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Buchachenko AA, Visentin G, Viehland LA. Gaseous transport properties of the ground and excited Cr, Co and Ni cations in He: Ab initio study of electronic state chromatography. J Chem Phys 2022; 157:104303. [DOI: 10.1063/5.0107110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The electronic state chromatography (ESC) effect allows the differentiation of ions in their ground and metastable states by their gaseous mobilities in the limit of low electrostatic fields. It is investigated here by means of accurate transport calculations with ab initio ion-atom potentials for the Cr, Co and Ni cations in He buffer gas near room temperature. The values for the open-shell ions in degenerate states are shown to be well approximated by using the single isotropic interaction potential. Minimalistic implementation of the multireference configuration interaction (MRCI) method is enough to describe the zero-field transport properties of metastable ions in the 3dm-14s configuration, such as Cr+(a6D), Co+(a5F) and Ni+(4F), due to their weak and almost isotropic interaction with He atom and the low sensitivity of the measured mobilities to the potential well region. By contrast, interactions involving the ions in the ground 3dm states, such as Cr+(a6S), Co+(a3F) and Ni+(2D), are strong and anisotropic; the MRCI potentials poorly describe their transport coefficients. Even the coupled cluster with singles, doubles and non-iterative triples [CCSD(T)] approach taking into account vectorial spin-orbit coupling may not be accurate enough, as shown here for Ni+(2D). The sensitivity of ion mobility and the ESC effect to interaction potentials, similarities in ion-He interactions of the studied ions in distinct configurations, accuracy and possible improvements of the ab initio schemes, and control of the ESC effect by macroscopic parameters are discussed. Extensive sets of improved interaction potentials and transport data are generated.
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Affiliation(s)
| | | | - Larry A. Viehland
- Department of Chemistry, Chatham University, United States of America
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Kovalenko A, Roučka Š, Tran TD, Rednyk S, Plašil R, Dohnal P, Glosík J. The reaction of O +( 4S) ions with H 2, HD, and D 2 at low temperatures: Experimental study of the isotope effect. J Chem Phys 2021; 154:094301. [PMID: 33685178 DOI: 10.1063/5.0036049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The reactions of the O+ ions in the 4S electronic ground state with D2 and HD were studied in a cryogenic 22-pole radio-frequency ion trap in the temperature range of 15 K-300 K. The obtained reaction rate coefficients for both reactions are, considering the experimental errors, nearly independent of temperature and close to the values of the corresponding Langevin collisional reaction rate coefficients. The obtained branching ratios for the production of OH+ and OD+ in the reaction of O+(4S) with HD do not change significantly with temperature and are consistent with the results obtained at higher collisional energies by other groups. Particular attention was given to ensure that the O+ ions in the trap are in the ground electronic state.
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Affiliation(s)
- A Kovalenko
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague, Czech Republic
| | - Š Roučka
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague, Czech Republic
| | - T D Tran
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague, Czech Republic
| | - S Rednyk
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague, Czech Republic
| | - R Plašil
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague, Czech Republic
| | - P Dohnal
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague, Czech Republic
| | - J Glosík
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague, Czech Republic
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Cunha de Miranda B, Romanzin C, Chefdeville S, Vuitton V, Žabka J, Polášek M, Alcaraz C. Reactions of State-Selected Atomic Oxygen Ions O(+)((4)S, (2)D, (2)P) with Methane. J Phys Chem A 2015; 119:6082-98. [PMID: 25721439 DOI: 10.1021/jp512846v] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An experimental study has been carried out on the reactions of state selected O(+)((4)S, (2)D, (2)P) ions with methane with the aims of characterizing the effects of both the parent ion internal energy and collision energy on the reaction dynamics and determining the fate of oxygen species in complex media, in particular the Titan ionosphere. Absolute cross sections and product velocity distributions have been determined for the reactions of (16)O(+) or (18)O(+) ions with CH4 or CD4 from thermal to 5 eV collision energies by using the guided ion beam (GIB) technique. Dissociative photoionization of O2 with vacuum ultraviolet (VUV) synchrotron radiation delivered by the DESIRS beamline at the SOLEIL storage ring and the threshold photoion photoelectron coincidence (TPEPICO) technique are used for the preparation of purely state-selected O(+)((4)S, (2)D, (2)P) ions. A complete inversion of the product branching ratio between CH4(+) and CH3(+) ions in favor of the latter is observed for excitation of O(+) ions from the (4)S ground state to either the (2)D or the (2)P metastable state. CH4(+) and CH3(+) ions, which are by far the major products for the reaction of ground state and excited states, are strongly backward scattered in the center of mass frame relative to O(+) parent ions. For the reaction of O(+)((4)S), CH3(+) production also rises with increasing collision energy but with much less efficiency than with O(+) excitation. We found that a mechanism of dissociative charge transfer, mediated by an initial charge transfer step, can account very well for all the observations, indicating that CH3(+) production is associated with the formation of H and O atoms (CH3(+) + H + O) rather than with OH formation by an hydride transfer process (CH3(+) + OH). Therefore, as the CH4(+) production by charge transfer is also associated with O atoms, the fate of oxygen species in these reactions is essentially the O production, except for the reaction of O(+)((4)S), which also produces appreciable amounts of H2O(+) ions but only at very low collision energy. The production of O atoms and the nature of the states in which they are formed are discussed for the reactions of O(+) ions with CH4 and N2.
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Affiliation(s)
- Barbara Cunha de Miranda
- †Laboratoire de Chimie Physique, UMR 8000 CNRS-Univ. Paris Sud, Bât. 350, FR-91405 Orsay Cedex, France.,‡Laboratório de Espectroscopia e Laser, Instituto de Física, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, Boa Viagem, Niterói, RJ BR-24210-340, Brazil.,§Synchrotron SOLEIL, L'Orme des Merisiers, BP 48, St Aubin, FR-91192 Gif sur Yvette, France
| | - Claire Romanzin
- †Laboratoire de Chimie Physique, UMR 8000 CNRS-Univ. Paris Sud, Bât. 350, FR-91405 Orsay Cedex, France
| | - Simon Chefdeville
- †Laboratoire de Chimie Physique, UMR 8000 CNRS-Univ. Paris Sud, Bât. 350, FR-91405 Orsay Cedex, France
| | | | - Jan Žabka
- ⊥J. Heyrovský Institute of Physical Chemistry of the ASCR, v.v.i., Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
| | - Miroslav Polášek
- ⊥J. Heyrovský Institute of Physical Chemistry of the ASCR, v.v.i., Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
| | - Christian Alcaraz
- †Laboratoire de Chimie Physique, UMR 8000 CNRS-Univ. Paris Sud, Bât. 350, FR-91405 Orsay Cedex, France.,§Synchrotron SOLEIL, L'Orme des Merisiers, BP 48, St Aubin, FR-91192 Gif sur Yvette, France
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Shuman NS, Hunton DE, Viggiano AA. Ambient and Modified Atmospheric Ion Chemistry: From Top to Bottom. Chem Rev 2015; 115:4542-70. [DOI: 10.1021/cr5003479] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicholas S. Shuman
- Air Force Research Laboratory,
Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117, United States
| | - Donald E. Hunton
- Air Force Research Laboratory,
Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117, United States
| | - Albert A. Viggiano
- Air Force Research Laboratory,
Space Vehicles Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117, United States
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Affiliation(s)
- P. G. Richards
- Department of Physics and Astronomy; George Mason University; Fairfax Virginia USA
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Chang HB, Meng Q, Huang MB, Dong H. A theoretical study on the mechanisms of the N2(X1) + O+(4Su) reaction involving the 14A″ and X2Π states of the N2O+ion and the predissociation of the X2Π state. Mol Phys 2010. [DOI: 10.1080/00268976.2010.507224] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Iceman C, Rue C, Moision RM, Chatterjee BK, Armentrout PB. Ion mobility studies of electronically excited States of atomic transition metal cations: development of an ion mobility source for guided ion beam experiments. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2007; 18:1196-205. [PMID: 17379536 DOI: 10.1016/j.jasms.2007.02.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2006] [Revised: 02/16/2007] [Accepted: 02/16/2007] [Indexed: 05/14/2023]
Abstract
The design of an ion mobility source developed to couple to a guided ion beam tandem mass spectrometer is presented. In these exploratory studies, metal ions are created continuously by electron ionization of the volatile hexacarbonyls of the three group 6 transition metals. These ions are focused into a linear hexapole ion trap, which collects the ions and then creates high intensity pulses of ions, avoiding excessive ion losses resulting from the low duty cycle of pulsed operation. The ion pulses are injected into a six-ring drift cell filled with helium where ions having different electronic configurations can separate because they have different ion mobilities. Such separation is observed for chromium ions and compares favorably with the pioneering work of Kemper and Bowers (J. Phys. Chem.1991, 95, 5134). The results are then extended to Mo(+) and W(+), which also show efficient configuration separation. The source conditions needed for high intensities and good configuration separation are discussed in detail and suggestions for further improvements are also provided.
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Affiliation(s)
- Christopher Iceman
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, USA
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Danailov DM, Brothers R, Viehland LA, Johnsen R, Wright TG, Lee EPF. Mobility of O+ in He and interaction potential of HeO+. J Chem Phys 2006; 125:084309. [PMID: 16965014 DOI: 10.1063/1.2337634] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
New experimental measurements are reported for the mobility of O(+) ions in He gas at 300 K. The accuracy of these new values is estimated as +/-2.5%, which allows them to serve as a stringent test of a new ab initio potential that we have calculated using the RCCSD(T) method. We employed the aug-cc-pV5Z basis set with counterpoise corrections and took spin-orbit coupling into account. The present experimental values lie below the calculated ones, but the difference becomes statistically significant only at moderate and high values of the ratio of the electric field strength to the gas number density; even there they are only marginally significant.
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Wang T, Smith D, Spanĕl P. Selected ion flow tube studies of the reactions of H3O+, NO+ and O2+ with the anaesthetic gases halothane, isoflurane and sevoflurane. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2002; 16:1860-1870. [PMID: 12271451 DOI: 10.1002/rcm.804] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We have carried out a study of the reactions of H(3)O(+), NO(+) and O(2) (+), the commonly used precursor ions for selected ion flow tube mass spectrometry (SIFT-MS), with three anaesthetic gases, halothane, isoflurane and sevoflurane. The motivation for this study was to provide the necessary kinetic data that would allow the quantification of these anaesthetic gases in operating theatre air and in the breath of theatre staff and post-operative patients. A clear negative result from these experiments is that NO(+), although undergoing the simplest chemistry, is unsuitable for this SIFT-MS application. However, although the ion chemistry of H(3)O(+) and O(2) (+) with these compounds is very complex, there being several product ions in each reaction, many of which react rapidly with water molecules, monitor ions have been identified for all three anaesthetic gases when using H(3)O(+) and O(2) (+) as precursor ions. The detailed ion chemistry is discussed and the specific monitor ions are indicated. Hence, the feasibility of on-line breath monitoring is demonstrated by simple examples. These studies have opened the way to measurements in the clinical environment.
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Affiliation(s)
- Tianshu Wang
- Centre for Science and Technology in Medicine, School of Medicine, University of Keele, Thornburrow Drive Hartshill, Stoke-on-Trent ST4 7QB, UK
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Fhadil HA, Mathur D, Hasted JB. Mobilities of O+, O+* and O22+in He and Ar from ion energy distribution measurements in an injected-ion drift tube. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/15/9/019] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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11
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Li X, Huang YL, Flesch GD, Ng CY. A state-selected study of the ion–molecule reactions O+(4S,2D,2P)+N2. J Chem Phys 1997. [DOI: 10.1063/1.474087] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [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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Ng C. State‐Selected and State‐to‐State Ion‐Molecular Reaction Dynamics by Photoionization and Differential Reactivity Methods. ADVANCES IN CHEMICAL PHYSICS 1992. [DOI: 10.1002/9780470141397.ch6] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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13
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Simpson RW, Maclagan RGAR, Harland PW. Interaction potentials and mobility calculations for the HeO+ system. J Chem Phys 1987. [DOI: 10.1063/1.453661] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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14
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Burley JD, Ervin KM, Armentrout PB. Translational energy dependence of O+(4S)+N2→NO++N from thermal energies to 30 eV c.m. J Chem Phys 1987. [DOI: 10.1063/1.452144] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Miller TM, Wetterskog RE, Paulson JF. Temperature dependence of the ion–molecule reactions N++CO, C++NO, and C+, CO+, CO+2+ O2 from 90–450 K. J Chem Phys 1984. [DOI: 10.1063/1.446514] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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17
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Abdou WA, Torr DG, Richards PG, Torr MR, Breig EL. Results of a comprehensive study of the photochemistry of N2+in the ionosphere. ACTA ACUST UNITED AC 1984. [DOI: 10.1029/ja089ia10p09069] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Johnsen R, Biondi MA, Hayashi M. Mobilities of ground‐state and metastable O+, O2+, O2+, and O22+ ions in helium and neon. J Chem Phys 1982. [DOI: 10.1063/1.444126] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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DePristo AE, Sears SB. Theory of electron transfer reactions. II. Exact quantum number scaling relationship for semiclassical time‐dependent dynamics. J Chem Phys 1982. [DOI: 10.1063/1.443654] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fahey DW, Dotan I, Fehsenfeld FC, Albritton DL, Viehland LA. Energy dependence of the rate constant of the reaction N++NO at collision energies 0.04 to 2.5 eV. J Chem Phys 1981. [DOI: 10.1063/1.441484] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Rowe BR, Fahey DW, Fehsenfeld FC, Albritton DL. Rate constants for the reactions of metastable O+ ions with N2 and O2 at collision energies 0.04 to 0.2 eV and the mobilities of these ions at 300 K. J Chem Phys 1980. [DOI: 10.1063/1.439914] [Citation(s) in RCA: 78] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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