhibition of reactivity by added energy. HOCO(+) + D and DOCO(+) + H products are also observed, but as minor channels despite being barrierless and exoergic. These channels appear to be complex mediated at low E(col), essentially vanish at intermediate E(col), then reappear with a direct reaction mechanism at high E(col).
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Affiliation(s)
- David M Bell
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, USA
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Fortenberry RC, Huang X, Francisco JS, Crawford TD, Lee TJ. Quartic force field predictions of the fundamental vibrational frequencies and spectroscopic constants of the cations HOCO+ and DOCO+. J Chem Phys 2012; 136:234309. [DOI: 10.1063/1.4729309] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Bodi A, Daniel Brannock M, Sztáray B, Baer T. Tunneling in H loss from energy selected ethanol ions. Phys Chem Chem Phys 2012; 14:16047-54. [DOI: 10.1039/c2cp43255b] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Hemberger P, Bodi A, Schon C, Steinbauer M, Fischer KH, Kaiser C, Fischer I. A pass too far: dissociation of internal energy selected paracyclophane cations, theory and experiment. Phys Chem Chem Phys 2012; 14:11920-9. [DOI: 10.1039/c2cp40905d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Harding ME, Vázquez J, Gauss J, Stanton JF, Kállay M. Towards highly accurate ab initio thermochemistry of larger systems: benzene. J Chem Phys 2011; 135:044513. [PMID: 21806144 DOI: 10.1063/1.3609250] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The high accuracy extrapolated ab initio thermochemistry (HEAT) protocol is applied to compute the total atomization energy (TAE) and the heat of formation of benzene. Large-scale coupled-cluster calculations with more than 1500 basis functions and 42 correlated electrons as well as zero-point energies based on full cubic and (semi)diagonal quartic force fields obtained with the coupled-cluster singles and doubles with perturbative treatment of the triples method and atomic natural orbital (ANO) triple- and quadruple-zeta basis sets are presented. The performance of modifications to the HEAT scheme and the scaling properties of its contributions with respect to the system size are investigated. A purely quantum-chemical TAE and associated conservative error bar of 5463.0 ± 3.1 kJ mol(-1) are obtained, while the corresponding 95% confidence interval, based on a statistical analysis of HEAT results for other and related molecules, is ± 1.8 kJ mol(-1). The heat of formation of benzene is determined to be 101.5 ± 2.0 kJ mol(-1) and 83.9 ± 2.1 kJ mol(-1) at 0 K and 298.15 K, respectively.
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Affiliation(s)
- Michael E Harding
- Institut für Physikalische Chemie, Universität Mainz, Jakob-Welder-Weg 11, D-55099 Mainz, Germany.
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Butschke B, Schwarz H. The “Missing Link”: The Gas-Phase Generation of Platinum-Methylidyne Clusters PtnCH+ (n=1, 2) and Their Reactions with Hydrocarbons and Ammonia. Chemistry 2011; 17:11761-72. [DOI: 10.1002/chem.201101018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Indexed: 11/07/2022]
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Borkar S, Sztáray B, Bodi A. Dissociative photoionization mechanism of methanol isotopologues (CH3OH, CD3OH, CH3OD and CD3OD) by iPEPICO: energetics, statistical and non-statistical kinetics and isotope effects. Phys Chem Chem Phys 2011; 13:13009-20. [DOI: 10.1039/c1cp21015g] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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