|
1
|
Ideböhn V, Linguerri R, Cornetta LM, Olsson E, Wallner M, Squibb RJ, Couto RC, Karlsson L, Nyman G, Hochlaf M, Eland JHD, Ågren H, Feifel R. Symmetry breaking in core-valence double ionisation of allene. Commun Chem 2023; 6:137. [PMID: 37400533 DOI: 10.1038/s42004-023-00934-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 06/16/2023] [Indexed: 07/05/2023] Open
Abstract
Conventional electron spectroscopy is an established one-electron-at-the-time method for revealing the electronic structure and dynamics of either valence or inner shell ionized systems. By combining an electron-electron coincidence technique with the use of soft X-radiation we have measured a double ionisation spectrum of the allene molecule in which one electron is removed from a C1s core orbital and one from a valence orbital, well beyond Siegbahns Electron-Spectroscopy-for-Chemical-Analysis method. This core-valence double ionisation spectrum shows the effect of symmetry breaking in an extraordinary way, when the core electron is ejected from one of the two outer carbon atoms. To explain the spectrum we present a new theoretical approach combining the benefits of a full self-consistent field approach with those of perturbation methods and multi-configurational techniques, thus establishing a powerful tool to reveal molecular orbital symmetry breaking on such an organic molecule, going beyond Löwdins standard definition of electron correlation.
Collapse
Affiliation(s)
- Veronica Ideböhn
- University of Gothenburg, Department of Physics, Origovgen 6B, SE-412 58, Gothenburg, Sweden
| | - Roberto Linguerri
- Universite Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes 77454, Champs sur Marne, France
| | - Lucas M Cornetta
- Uppsala University, Department of Physics and Astronomy, Box 516, SE-751 20, Uppsala, Sweden
- Department of Applied Physics, Gleb Wataghin Institute of Physics, State University of Campinas, Campinas, Brazil
| | - Emelie Olsson
- University of Gothenburg, Department of Physics, Origovgen 6B, SE-412 58, Gothenburg, Sweden
| | - Måns Wallner
- University of Gothenburg, Department of Physics, Origovgen 6B, SE-412 58, Gothenburg, Sweden
| | - Richard J Squibb
- University of Gothenburg, Department of Physics, Origovgen 6B, SE-412 58, Gothenburg, Sweden
| | - Rafael C Couto
- Division of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-106 91, Stockholm, Sweden
| | - Leif Karlsson
- Uppsala University, Department of Physics and Astronomy, Box 516, SE-751 20, Uppsala, Sweden
| | - Gunnar Nyman
- University of Gothenburg, Department of Chemistry and Molecular Biology, Kemigården 4, SE-412 96, Gothenburg, Sweden
| | - Majdi Hochlaf
- Universite Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes 77454, Champs sur Marne, France
| | - John H D Eland
- Oxford University, Department of Chemistry, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford, OX1 3QZ, UK
| | - Hans Ågren
- Uppsala University, Department of Physics and Astronomy, Box 516, SE-751 20, Uppsala, Sweden
| | - Raimund Feifel
- University of Gothenburg, Department of Physics, Origovgen 6B, SE-412 58, Gothenburg, Sweden.
| |
Collapse
|
|
2
|
Affiliation(s)
- R. R. Valiev
- Department of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Optics and Spectroscopy, Tomsk State University, Tomsk, Russian Federation
- Department of General Chemistry and Chemical Engineering, Tomsk Polytechnic University, Tomsk, 634050, Russan Federation
| | - J. H. D. Eland
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, Oxford, United Kingdom
| | - R. Feifel
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | - H. Ågren
- Department of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, Stockholm, Sweden
| |
Collapse
|
|
3
|
Zagorodskikh S, Eland JHD, Zhaunerchyk V, Mucke M, Squibb RJ, Linusson P, Feifel R. Mechanisms of site-specific photochemistry following core-shell ionization of chemically inequivalent carbon atoms in acetaldehyde (ethanal). J Chem Phys 2016; 145:124302. [DOI: 10.1063/1.4962823] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Sergey Zagorodskikh
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - John H. D. Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - Vitali Zhaunerchyk
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - Melanie Mucke
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
| | - Richard J. Squibb
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| | - Per Linusson
- Department of Physics, Stockholm University, AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - Raimund Feifel
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96 Gothenburg, Sweden
| |
Collapse
|