1
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Gao XF, An F, Li H, Xie JC, Wang XD, Meng X, Wu B, Xie DQ, Tian SX. Probing the Potential Energy Surfaces of BrCN - by Dissociative Electron Attachment. J Phys Chem Lett 2020; 11:9110-9116. [PMID: 33049137 DOI: 10.1021/acs.jpclett.0c02991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
State coupling certainly determines the topologic features of the molecular potential energy surface (PES) and potentially diversifies chemical reaction pathways. Here we report the new PESs of BrCN- in the low-lying electronic states that are distinctly different from the previous predictions in the short Br-CN bond region but validated by the high-resolution ion velocity imaging measurements of low-energy dissociative electron attachment (DEA) to BrCN. Besides the vibrating CN- ions produced in the fast Br-CN bond stretching motions, we confirm that the ro-vibrating CN- ions with a nearly isotropic angular distribution are produced by receiving a torque in the combinational motion of Br-CN bond bending and stretching. The latter process is closely related to the potential well of BrCN- at the first excited state A2Π3/2 that arises from the Π-Σ state couplings. Our findings not only suggest that the PESs of other anionic cyanogen halides are in dire need of reexamination but also show that ion velocity imaging of the DEA process is a powerful experimental method for evaluating the theoretical PESs of molecular anions.
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Affiliation(s)
- Xiao-Fei Gao
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Feng An
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Institute of Theoretical and Computational Chemistry, Nanjing University, Nanjing 210023, China
| | - Hao Li
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Jing-Chen Xie
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xu-Dong Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xin Meng
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Bin Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Dai-Qian Xie
- Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Institute of Theoretical and Computational Chemistry, Nanjing University, Nanjing 210023, China
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei 230026, China
| | - Shan Xi Tian
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei 230026, China
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2
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Anila S, Suresh CH. Formation of large clusters of CO2 around anions: DFT study reveals cooperative CO2 adsorption. Phys Chem Chem Phys 2019; 21:23143-23153. [DOI: 10.1039/c9cp03348c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cooperative O⋯C secondary interactions compensate for the diminishing effect of primary anion⋯C interactions in anionic clusters of CO2 molecules.
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Affiliation(s)
- Sebastian Anila
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Thiruvananthapuram
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Thiruvananthapuram
- India
- Academy of Scientific and Innovative Research (AcSIR)
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3
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Thomas DA, Mucha E, Gewinner S, Schöllkopf W, Meijer G, von Helden G. Vibrational Spectroscopy of Fluoroformate, FCO 2-, Trapped in Helium Nanodroplets. J Phys Chem Lett 2018; 9:2305-2310. [PMID: 29669208 DOI: 10.1021/acs.jpclett.8b00664] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fluoroformate, also known as carbonofluoridate, is an intriguing molecule readily formed by the reductive derivatization of carbon dioxide. In spite of its well-known stability, a detailed structural characterization of the isolated anion has yet to be reported. Presented in this work is the vibrational spectrum of fluoroformate obtained by infrared action spectroscopy of ions trapped in helium nanodroplets, the first application of this technique to a molecular anion. The experimental method yields narrow spectral lines, providing experimental constraints on the structure that can be accurately reproduced using high-level ab initio methods. In addition, two notable Fermi resonances between a fundamental and combination band are observed. The electrostatic potential map of fluoroformate reveals substantial charge density on fluorine as well as on the oxygen atoms, suggesting multiple sites for interaction with hydrogen bond donors and electrophiles, which may in turn lead to intriguing solvation structures and reaction pathways.
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Affiliation(s)
- Daniel A Thomas
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , Faradayweg 4-6 , 14195 Berlin , Germany
| | - Eike Mucha
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , Faradayweg 4-6 , 14195 Berlin , Germany
| | - Sandy Gewinner
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , Faradayweg 4-6 , 14195 Berlin , Germany
| | - Wieland Schöllkopf
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , Faradayweg 4-6 , 14195 Berlin , Germany
| | - Gerard Meijer
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , Faradayweg 4-6 , 14195 Berlin , Germany
| | - Gert von Helden
- Fritz-Haber-Institut der Max-Planck-Gesellschaft , Faradayweg 4-6 , 14195 Berlin , Germany
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4
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5
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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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6
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Han Y, Kilin DS, May PS, Berry MT, Meng Q. Photofragmentation Pathways for Gas-Phase Lanthanide Tris(isopropylcyclopentadienyl) Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00420] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yulun Han
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Dmitri S. Kilin
- Department
of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - P. Stanley May
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Mary T. Berry
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Qingguo Meng
- Shenyang Institute of Automation, Guangzhou, Chinese Academy of Sciences, Guangzhou 511458, China
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7
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Lapere KML, Kettner M, Watson PD, McKinley AJ, Wild DA. Halide–Nitrogen Gas-Phase Clusters: Anion Photoelectron Spectroscopy and High Level ab Initio Calculations. J Phys Chem A 2015; 119:9722-8. [DOI: 10.1021/acs.jpca.5b06348] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kim M. L. Lapere
- School
of Chemistry and Biochemistry, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Marcus Kettner
- School
of Chemistry and Biochemistry, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Peter D. Watson
- School
of Chemistry and Biochemistry, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Allan J. McKinley
- School
of Chemistry and Biochemistry, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Duncan A. Wild
- School
of Chemistry and Biochemistry, The University of Western Australia, Crawley, Western Australia, 6009, Australia
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8
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Murphy LJ, Robertson KN, Kemp RA, Tuononen HM, Clyburne JAC. Structurally simple complexes of CO2. Chem Commun (Camb) 2015; 51:3942-56. [DOI: 10.1039/c4cc08510h] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A wide range of structurally characterized adducts of CO2are discussed in this review, from the strongly bound, charge assisted carbamate complexes through the weaker halide and pseudo-halide complexes to the weakest possible inclusion complexes.
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Affiliation(s)
- Luke J. Murphy
- The Atlantic Centre for Green Chemistry
- Department of Chemistry
- Saint Mary's University
- Halifax
- Canada
| | - Katherine N. Robertson
- The Atlantic Centre for Green Chemistry
- Department of Chemistry
- Saint Mary's University
- Halifax
- Canada
| | - Richard A. Kemp
- Department of Chemistry
- University of New Mexico
- Albuquerque
- USA
- Advanced Materials Laboratory
| | | | - Jason A. C. Clyburne
- The Atlantic Centre for Green Chemistry
- Department of Chemistry
- Saint Mary's University
- Halifax
- Canada
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9
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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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10
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Weber JM. The interaction of negative charge with carbon dioxide – insight into solvation, speciation and reductive activation from cluster studies. INT REV PHYS CHEM 2014. [DOI: 10.1080/0144235x.2014.969554] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Opoku-Agyeman B, Case AS, Lehman JH, Lineberger WC, McCoy AB. Nonadiabatic photofragmentation dynamics of BrCN-. J Chem Phys 2014; 141:084305. [PMID: 25173012 DOI: 10.1063/1.4892981] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The photofragmentation dynamics of BrCN(-) in the 270-355 nm and the 430-600 nm wavelength regions is explored both experimentally and theoretically. In the case of excitation between 430 nm and 600 nm, it is found that the molecular ion accesses two dissociation channels with a measured 60:40 branching ratio that is nearly constant over this range of photon energies. The dominant product channel corresponds to Br(-) + CN, while the second channel correlates to spin-orbit excited Br(*) with CN(-). A larger wavelength dependence of the branching ratio is observed at shorter wavelengths, where the fraction of Br(-) based products ranges from 80% to 95% at 355 nm and 270 nm, respectively. These branching ratios are reproduced and the mechanisms are explored by quantum dynamics calculations based on ground and excited state potential energy surfaces for BrCN(-), evaluated at the SO-MRCISD level of theory. It is found that the electronic states that correlate to the two observed product channels are coupled through the spin-orbit terms in the electronic Hamiltonian. The strength of this coupling displays a strong dependence on the Br-CN angle. Specifically, after promotion to the excited state that is energetically accessible with 430-600 nm photons, it is found that when the wave packet accesses Br-CN separations of between 4 Å and 6 Å, predominantly the Br(-) + CN products are formed when the Br-CN angle is smaller than 120°. For larger values of the Br-CN angle, the Br(*) + CN(-) channel dominates. At the shorter wavelength excitation, the dynamics is complicated by a pair of states that correlate to electronically excited CN(*) + Br(-) products that borrow oscillator strength from the bright state, leading to an increase in the amount of Br(-) relative to CN(-). The implications of these findings are discussed and compared to the experimentally measured product branching ratios for the photodissociation of BrCN(-).
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Affiliation(s)
- Bernice Opoku-Agyeman
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, USA
| | - Amanda S Case
- JILA and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, USA
| | - Julia H Lehman
- JILA and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, USA
| | - W Carl Lineberger
- JILA and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, USA
| | - Anne B McCoy
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, USA
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12
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Case AS, McCoy AB, Carl Lineberger W. Dynamics of Small, Ultraviolet-Excited ICN– Cluster Anions. J Phys Chem A 2013; 117:13310-8. [DOI: 10.1021/jp4051758] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Amanda S. Case
- JILA and Department of Chemistry
and Biochemistry, University of Colorado at Boulder, Boulder, Colorado 80309, United States
| | - Anne B. McCoy
- Department of Chemistry and
Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - W. Carl Lineberger
- JILA and Department of Chemistry
and Biochemistry, University of Colorado at Boulder, Boulder, Colorado 80309, United States
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