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Green ML, Jaffe NB, Heaven MC. Characterization of the Ground States of BeC 2 and BeC 2- via Photoelectron Velocity Map Imaging Spectroscopy. J Phys Chem Lett 2020; 11:88-92. [PMID: 31821759 DOI: 10.1021/acs.jpclett.9b03297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Due to their potentially unique properties, beryllium carbide materials have been the subject of many theoretical studies. However, experimental validation has been lacking due to the difficulties of working with Be. Neutral beryllium dicarbide has been predicted to have a T-shaped equilibrium structure (C2v), while previous quantum chemistry calculations for the structure of the anion had not yielded consistent results. In this study, we report photoelectron velocity map imaging spectra for the BeC2- X 2A1 → BeC2 X 1A1 transition. These data provide vibrational frequencies and the electron affinity of BeC2. Ab initio electronic structure calculations, validated against the experimental data, show that both the anion and the neutral form have C2v equilibrium geometries with polar covalent bonding between Be and the C2 subunit. Computed vibrational frequencies and the electron affinity, obtained at the CCSD(T) level of theory, were found to be in good agreement with the measurements.
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Affiliation(s)
- Mallory L Green
- Department of Chemistry , Emory University , Atlanta , Georgia 30322 , United States
| | - Noah B Jaffe
- Department of Chemistry , Emory University , Atlanta , Georgia 30322 , United States
| | - Michael C Heaven
- Department of Chemistry , Emory University , Atlanta , Georgia 30322 , United States
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Grant DJ, Dixon DA, Francisco JS. Coupled cluster study of the energetic properties of S2x (x=0,+1,1). J Chem Phys 2007; 126:144308. [PMID: 17444713 DOI: 10.1063/1.2715580] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ab initio electronic structure calculations are reported for S2, and its ions S2+ and S2-. Geometric parameters are calculated using the singles and doubles coupled cluster method, including a perturbational correction for connected triple excitation, together with systematic sequences of correlation consistent basis sets extrapolated to the complete basis set (CBS) limit. Energetic and structural properties of S2 and the S2 cation and anion are reported. The heat of formation of S2 (3Sigmag-) at 0 K in the gas phase is predicted to be 29.8 kcal/mol from the average of CBS two extrapolation procedures, less than the experimental heat of formation of S2 of 30.66+/-0.07 kcal/mol. The 0 K adiabatic ionization potential and electron affinity are predicted to be 9.37 and 1.68 eV, respectively.
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Affiliation(s)
- Daniel J Grant
- Chemistry Department, The University of Alabama, Shelby Hall, Box 870336, Tuscaloosa, Alabama 35487-0336, USA
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Redondo P, Barrientos C, Cimas A, Largo A. Structure and Stability of Small NaCn, NaCn+, and NaCn- Clusters: A Theoretical Study. J Phys Chem A 2003. [DOI: 10.1021/jp036794w] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pilar Redondo
- Departamento de Química Física, Facultad de Ciencias, Universidad de Valladolid, 47005 Valladolid, Spain
| | - Carmen Barrientos
- Departamento de Química Física, Facultad de Ciencias, Universidad de Valladolid, 47005 Valladolid, Spain
| | - Alvaro Cimas
- Departamento de Química Física, Facultad de Ciencias, Universidad de Valladolid, 47005 Valladolid, Spain
| | - Antonio Largo
- Departamento de Química Física, Facultad de Ciencias, Universidad de Valladolid, 47005 Valladolid, Spain
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Bruna PJ, Grein F. Ab initio study of the electron-spin magnetic moments (g-factors) of C2−, CSi−, Si2−, LiC2, NaC2, and LiSi2. J Chem Phys 2000. [DOI: 10.1063/1.481723] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Theoretical study of the electron-spin magnetic moments (g-factors) of F2− and Cl2− (X2−), as well as MX2 and M2X2+ compounds with M=Li, Na. Chem Phys 1999. [DOI: 10.1016/s0301-0104(99)00260-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Boldyrev AI, Simons J, Li X, Wang LS. π- and σ-Coordinated Al in AlC2- and AlCSi-. A Combined Photoelectron Spectroscopy and ab Initio Study. J Am Chem Soc 1999. [DOI: 10.1021/ja992102z] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander I. Boldyrev
- Contribution from the Department of Chemistry, The University of Utah, Salt Lake City, Utah 84112, Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300, Department of Physics, Washington State University, Richland, Washington 99352, and W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352
| | - Jack Simons
- Contribution from the Department of Chemistry, The University of Utah, Salt Lake City, Utah 84112, Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300, Department of Physics, Washington State University, Richland, Washington 99352, and W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352
| | - Xi Li
- Contribution from the Department of Chemistry, The University of Utah, Salt Lake City, Utah 84112, Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300, Department of Physics, Washington State University, Richland, Washington 99352, and W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352
| | - Lai-Sheng Wang
- Contribution from the Department of Chemistry, The University of Utah, Salt Lake City, Utah 84112, Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300, Department of Physics, Washington State University, Richland, Washington 99352, and W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352
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Bruna PJ, Grein F. Electron-Spin Magnetic Moments (g Factors) of the Oxides LiO, NaO, and the Superoxides LiO2, NaO2. An ab Initio Study. J Phys Chem A 1999. [DOI: 10.1021/jp984079u] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Pablo J. Bruna
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, Canada E3B 6E2
| | - Friedrich Grein
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, Canada E3B 6E2
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Heinemann C, Koch W, Lindner GG, Reinen D. Electronic spectrum of S2-, the electron affinity of S2, and the binding energies of neutral and anionic S3 clusters. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 52:1024-1038. [PMID: 9912341 DOI: 10.1103/physreva.52.1024] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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