1
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Robinson HT, Haakansson CT, Corkish TR, Watson PD, McKinley AJ, Wild DA. Hydrogen Bonding versus Halogen Bonding: Spectroscopic Investigation of Gas-Phase Complexes Involving Bromide and Chloromethanes. Chemphyschem 2022; 24:e202200733. [PMID: 36504309 DOI: 10.1002/cphc.202200733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 12/12/2022] [Accepted: 12/12/2022] [Indexed: 12/14/2022]
Abstract
Hydrogen bonding and halogen bonding are important non-covalent interactions that are known to occur in large molecular systems, such as in proteins and crystal structures. Although these interactions are important on a large scale, studying hydrogen and halogen bonding in small, gas-phase chemical species allows for the binding strengths to be determined and compared at a fundamental level. In this study, anion photoelectron spectra are presented for the gas-phase complexes involving bromide and the four chloromethanes, CH3 Cl, CH2 Cl2 , CHCl3 , and CCl4 . The stabilisation energy and electron binding energy associated with each complex are determined experimentally, and the spectra are rationalised by high-level CCSD(T) calculations to determine the non-covalent interactions binding the complexes. These calculations involve nucleophilic bromide and electrophilic bromine interactions with chloromethanes, where the binding motifs, dissociation energies and vertical detachment energies are compared in terms of hydrogen bonding and halogen bonding.
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Affiliation(s)
- Hayden T Robinson
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, 6009
| | - Christian T Haakansson
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, 6009
| | - Timothy R Corkish
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, 6009
| | - Peter D Watson
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, 6009.,Department of Chemistry, University of Oxford, South Parks Road, Oxford, United Kingdom, OX1 3QZ
| | - Allan J McKinley
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, 6009
| | - Duncan A Wild
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, 6009.,School of Science, Edith Cowan University, Joondalup, Western Australia, 6027
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2
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Robinson HT, Corkish TR, Haakansson CT, Watson PD, McKinley AJ, Wild DA. Spectroscopic Study of the Br - +CH 3 I→I - +CH 3 Br S N 2 Reaction. Chemphyschem 2022; 23:e202200278. [PMID: 35708114 PMCID: PMC9804238 DOI: 10.1002/cphc.202200278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/06/2022] [Indexed: 01/05/2023]
Abstract
Mass spectrometry and anion photoelectron spectroscopy have been used to study the gas-phase <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:semantics> <mml:mrow><mml:msub><mml:mi>S</mml:mi> <mml:mi>N</mml:mi></mml:msub> <mml:mn>2</mml:mn></mml:mrow> <mml:annotation>${{{\rm S}}_{{\rm N}}2}$</mml:annotation> </mml:semantics> </mml:math> reaction involving <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:semantics> <mml:msup><mml:mrow><mml:mi>B</mml:mi> <mml:mi>r</mml:mi></mml:mrow> <mml:mo>-</mml:mo></mml:msup> <mml:annotation>${{{\rm B}{\rm r}}^{-}}$</mml:annotation> </mml:semantics> </mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:semantics> <mml:mrow> <mml:msub><mml:mrow><mml:mi>C</mml:mi> <mml:mi>H</mml:mi></mml:mrow> <mml:mn>3</mml:mn></mml:msub> <mml:mi>I</mml:mi></mml:mrow> <mml:annotation>${{{\rm C}{\rm H}}_{3}{\rm I}}$</mml:annotation> </mml:semantics> </mml:math> . The anion photoelectron spectra associated with the reaction intermediates of this <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:semantics> <mml:mrow><mml:msub><mml:mi>S</mml:mi> <mml:mi>N</mml:mi></mml:msub> <mml:mn>2</mml:mn></mml:mrow> <mml:annotation>${{{\rm S}}_{{\rm N}}2}$</mml:annotation> </mml:semantics> </mml:math> reaction are presented. High-level CCSD(T) calculations have been utilised to investigate the reaction intermediates that may form as a result of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:semantics> <mml:mrow><mml:msub><mml:mi>S</mml:mi> <mml:mi>N</mml:mi></mml:msub> <mml:mn>2</mml:mn></mml:mrow> <mml:annotation>${{{\rm S}}_{{\rm N}}2}$</mml:annotation> </mml:semantics> </mml:math> reaction along various different reaction pathways, including back-side attack and front-side attack. In addition, simulated vertical detachment energies of each reaction intermediate have been calculated to rationalise the photoelectron spectra.
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Affiliation(s)
- Hayden T. Robinson
- School of Molecular SciencesThe University of Western AustraliaCrawleyWestern Australia6009
| | - Timothy R. Corkish
- School of Molecular SciencesThe University of Western AustraliaCrawleyWestern Australia6009
| | | | - Peter D. Watson
- School of Molecular SciencesThe University of Western AustraliaCrawleyWestern Australia6009,Department of ChemistryUniversity of OxfordSouth Parks RoadOxfordUnited KingdomOX1 3QZ
| | - Allan J. McKinley
- School of Molecular SciencesThe University of Western AustraliaCrawleyWestern Australia6009
| | - Duncan A. Wild
- School of Molecular SciencesThe University of Western AustraliaCrawleyWestern Australia6009,School of ScienceEdith Cowan UniversityJoondalupWestern Australia6027
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3
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Watson PD, McKinley AJ, Wild DA. Photoelectron Spectroscopy and High-Level Ab Initio Calculations of the Iodide-Methylperoxy Radical Complex. J Phys Chem A 2022; 126:3072-3079. [PMID: 35549219 DOI: 10.1021/acs.jpca.2c00299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Anion photoelectron spectroscopy has been used to investigate the structure and dynamics of CH3OOI- van der Waals complexes. Peaks within the photoelectron spectrum are attributed to photodetachment to the perturbed 2P3/2 state of I···CH3OO (3.46 eV) and the two 2P states of bare iodine. A broad feature at 1.7-2.4 eV is attributed to detachment to the excited singlet states from two O2-···CH3I complexes. This represents the first anion photoelectron spectroscopy of a halide-bound methylperoxy radical species. Complex structures have been optimized using MP2/aug-cc-pVQZ with single-point energies at W1w theory for ground-state complexes and NEVPT2 for photodetachment to excited O2. Interactions are dominated by electrostatics, with the anion species interacting with the methyl pocket of the solvating molecule, suggesting conversion via an SN2 mechanism, and excess energy leading to complex dissociation within the timescale of mass spectrometry. The calculated W1w Gibbs energies suggest that while an electron transfer (ET) pathway to conversion is available, it is comparatively unfavored.
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Affiliation(s)
- Peter D Watson
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Allan J McKinley
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Duncan A Wild
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia 6009, Australia
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4
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Halides and the carbon-carbon double bond: Interactions of ethylene with bromide and iodide. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Su Y, Hessou EP, Colombo E, Belletti G, Moussadik A, Lucas IT, Frochot V, Daudon M, Rouzière S, Bazin D, Li K, Quaino P, Tielens F. Crystalline structures of L-cysteine and L-cystine: a combined theoretical and experimental characterization. Amino Acids 2022; 54:1123-1133. [PMID: 35296914 DOI: 10.1007/s00726-022-03144-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 02/10/2022] [Indexed: 11/01/2022]
Abstract
It is assumed that genetic diseases affecting the metabolism of cysteine and the kidney function lead to two different kinds of pathologies, namely cystinuria and cystinosis whereby generate L-cystine crystals. Recently, the presence of L-cysteine crystal has been underlined in the case of cystinosis. Interestingly, it can be strikingly seen that cystine ([-S-CH2-CH-(NH2)-COOH]2) consists of two cysteine (C3H7NO2S) molecules connected by a disulfide (S-S) bond. Therefore, the study of cystine and cysteine is important for providing a better understanding of cystinuria and cystinosis. In this paper, we elucidate the discrepancy between L-cystine and L-cysteine by investigating the theoretical and experimental infrared spectra (IR), X-ray diffraction (XRD) as well as Raman spectra aiming to obtain a better characterization of abnormal deposits related to these two genetic pathologies.
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Affiliation(s)
- Yangyang Su
- Eenheid Algemene Chemie (ALGC), Materials Modeling Group, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussel, Belgium.,State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Etienne P Hessou
- Eenheid Algemene Chemie (ALGC), Materials Modeling Group, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussel, Belgium
| | - Estefania Colombo
- IQAL, Instituto de Química Aplicada del Litoral, CONICET-UNL, 3000, Santa Fe, Argentina
| | - Gustavo Belletti
- IQAL, Instituto de Química Aplicada del Litoral, CONICET-UNL, 3000, Santa Fe, Argentina
| | - Ali Moussadik
- Eenheid Algemene Chemie (ALGC), Materials Modeling Group, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussel, Belgium
| | - Ivan T Lucas
- Laboratoire LISE, UMR 8235, CNRS-SU, Sorbonne Université, Paris, France
| | - Vincent Frochot
- UMR S1155, INSERM/UPMC, 4 Rue de la Chine, 75970 Cedex 20, Paris, France.,AP-HP, Hôpital Tenon, Explorations Fonctionnelles Multidisciplinaires, 4 Rue de la Chine, 75970 Cedex 20, Paris, France
| | - Michel Daudon
- UMR S1155, INSERM/UPMC, 4 Rue de la Chine, 75970 Cedex 20, Paris, France.,AP-HP, Hôpital Tenon, Explorations Fonctionnelles Multidisciplinaires, 4 Rue de la Chine, 75970 Cedex 20, Paris, France
| | - Stéphan Rouzière
- Laboratoire de Physique des Solides, Université Paris-Saclay, CNRS, 91405, Orsay, France
| | - Dominique Bazin
- Institut de Chimie Physique, Université Paris Saclay, 310, rue Michel Magat, 91400, Orsay, France
| | - Kezhi Li
- State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Paola Quaino
- IQAL, Instituto de Química Aplicada del Litoral, CONICET-UNL, 3000, Santa Fe, Argentina
| | - Frederik Tielens
- Eenheid Algemene Chemie (ALGC), Materials Modeling Group, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussel, Belgium.
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6
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Watson PD, Corkish TR, Haakansson CT, McKinley AJ, Wild DA. Halide–propene complexes: validated DSD-PBEP86-D3BJ calculations and photoelectron spectroscopy. Phys Chem Chem Phys 2022; 24:25842-25852. [DOI: 10.1039/d2cp03796c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Anion photoelectron spectroscopy has been used to determine the electron binding energies of the X−⋯C3H6 (X = Cl, Br, I) complexes.
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Affiliation(s)
- Peter D. Watson
- School of Molecular Sciences, The University of Western Australia, Crawley, 6009, Western Australia, Australia
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QZ, UK
| | - Timothy R. Corkish
- School of Molecular Sciences, The University of Western Australia, Crawley, 6009, Western Australia, Australia
| | - Christian T. Haakansson
- School of Molecular Sciences, The University of Western Australia, Crawley, 6009, Western Australia, Australia
| | - Allan J. McKinley
- School of Molecular Sciences, The University of Western Australia, Crawley, 6009, Western Australia, Australia
| | - Duncan A. Wild
- School of Molecular Sciences, The University of Western Australia, Crawley, 6009, Western Australia, Australia
- School of Science, Edith Cowan University, Joondalup, 6027, Western Australia, Australia
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7
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Haakansson CT, Corkish TR, Watson PD, Robinson HT, Tsui T, McKinley AJ, Wild DA. Spectroscopic Investigation of Chalcogen Bonding: Halide-Carbon Disulfide Complexes. Chemphyschem 2021; 22:808-812. [PMID: 33704887 DOI: 10.1002/cphc.202100148] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Indexed: 11/09/2022]
Abstract
A combined experimental and theoretical approach has been used to study intermolecular chalcogen bonding. Specifically, the chalcogen bonding occurring between halide anions and CS2 molecules has been investigated using both anion photoelectron spectroscopy and high-level CCSD(T) calculations. The relative strength of the chalcogen bond has been determined computationally using the complex dissociation energies as well as experimentally using the electron stabilisation energies. The anion complexes featured dissociation energies on the order of 47 kJ/mol to 37 kJ/mol, decreasing with increasing halide size. Additionally, the corresponding neutral complexes have been examined computationally, and show three loosely-bound structural motifs and a molecular radical.
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Affiliation(s)
- Christian T Haakansson
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Perth, Western Australia
| | - Timothy R Corkish
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Perth, Western Australia
| | - Peter D Watson
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Perth, Western Australia
| | - Hayden T Robinson
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Perth, Western Australia
| | - Terrence Tsui
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Perth, Western Australia
| | - Allan J McKinley
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Perth, Western Australia
| | - Duncan A Wild
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, 6009, Perth, Western Australia
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Corkish TR, Haakansson CT, Watson PD, McKinley AJ, Wild DA. Photoelectron Spectroscopy and Structures of X - ⋅⋅⋅CH 2 O (X=F, Cl, Br, I) Complexes. Chemphyschem 2021; 22:69-75. [PMID: 33184977 DOI: 10.1002/cphc.202000852] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/12/2020] [Indexed: 11/11/2022]
Abstract
A combined experimental and theoretical approach has been used to investigate X- ⋅⋅⋅CH2 O (X=F, Cl, Br, I) complexes in the gas phase. Photoelectron spectroscopy, in tandem with time-of-flight mass spectrometry, has been used to determine electron binding energies for the Cl- ⋅⋅⋅CH2 O, Br- ⋅⋅⋅CH2 O, and I- ⋅⋅⋅CH2 O species. Additionally, high-level CCSD(T) calculations found a C2v minimum for these three anion complexes, with predicted electron detachment energies in excellent agreement with the experimental photoelectron spectra. F- ⋅⋅⋅CH2 O was also studied theoretically, with a Cs hydrogen-bonded complex found to be the global minimum. Calculations extended to neutral X⋅⋅⋅CH2 O complexes, with the results of potential interest to atmospheric CH2 O chemistry.
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Affiliation(s)
- Timothy R Corkish
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Christian T Haakansson
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Peter D Watson
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Allan J McKinley
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Duncan A Wild
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, 6009, Australia
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9
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Haakansson CT, Corkish TR, Watson PD, McKinley AJ, Wild DA. The bromide-bromomethyl radical dimer complex: Anion photoelectron spectroscopy and CCSD(T) calculations. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.138060] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Corkish TR, Haakansson CT, McKinley AJ, Wild DA. Evidence For a Water-Stabilised Ion Radical Complex: Photoelectron Spectroscopy and Ab Initio Calculations. Aust J Chem 2020. [DOI: 10.1071/ch19428] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A photoelectron spectrum corresponding to an unknown 174m/z anion complex has been recorded. Initially believed to be I−…CH3CH2OH (173m/z), the spectrum has been assigned as belonging to that of an I−…H2O…CH3CH2 radical anion complex. The major peaks in the photoelectron spectrum occur at 3.54eV and 4.48eV as the 2P3/2 and 2P1/2 spin-orbit states of iodine respectively. Ab initio calculations were performed in order to rationalise the existence of the complex, with all structures converging to a ‘ring-like’ geometry, with the iodide anion bound to both the water molecule as well as a hydrogen of the ethyl radical, with the other hydrogen of water bound to the unpaired electron site of the ethyl. Simulated vertical detachment energies of 3.59eV and 4.53eV were found to be in agreement with the experimental results.
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11
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Corkish TR, Haakansson CT, McKinley AJ, Wild DA. The Structure of CCl 5- in the Gas Phase. J Phys Chem Lett 2019; 10:5338-5342. [PMID: 31436999 DOI: 10.1021/acs.jpclett.9b02242] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The first experimental evidence of the structure of the CCl5- gas-phase anion complex is presented in conjunction with results from high-level theoretical calculations. The photoelectron spectrum of the system shows a single peak with a maximum at 4.22 eV. Coupled cluster single double (triple) detachment energies of two stable C3v ion-molecule complexes of the form Cl-···CCl4 were also determined. The first complex found features the Cl- bound linearly in a Cl-···Cl-C bonding arrangement, while the second, less stable minimum has the Cl- positioned at the face of the CCl4 molecule, midway between three chlorine atoms. The calculated detachment energy for the first complex was found to be in excellent agreement with experiment, allowing the structure of CCl5- in the gas phase to be postulated as a noncovalent Cl-···CCl4 anion complex, with the Cl- anion tethered by a typical halogen bond.
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Affiliation(s)
- Timothy R Corkish
- School of Molecular Sciences , The University of Western Australia , Crawley 6009 , Western Australia , Australia
| | - Christian T Haakansson
- School of Molecular Sciences , The University of Western Australia , Crawley 6009 , Western Australia , Australia
| | - Allan J McKinley
- School of Molecular Sciences , The University of Western Australia , Crawley 6009 , Western Australia , Australia
| | - Duncan A Wild
- School of Molecular Sciences , The University of Western Australia , Crawley 6009 , Western Australia , Australia
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12
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Lapere KML, McKinley AJ, Wild D. Anion Photoelectron Spectroscopy and High Level Ab Initio Calculations of the Halide–Nitric Oxide Dimer Complexes. Aust J Chem 2018. [DOI: 10.1071/ch17581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Anion photoelectron spectra are presented for gas phase complexes formed between halide anions and nitric oxide, X−⋯NO where X− = Cl−, Br−, and I−. Electron binding energies are experimentally determined to be 3.82, 3.51, and 3.17 eV. Results from CCSD(T)/aug-cc-pVTZ calculations are presented for the anion species, whereby a single minimum of Cs symmetry is predicted. Binding energies (D0) of 15.3, 13.3, and 11.7 kJ mol−1 are predicted from complete basis set limit extrapolation, and are found to be in line with previous experimental studies.
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13
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Kishimoto N, Nishi Y. An automated exploration of the isomerization and dissociation pathways of ( E )-1,2-dichloroethene cations and anions. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.02.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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15
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Beckham D, Conran S, Lapere K, Kettner M, McKinley A, Wild D. Anion photoelectron spectroscopy and high level ab initio calculations of the halide–acetylene dimer complexes. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2014.11.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Karton A, Kettner M, Wild D. Sneaking up on the Criegee intermediate from below: Predicted photoelectron spectrum of the CH2OO− anion and W3-F12 electron affinity of CH2OO. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.08.075] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Lapere KM, LaMacchia RJ, Quak LH, Kettner M, Dale SG, McKinley AJ, Wild DA. Anion Photoelectron Spectra and Ab Initio Calculations of the Iodide–Carbon Monoxide Clusters: I–···(CO)n, n = 1–4. J Phys Chem A 2012; 116:3577-84. [DOI: 10.1021/jp300471x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kim M. Lapere
- School of Chemistry and Biochemistry, The University of Western Australia,
M313 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Robert J. LaMacchia
- School of Chemistry and Biochemistry, The University of Western Australia,
M313 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Lin H. Quak
- School of Chemistry and Biochemistry, The University of Western Australia,
M313 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Marcus Kettner
- School of Chemistry and Biochemistry, The University of Western Australia,
M313 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Stephen G. Dale
- School of Chemistry and Biochemistry, The University of Western Australia,
M313 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Allan J. McKinley
- School of Chemistry and Biochemistry, The University of Western Australia,
M313 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
| | - Duncan A. Wild
- School of Chemistry and Biochemistry, The University of Western Australia,
M313 35 Stirling Highway, Crawley, 6009, Western Australia, Australia
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18
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Lapere KM, LaMacchia RJ, Quak LH, Kettner M, Dale SG, McKinley AJ, Wild DA. The Bromide - Carbon Monoxide Gas Phase Complex: Anion Photoelectron Spectroscopy and Ab Initio Calculations. Aust J Chem 2012. [DOI: 10.1071/ch12007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The anion photoelectron spectrum of the bromide–carbon monoxide complex is presented in combination with supporting ab initio calculations. The spectrum features transitions between anion and neutral van der Waals complexes, Br⋯CO. A stabilization energy of 0.14 ± 0.05 eV is extracted from the spectrum, while the predicted binding energy for the anion complex is 9.9 kJ mol–1 from CCSD(T)/aug-cc-pVTZ calculations. The electron affinity of the Br⋯CO complex is 3.50 ± 0.05 eV. The ab initio calculations reveal a previously unreported minimum for the neutral radical complex, namely the van der Waals Br⋯OC linear complex.
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