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Arribas D, Villalobos-Vilda V, Tosi E, Lacovig P, Baraldi A, Bignardi L, Lizzit S, Martínez JI, de Andres PL, Gutiérrez A, Martín-Gago JÁ, Merino P. In situ observation of the on-surface thermal dehydrogenation of n-octane on Pt(111). NANOSCALE 2023; 15:14458-14467. [PMID: 37458500 DOI: 10.1039/d3nr02564k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
The catalytic dehydrogenation of alkanes constitutes a key step for the industrial conversion of these inert sp3-bonded carbon chains into other valuable unsaturated chemicals. To this end, platinum-based materials are among the most widely used catalysts. In this work, we characterize the thermal dehydrogenation of n-octane (n-C8H18) on Pt(111) under ultra-high vacuum using synchrotron-radiation X-ray photoelectron spectroscopy, temperature-programmed desorption and scanning tunneling microscopy, combined with ab initio calculations. At low activation temperatures, two different dehydrogenation stages are observed. At 330 K, n-C8H18 effectively undergoes a 100% regioselective single C-H bond cleavage at one methyl end. At 600 K, the chemisorbed molecules undergo a double dehydrogenation, yielding double bonds in their carbon skeletons. Diffusion of the dehydrogenated species leads to the formation of carbon molecular clusters, which represents the first step towards poisoning of the catalyst. Our results reveal the chemical mechanisms behind the first stages of alkane dehydrogenation on a platinum model surface at the atomic scale, paving the way for designing more efficient dehydrogenation catalysts.
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Affiliation(s)
- Daniel Arribas
- Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain.
| | | | - Ezequiel Tosi
- Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain.
- Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, Trieste, Italy
| | - Paolo Lacovig
- Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, Trieste, Italy
| | - Alessandro Baraldi
- Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, Trieste, Italy
- Physics Department, University of Trieste, Via Valerio 2, 34127 Trieste, Italy
| | - Luca Bignardi
- Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, Trieste, Italy
| | - Silvano Lizzit
- Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, Trieste, Italy
| | - José Ignacio Martínez
- Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain.
| | - Pedro Luis de Andres
- Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain.
- On leave of absence at nanoteeche@surfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology, 8600-Dübendorf, Switzerland
| | - Alejandro Gutiérrez
- Applied Physics Department, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente, 7, 28049 Madrid, Spain
- Instituto Nicolás Cabrera, Cantoblanco, Calle Francisco Tomás y Valiente, 7, 28049 Madrid, Spain
| | | | - Pablo Merino
- Instituto de Ciencia de Materiales de Madrid, c/Sor Juana Inés de la Cruz, 3, Spain.
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2
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Carniato S. Valence-shell ionization of acetyl cyanide: simulation of the photoelectron and infra-red spectra. Phys Chem Chem Phys 2022; 24:24246-24263. [PMID: 36169150 DOI: 10.1039/d2cp02674k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The vibrational envelopes of the first and second lines of the acetyl cyanide valence photoelectron spectrum [Katsumata et al., J. Electron Spectrosc. Relat. Phenom., 2000, 49, 113] in the gas phase have been simulated considering the Taylor expansion of the dipole moment from zero up to the second order as well as the changes of geometries/frequencies/normal modes between the initial neutral electronic ground state and the final (15a'(-1), 3a''(-1)) cationic states. It is shown that the vibrational profile of the first band (A') extending over 3500 cm-1 with a vibrational spacing of 500 cm-1 is not due solely to the overtones (v = 0 → v' = 1, 2, 3,…) of the C-CO bending mode as previously suggested but results from a collection of (v = 0 → v' = 1) transitions with frequencies multiple of 500 cm-1 associated with the CO stretching at 1550 cm-1, C-C stretching at 1045 cm-1 and C-CO, C-CN bending modes at 370/500 cm-1 completed by combination bands. Our calculations also reveal that the structureless and asymmetric shape of the second band (A'') is due to the activation of the torsion mode at low-frequency (ω ≈ 150 cm-1) induced by the rotation (60 degrees) of the methyl group blurring the main vibrational progression (ω ≈ 1115 cm-1) corresponding to the cooperative motions of the methyl CH bending and C-CO bending/CO stretching. Infra-red spectra of the fundamental and both the 15a'(-1) and 3a''(-1) cationic states were finally simulated. In contrast to the photoemission spectra, the infrared intensity of the CO stretching motion is very weak. The spectra are mainly dominated by the v = 0 → v = 1 transition of the CN stretching and the CH symmetric bending/stretching modes, providing complementary information between photoemission and infra-red spectroscopies to capture the nature of the cationic states in acetyl-cyanide.
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Affiliation(s)
- Stéphane Carniato
- Laboratoire de Chimie Physique, Matière et Rayonnement, UMR 7614, Sorbonne Université, 4, Place Jussieu, 75231 Paris Cedex 05, France.
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3
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Ferté A, Penent F, Palaudoux J, Iwayama H, Shigemasa E, Hikosaka Y, Soejima K, Lablanquie P, Taïeb R, Carniato S. Specific chemical bond relaxation unraveled by analysis of shake-up satellites in the oxygen single site double core hole spectrum of CO 2. Phys Chem Chem Phys 2021; 24:1131-1146. [PMID: 34928271 DOI: 10.1039/d1cp03947d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We recently developed [A. Ferté, et al., J. Phys. Chem. Lett., 2020, 11, 4359] a method to compute single site double core hole (ssDCH or K-2) spectra. We refer to that method as NOTA+CIPSI. In the present paper this method is applied to the O K-2 spectrum of the CO2 molecule, and we use this as an example to discuss in detail its convergence properties. Using this approach, theoretical spectra in excellent agreement with the experimental one are obtained. Thanks to a thorough interpretation of the shake-up states responsible for the main satellite peaks and through comparison with the O K-2 spectrum of CO, we can highlight the clear signature of the two non-equivalent carbon oxygen bonds in the oxygen ssDCH CO2 dication.
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Affiliation(s)
- Anthony Ferté
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique Matière et Rayonnement (LCPMR), F-75005 Paris, France.
| | - Francis Penent
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique Matière et Rayonnement (LCPMR), F-75005 Paris, France.
| | - Jérôme Palaudoux
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique Matière et Rayonnement (LCPMR), F-75005 Paris, France.
| | - Hiroshi Iwayama
- UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585, Japan
| | - Eiji Shigemasa
- UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585, Japan
| | - Yasumasa Hikosaka
- Institute of Liberal Arts and Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Kouichi Soejima
- Department of Environmental Science, Niigata University, Niigata 950-2181, Japan
| | - Pascal Lablanquie
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique Matière et Rayonnement (LCPMR), F-75005 Paris, France.
| | - Richard Taïeb
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique Matière et Rayonnement (LCPMR), F-75005 Paris, France.
| | - Stéphane Carniato
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique Matière et Rayonnement (LCPMR), F-75005 Paris, France.
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4
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Puglisi A, Miteva T, Kennedy ET, Mosnier JP, Bizau JM, Cubaynes D, Sisourat N, Carniato S. X-ray photochemistry of carbon hydride molecular ions. Phys Chem Chem Phys 2018; 20:4415-4421. [DOI: 10.1039/c7cp08026c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Ultrafast electronic and nuclear dynamics induced by X-ray absorption in carbon hydride molecular ions are theoretically investigated.
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Affiliation(s)
- Alessandra Puglisi
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Laboratoire de Chimie Physique Matière et Rayonnement
- Paris
| | - Tsveta Miteva
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Laboratoire de Chimie Physique Matière et Rayonnement
- Paris
| | - Eugene T. Kennedy
- School of Physical Sciences and NCPST
- Dublin City University
- Dublin 9
- Ireland
| | - Jean-Paul Mosnier
- School of Physical Sciences and NCPST
- Dublin City University
- Dublin 9
- Ireland
| | - Jean-Marc Bizau
- Institut des Sciences Moléculaires d’Orsay
- CNRS
- Université Paris-Sud
- and Université Paris-Saclay
- F-91405 Orsay
| | - Denis Cubaynes
- Institut des Sciences Moléculaires d’Orsay
- CNRS
- Université Paris-Sud
- and Université Paris-Saclay
- F-91405 Orsay
| | - Nicolas Sisourat
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Laboratoire de Chimie Physique Matière et Rayonnement
- Paris
| | - Stéphane Carniato
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Laboratoire de Chimie Physique Matière et Rayonnement
- Paris
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5
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Gallandi L, Marom N, Rinke P, Körzdörfer T. Accurate Ionization Potentials and Electron Affinities of Acceptor Molecules II: Non-Empirically Tuned Long-Range Corrected Hybrid Functionals. J Chem Theory Comput 2016; 12:605-14. [DOI: 10.1021/acs.jctc.5b00873] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lukas Gallandi
- Institut
für Chemie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
| | - Noa Marom
- Physics
and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, United States
| | - Patrick Rinke
- COMP/Department
of Applied Physics, Aalto University School of Science, P.O. Box 11100, FI-00076 Aalto, Finland
| | - Thomas Körzdörfer
- Institut
für Chemie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
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6
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Gallandi L, Körzdörfer T. Long-Range Corrected DFT Meets GW: Vibrationally Resolved Photoelectron Spectra from First Principles. J Chem Theory Comput 2015; 11:5391-400. [DOI: 10.1021/acs.jctc.5b00820] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lukas Gallandi
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
| | - Thomas Körzdörfer
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
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7
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Geronés M, Erben MF, Romano RM, Cavasso Filho RL, Della Védova CO. Interstellar H3+ and HCS+ Ions Produced in the Dissociative Photoionization Process of CH3C(O)SCH3 in the Proximity of the Sulfur 2p, Carbon 1s, and Oxygen 1s Edges. J Phys Chem A 2012; 116:2571-82. [DOI: 10.1021/jp212238c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Mariana Geronés
- CEQUINOR (CONICET-UNLP), Departamento
de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. C. 962 (1900) La Plata, República
Argentina
| | - Mauricio F. Erben
- CEQUINOR (CONICET-UNLP), Departamento
de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. C. 962 (1900) La Plata, República
Argentina
| | - Rosana M. Romano
- CEQUINOR (CONICET-UNLP), Departamento
de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. C. 962 (1900) La Plata, República
Argentina
| | | | - Carlos O. Della Védova
- CEQUINOR (CONICET-UNLP), Departamento
de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. C. 962 (1900) La Plata, República
Argentina
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8
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Nelin CJ, Bagus PS, Brown MA, Sterrer M, Freund HJ. Analysis of the Broadening of X-ray Photoelectron Spectroscopy Peaks for Ionic Crystals. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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9
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Nelin CJ, Bagus PS, Brown MA, Sterrer M, Freund HJ. Analysis of the Broadening of X-ray Photoelectron Spectroscopy Peaks for Ionic Crystals. Angew Chem Int Ed Engl 2011; 50:10174-7. [DOI: 10.1002/anie.201100964] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Revised: 04/18/2011] [Indexed: 11/08/2022]
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10
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Lorenz MPA, Fuhrmann T, Streber R, Bayer A, Bebensee F, Gotterbarm K, Kinne M, Tränkenschuh B, Zhu JF, Papp C, Denecke R, Steinrück HP. Ethene adsorption and dehydrogenation on clean and oxygen precovered Ni(111) studied by high resolution x-ray photoelectron spectroscopy. J Chem Phys 2010; 133:014706. [PMID: 20614983 DOI: 10.1063/1.3456732] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The adsorption and thermal evolution of ethene (ethylene) on clean and oxygen precovered Ni(111) was investigated with high resolution x-ray photoelectron spectroscopy using synchrotron radiation at BESSY II. The high resolution spectra allow to unequivocally identify the local environment of individual carbon atoms. Upon adsorption at 110 K, ethene adsorbs in a geometry, where the two carbon atoms within the intact ethene molecule occupy nonequivalent sites, most likely hollow and on top; this new result unambiguously solves an old puzzle concerning the adsorption geometry of ethene on Ni(111). On the oxygen precovered surface a different adsorption geometry is found with both carbon atoms occupying equivalent hollow sites. Upon heating ethene on the clean surface, we can confirm the dehydrogenation to ethine (acetylene), which adsorbs in a geometry, where both carbon atoms occupy equivalent sites. On the oxygen precovered surface dehydrogenation of ethene is completely suppressed. For the identification of the adsorbed species and the quantitative analysis the vibrational fine structure of the x-ray photoelectron spectra was analyzed in detail.
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Affiliation(s)
- M P A Lorenz
- Lehrstuhl für Physikalische Chemie II, Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany
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11
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Topham BJ, Kumar M, Soos ZG. Ionization potentials of crystalline organic thin films: Position dependence due to molecular shape and charge redistribution. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.05.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Eland J, Linusson P, Hedin L, Andersson E, Rubensson JE, Feifel R. Triple ionisation of methane by double Auger and related pathways. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2009.11.072] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Parent P, Bournel F, Lasne J, Lacombe S, Strazzulla G, Gardonio S, Lizzit S, Kappler JP, Joly L, Laffon C, Carniato S. The irradiation of ammonia ice studied by near edge x-ray absorption spectroscopy. J Chem Phys 2009; 131:154308. [DOI: 10.1063/1.3243849] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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14
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Kimberg V, Kosugi N, Gel’mukhanov F. Theoretical studies of angle-resolved ion yield spectra of core-to-valence transitions of acetylene. J Chem Phys 2009; 130:114302. [DOI: 10.1063/1.3089226] [Citation(s) in RCA: 8] [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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15
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Rocco MLM, Haeming M, Batchelor DR, Fink R, Schöll A, Umbach E. Electronic relaxation effects in condensed polyacenes: A high-resolution photoemission study. J Chem Phys 2009; 129:074702. [PMID: 19044787 DOI: 10.1063/1.2966356] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present a high-resolution photoelectron spectroscopy investigation of condensed films of benzene, naphthalene, anthracene, tetracene, and pentacene. High spectroscopic resolution and a systematic variation of the molecular size allow a detailed analysis of the fine structures. The line shapes of the C 1s main lines are analyzed with respect to the different contributions of inhomogeneous broadening, vibronic coupling, and chemical shifts. The shake-up satellite spectra reveal trends, which give insight into the charge redistribution within the molecule upon photoexcitation. In particular, the shake-up between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) increases in intensity and moves closer toward the C 1s main line if the size of the aromatic system is increased. An explanation is given on the basis of the delocalization of the aromatic system and its capability in screening the photogenerated core hole. A comparison of the HOMO-LUMO shake-up position to the optical band gap gives additional insight into the reorganization of the electronic system upon photoexcitation.
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Affiliation(s)
- M L M Rocco
- Instituto de Quimica, Universidade Federal do Rio de Janeiro, Ilha do Fundao, Rio de Janeiro 21941-909, Rio de Janeiro, Brazil.
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16
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Ehara M, Nakatsuji H. Geometry Relaxations After Inner-Shell Excitations and Ionizations. ACTA ACUST UNITED AC 2008. [DOI: 10.1135/cccc20080771] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The geometry relaxations due to the inner-shell excitations and ionizations have been studied by the SAC-CI method. The characteristic molecular geometry changes were predicted for the core-hole states of CH4, NH3, H2O and HF: the calculated CH bond length change agrees well with the result simulated by the observed spectrum. The C1s excitation spectrum of CH4 was also investigated for the Rydberg states of the principal quantum numbers n = 3, 4 and 5. The potential energy curves of the dipole-allowed excited states were calculated for the totally symmetric stretching mode. The vibrational structure and Franck-Condon factors for the C1s excitation spectrum were well reproduced, which shows that the equilibrium geometries of the excited states were accurately evaluated. The geometries of the inner-shell π* excited states of N2O and CO2 were also examined. The calculated geometries of these states qualitatively agreed with the experimental values of the corresponding equivalent-core molecules.
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17
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Erben MF, Geronés M, Romano RM, Védova COD. Dissociative Photoionization of Methoxycarbonylsulfenyl Chloride, CH3OC(O)SCl, Following Sulfur 2p, Chlorine 2p, and Oxygen 1s Excitations. J Phys Chem A 2007; 111:8062-71. [PMID: 17661449 DOI: 10.1021/jp0709961] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Total ion yield spectra and photoinduced fragmentations following S 2p, Cl 2p, and O 1s inner shell excitations of methoxycarbonylsulfenyl chloride, CH(3)OC(O)SCl, have been studied in the gaseous phase by using synchrotron radiation and multicoincidence techniques, which include photoelectron-photoion coincidence (PEPICO) and photoelectron-photoion-photoion coincidence (PEPIPICO) time-of-flight (TOF) mass spectrometry. According to the analysis of the partial ion yield spectra the S+ ion signal shows a steep enhancement near the S 2p resonance, which could represent an evidence of state-specific fragmentations promoted by electronic excitations from the S 2p to vacant orbitals with strong antibonding character mainly located at the sulfur atom. The dissociation dynamics for selected PEPIPICO islands have been discussed. Fragmentation channels that involve the extrusion of H+ and CH(x)+ (x = 0, 1, 2, 3) fragments have been predominantly observed for dissociation of doubly charged CH(3)OC(O)SCl(2+).
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Affiliation(s)
- Mauricio F Erben
- CEQUINOR (CONICET-UNLP), Departamento de Química, Facultad de Ciencias Exactas. Universidad Nacional de La Plata, C. C. 962 (1900) La Plata, República Argentina
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18
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Carniato S. Anharmonicity and tunneling effects in revisited vibrational O(1s) photoelectron spectrum of water gas phase. J Chem Phys 2007; 126:224307. [PMID: 17581054 DOI: 10.1063/1.2736700] [Citation(s) in RCA: 8] [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 authors have revisited the description of the core-hole ionization dynamics of the oxygen atom in water by re-exploiting the high-resolution, vibrationally resolved, XPS photoelectron spectrum of gas phase at the O(1s) edge. The agreement between theory and experiments is mainly controlled by (i) the description of the tunneling behavior near the barrier top (linear H-O-H conformation) of wave functions with high vibrational quanta, and (ii) the relative displacement of the potential-energy minimum of the O(1s) final state with respect to the ground state one. Accurate change in bond angle between the neutral and core-ionized states is essential to account for the Franck-Condon factors. The O(1s) photoelectron spectrum of water is well reproduced by the molecular ab initio calculations based on density functional theory and Franck-Condon factors calculations in a double-well (2 x W) simulation of the bending motion.
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Affiliation(s)
- Stéphane Carniato
- Laboratoire de Chimie Physique, Matière et Rayonnement, UMR 7614, Université Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France.
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19
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Ehara M, Tamaki R, Nakatsuji H, Lucchese R, Söderström J, Tanaka T, Hoshino M, Kitajima M, Tanaka H, De Fanis A, Ueda K. Vibrationally resolved nitrogen K-shell photoelectron spectra of the dinitrogen oxide molecule: Experiment and theory. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.02.057] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Tanaka T, Ueda K, Feifel R, Karlsson L, Tanaka H, Hoshino M, Kitajima M, Ehara M, Fukuda R, Tamaki R, Nakatsuji H. Symmetry and vibrationally resolved absorption spectra near the O K edge of N2O: Experiment and theory. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2006.12.071] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Steinrück HP, Fuhrmann T, Papp C, Tränkenschuh B, Denecke R. A detailed analysis of vibrational excitations in x-ray photoelectron spectra of adsorbed small hydrocarbons. J Chem Phys 2006; 125:204706. [PMID: 17144722 DOI: 10.1063/1.2397678] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The vibrational fine structure of x-ray photoelectron (XP) spectra of a number of different small hydrocarbon molecules and reaction intermediates adsorbed on Pt(111) and Ni(111) has been investigated in detail. The data for methyl, methylidyne, acetylene, and ethylene can consistently be analyzed within the linear coupling model. The S factor, i.e., the intensity ratio of the first vibrationally excited to the adiabatic transition, is obtained to be 0.17+/-0.02 per C-H bond; for the deuterated species a value of 0.23+/-0.02 is obtained. Therefore, the vibrational fine structure can be used for fingerprinting in the analysis of XP spectra and for identifying unknown reaction intermediates. From the data, Deltar, the change of the minimum in the potential energy curve upon core ionization, is calculated within the linear coupling model using a first order correction. For all adsorbates, including the deuterated ones, a value of Deltar=0.060+/-0.004 A is obtained. Furthermore, from the binding energy of the adiabatic peak and from the energy of the vibrational excitation in the ionic final state some information on the adsorbate/substrate bond and the adsorption site can be derived.
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Affiliation(s)
- H-P Steinrück
- Lehrstuhl für Physikalische Chemie II, Universität Erlangen-Nürnberg, Egerlandstrasse 3, D-91058 Erlangen, Germany
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22
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First observation of vibrations in core-level photoelectron spectra of free neutral molecular clusters. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.08.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abu-samha M, Børve KJ, Saethre LJ, Ohrwall G, Bergersen H, Rander T, Björneholm O, Tchaplyguine M. Lineshapes in carbon 1s photoelectron spectra of methanol clusters. Phys Chem Chem Phys 2006; 8:2473-82. [PMID: 16721431 DOI: 10.1039/b516905d] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general protocol for theoretical modeling of inner-shell photoelectron spectra of molecular clusters is presented and applied to C1s spectra of oligomers and medium-sized clusters of methanol. The protocol employs molecular dynamics for obtaining cluster geometries and a polarizable force field for computing site-specific chemical shifts in ionization energy and linewidth. Comparisons to spectra computed from first-principle theories are used to establish the accuracy of the proposed force field approach. The model is used to analyze the C1s photoelectron spectrum of medium-sized clusters in terms of surface and bulk contributions. By treating the surface-to-bulk ratio as an adjustable parameter, satisfactory fits are obtained to experimental C1s spectra of a beam of methanol clusters.
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Affiliation(s)
- M Abu-samha
- Department of Chemistry, University of Bergen, Norway.
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24
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Erben MF, Geronés M, Romano RM, Della Védova CO. Evidence of Site-Specific Fragmentation on Thioacetic Acid, CH3C(O)SH, Irradiated with Synchrotron Radiation around the S 2p and O 1s Regions. J Phys Chem A 2005; 110:875-83. [PMID: 16419984 DOI: 10.1021/jp055274t] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Site-specific fragmentations following S 2p and O 1s photoexcitation of thioacetic acid, CH3C(O)SH, have been studied by means of synchrotron radiation. Total ion yield (TIY) spectra were measured and multicoincidence techniques, which include photoelectron-photoion coincidence (PEPICO) and photoelectron-photoion-photoion coincidence (PEPIPICO) time-of-flight mass spectrometry, were applied. The equivalent-core approximation was employed in order to estimate ionization transition values, and the observed peaks were tentatively assigned. A site-specific fragmentation is moderately observed by comparing the mass spectra collected at resonant energies around the inner and shallow inner shell S 2p and O 1s ionization edges. Beside H+ ion, the most abundant ions observed at the S 2p edge excitation were CH3CO+, SH+, S+, and CH3+. At the O 1s region the large CH3CO+ fragment was depressed, and small CHx+ (x = 0, 1, 2, 3), S+, and SH+ fragments were dominant. The dissociation dynamic for the main ion-pair production has been discussed. Two- and three-body dissociation channels have been observed in the PEPIPICO spectra, and the dissociation mechanisms were proposed.
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Affiliation(s)
- Mauricio F Erben
- CEQUINOR (CONICET-UNLP), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. C. 962 (1900) La Plata, República Argentina
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25
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Carniato S, Taïeb R, Kukk E, Luo Y, Brena B. N-K near-edge x-ray-absorption fine structures of acetonitrile in gas phase. J Chem Phys 2005; 123:214301. [PMID: 16356042 DOI: 10.1063/1.2104327] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The dynamic processes of N(1s) core-hole excitation in gas-phase CH3CN molecule have been studied at both Hartree-Fock and hybrid density-functional theory levels. The vibrational structure is analyzed for fully optimized core-excited states. Frank-Condon factors are obtained using the linear coupling model for various potential surfaces. It is found that the vibrational profile of the N-K absorption can be largely described by a summation of two vibrational progressions: a structure-rich profile of nu(CN) stretching mode and a large envelope of congestioned vibrational levels related to the strong (-C-CN) terminal bending bond. Excellent agreement between theoretical and experimental spectra is obtained.
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Affiliation(s)
- Stéphane Carniato
- Laboratoire de Chimie Physique, Matière et Rayonnement, Unité Mixte de Recherche (UMR) 7614, Université Pierre et Marie Curie, Paris, Cedex 05, France.
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26
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Kukk E, Ueda K, Hergenhahn U, Liu XJ, Prümper G, Yoshida H, Tamenori Y, Makochekanwa C, Tanaka T, Kitajima M, Tanaka H. Violation of the Franck-Condon principle due to recoil effects in high energy molecular core-level photoionization. PHYSICAL REVIEW LETTERS 2005; 95:133001. [PMID: 16197136 DOI: 10.1103/physrevlett.95.133001] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2005] [Indexed: 05/04/2023]
Abstract
Carbon 1s photoelectron spectra of methane are measured over a photon energy range between 480 eV and 1200 eV. Additional components appear between the individual symmetric stretching vibrational components and are attributed to the excitations of asymmetric stretching and bending vibrations due to recoil of the high-energy photoelectron emission. This recoil effect is the evidence for the violation of the Franck-Condon principle which states that neither the positions nor the momenta of the nuclei change during the ionization event.
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Affiliation(s)
- E Kukk
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
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27
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Fuhrmann T, Kinne M, Whelan C, Zhu J, Denecke R, Steinrück HP. Vibrationally resolved in situ XPS study of activated adsorption of methane on Pt(111). Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.04.030] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Oltedal VM, Børve KJ, Sæthre LJ, Thomas TD, Bozek JD, Kukk E. Carbon 1s photoelectron spectroscopy of six-membered cyclic hydrocarbons. Phys Chem Chem Phys 2004. [DOI: 10.1039/b405109b] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Kryzhevoi NV, Dobrodey NV, Cederbaum LS. Core-hole Hamiltonians and corrected equivalent core model for systems with equivalent atoms. J Chem Phys 2003. [DOI: 10.1063/1.1626116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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31
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Thiel A, Schirmer J, Köppel H. An intermediate state representation approach to K-shell ionization in molecules. II. Computational tests. J Chem Phys 2003. [DOI: 10.1063/1.1584658] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Neubauer R, Whelan CM, Denecke R, Steinrück HP. The thermal chemistry of saturated layers of acetylene and ethylene on Ni(100) studied by in situ synchrotron x-ray photoelectron spectroscopy. J Chem Phys 2003. [DOI: 10.1063/1.1582432] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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33
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Kryzhevoi NV, Dobrodey NV, Cederbaum LS. Equivalent core model: Extended theory and applications. J Chem Phys 2003. [DOI: 10.1063/1.1533031] [Citation(s) in RCA: 7] [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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34
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Giertz A, Bässler M, Björneholm O, Wang H, Feifel R, Miron C, Karlsson L, Svensson S, Børve KJ, Sæthre LJ. High resolution C1s and S2p photoelectron spectra of thiophene. J Chem Phys 2002. [DOI: 10.1063/1.1508374] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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35
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Rennie EE, Hergenhahn U, Kugeler O, Rüdel A, Marburger S, Bradshaw AM. A core-level photoionization study of furan. J Chem Phys 2002. [DOI: 10.1063/1.1504435] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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36
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Ferré N, Assfeld X. Application of the local self-consistent-field method to core-ionized and core-excited molecules, polymers, and proteins: True orthogonality between ground and excited states. J Chem Phys 2002. [DOI: 10.1063/1.1496462] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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37
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Karlsen T, Børve KJ, Saethre LJ, Wiesner K, Bässler M, Svensson S. Toward the spectrum of free polyethylene: linear alkanes studied by carbon 1s photoelectron spectroscopy and theory. J Am Chem Soc 2002; 124:7866-73. [PMID: 12083942 DOI: 10.1021/ja010649j] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Trends in carbon 1s ionization energies for the linear alkanes have been investigated using third-generation synchrotron radiation. The study comprises CH(4), C(2)H(6), C(3)H(8), C(4)H(10), C(5)H(12), C(6)H(14), and C(8)H(18). Both inter- and intramolecular shifts in ionization energy have been determined from gas-phase spectra and ab initio calculations. The shifts are decomposed into initial-state and final-state contributions and are shown to relate to the fundamental chemical properties of group electronegativity and polarizability. By extrapolation, we predict C1s spectra of larger n-alkanes, converging toward isolated strands of polyethylene.
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Affiliation(s)
- Tor Karlsen
- Department of Chemistry, University of Bergen, N-5007 Bergen, Norway.
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38
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Wohlfarth MNR, Cederbaum LS. Systematic corrections to the equivalent core model. J Chem Phys 2002. [DOI: 10.1063/1.1473804] [Citation(s) in RCA: 10] [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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39
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Giertz A, Børve K, Bäßler M, Wiesner K, Svensson S, Karlsson L, Sæthre L. Vibrationally resolved photoelectron spectra of the carbon 1s and nitrogen 1s shells in hydrogen cyanide. Chem Phys 2002. [DOI: 10.1016/s0301-0104(01)00699-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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40
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Myrseth V, Børve KJ, Wiesner K, Bässler M, Svensson S, Sæthre LJ. Vibrational structure and vibronic coupling in the carbon 1s photoelectron spectra of benzene and deuterobenzene. Phys Chem Chem Phys 2002. [DOI: 10.1039/b208160a] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Saethre LJ, Berrah N, Bozek JD, Børve KJ, Carroll TX, Kukk E, Gard GL, Winter R, Thomas TD. Chemical insights from high-resolution X-ray photoelectron spectroscopy and ab initio theory: propyne, trifluoropropyne, and ethynylsulfur pentafluoride. J Am Chem Soc 2001; 123:10729-37. [PMID: 11674006 DOI: 10.1021/ja016395j] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
High-resolution carbon 1s photoelectron spectroscopy of propyne (HC triple bond CCH3) shows a spectrum in which the contributions from the three chemically inequivalent carbons are clearly resolved and marked by distinct vibrational structure. This structure is well accounted for by ab initio theory. For 3,3,3-trifluoropropyne (HC triple bond CCF3) and ethynylsulfur pentafluoride (HC triple bond CSF5), the ethynyl carbons show only a broad structure and have energies that differ only slightly from one another. The core-ionization energies can be qualitatively understood in terms of conventional resonance structures; the vibrational broadening for the fluorinated compounds can be understood in terms of the effects of the electronegative fluorines on the charge distribution. Combining the experimental results with gas-phase acidities and with ab initio calculations provides insights into the effects of initial-state charge distribution and final-state charge redistribution on ionization energies and acidities. In particular, these considerations make it possible to understand the apparent paradox that SF5 and CF3 have much larger electronegativity effects on acidity than they have on carbon 1s ionization energies.
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Affiliation(s)
- L J Saethre
- Department of Chemistry, University of Bergen, N-5007 Bergen, Norway
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42
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Karlsen T, Leif J. Sæthre,, Børve KJ, Berrah N, Kukk E, Bozek JD, Carroll TX, Thomas TD. Vibrational Structure and Vibronic Coupling in the Carbon 1s Photoelectron Spectra of Ethane and Deuteroethane. J Phys Chem A 2001. [DOI: 10.1021/jp010863u] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tor Karlsen
- Department of Chemistry, University of Bergen, NO-5007 Bergen, Norway, Physics Department, Western Michigan University, Kalamazoo, Michigan 49008, Department of Physical Sciences, University of Oulu, FIN-90014 Oulu, Finland, Advanced Light Source, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, Keuka College, Keuka Park, New York 14478, and Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003
| | - Leif J. Sæthre,
- Department of Chemistry, University of Bergen, NO-5007 Bergen, Norway, Physics Department, Western Michigan University, Kalamazoo, Michigan 49008, Department of Physical Sciences, University of Oulu, FIN-90014 Oulu, Finland, Advanced Light Source, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, Keuka College, Keuka Park, New York 14478, and Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003
| | - Knut J. Børve
- Department of Chemistry, University of Bergen, NO-5007 Bergen, Norway, Physics Department, Western Michigan University, Kalamazoo, Michigan 49008, Department of Physical Sciences, University of Oulu, FIN-90014 Oulu, Finland, Advanced Light Source, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, Keuka College, Keuka Park, New York 14478, and Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003
| | - Nora Berrah
- Department of Chemistry, University of Bergen, NO-5007 Bergen, Norway, Physics Department, Western Michigan University, Kalamazoo, Michigan 49008, Department of Physical Sciences, University of Oulu, FIN-90014 Oulu, Finland, Advanced Light Source, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, Keuka College, Keuka Park, New York 14478, and Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003
| | - Edwin Kukk
- Department of Chemistry, University of Bergen, NO-5007 Bergen, Norway, Physics Department, Western Michigan University, Kalamazoo, Michigan 49008, Department of Physical Sciences, University of Oulu, FIN-90014 Oulu, Finland, Advanced Light Source, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, Keuka College, Keuka Park, New York 14478, and Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003
| | - John D. Bozek
- Department of Chemistry, University of Bergen, NO-5007 Bergen, Norway, Physics Department, Western Michigan University, Kalamazoo, Michigan 49008, Department of Physical Sciences, University of Oulu, FIN-90014 Oulu, Finland, Advanced Light Source, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, Keuka College, Keuka Park, New York 14478, and Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003
| | - Thomas X. Carroll
- Department of Chemistry, University of Bergen, NO-5007 Bergen, Norway, Physics Department, Western Michigan University, Kalamazoo, Michigan 49008, Department of Physical Sciences, University of Oulu, FIN-90014 Oulu, Finland, Advanced Light Source, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, Keuka College, Keuka Park, New York 14478, and Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003
| | - T. Darrah Thomas
- Department of Chemistry, University of Bergen, NO-5007 Bergen, Norway, Physics Department, Western Michigan University, Kalamazoo, Michigan 49008, Department of Physical Sciences, University of Oulu, FIN-90014 Oulu, Finland, Advanced Light Source, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, Keuka College, Keuka Park, New York 14478, and Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003
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43
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Rennie EE, Kempgens B, Köppe HM, Hergenhahn U, Feldhaus J, Itchkawitz BS, Kilcoyne ALD, Kivimäki A, Maier K, Piancastelli MN, Polcik M, Rüdel A, Bradshaw AM. A comprehensive photoabsorption, photoionization, and shake-up excitation study of the C 1s cross section of benzene. J Chem Phys 2000. [DOI: 10.1063/1.1290029] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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44
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Muramatsu Y, Shimizu Y, Yoshida H, Okada K, Saito N, Koyano I, Tanaka H, Ueda K. Nuclear motion in the O 1s−12πu core-excited states of CO2 probed by sub-natural-width resonant Auger emission spectroscopy. Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(00)01086-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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45
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Plashkevych O, Privalov T, Ågren H, Carravetta V, Ruud K. On the validity of the equivalent cores approximation for computing X-ray photoemission and photoabsorption spectral bands. Chem Phys 2000. [DOI: 10.1016/s0301-0104(00)00171-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Lin P, Lucchese RR. Multichannel Schwinger study of C 1s photoionization of acetylene. J Chem Phys 2000. [DOI: 10.1063/1.1131443] [Citation(s) in RCA: 20] [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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47
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Karlsen T, Bo/rve KJ. Accurate and approximate calculations of Franck–Condon intensities in the carbon 1s photoelectron spectrum of methane. J Chem Phys 2000. [DOI: 10.1063/1.481398] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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48
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Fink RF, Sorensen SL, de Brito AN, Ausmees A, Svensson S. The resonant Auger electron spectrum of C 1s−1π* excited ethene: A combined theoretical and experimental investigation. J Chem Phys 2000. [DOI: 10.1063/1.481241] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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49
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Bjorneholm O, Bassler M, Ausmees A, Hjelte I, Feifel R, Wang H, Miron C, Piancastelli MN, Svensson S, Sorensen SL, Gel'mukhanov F, Agren H. Doppler splitting of In-flight auger decay of dissociating oxygen molecules: the localization of delocalized core holes. PHYSICAL REVIEW LETTERS 2000; 84:2826-2829. [PMID: 11018952 DOI: 10.1103/physrevlett.84.2826] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/1999] [Indexed: 05/23/2023]
Abstract
By exploiting the core-excitation-induced dissociation of O2, we find that the Auger emission exhibits a Doppler-like energy shift. We show this to be a manifestation of localization of the core hole and propose that the problem of core-hole localization versus delocalization in core-hole spectroscopies may be resolved by considering the nature of the measurement.
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Affiliation(s)
- O Bjorneholm
- Department of Physics, Uppsala University, Box 530, S-751 21 Uppsala, Sweden
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50
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Bo/rve KJ, Sæthre LJ, Bozek JD, True J, Thomas TD. Molecular-field splitting and vibrational structure in the phosphorus 2p photoelectron spectrum of PF3. J Chem Phys 1999. [DOI: 10.1063/1.479739] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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