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Mondal T, Varandas AJC. On the rearrangement and dissociation mechanism of SiH4+ in its triply-degenerate ground state. J Chem Phys 2024; 160:234302. [PMID: 38884400 DOI: 10.1063/5.0213425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 05/30/2024] [Indexed: 06/18/2024] Open
Abstract
An ab initio molecular orbital study has been performed to explore the structural rearrangement and dissociation of SiH4+ radical cation at the X̃2T2 ground electronic state. All stationary points located on the lowest adiabatic sheet of Jahn-Teller (JT) split X̃2T2 state are fully optimized and characterized by performing harmonic vibrational frequency calculations. The structural rearrangement is predicted to start with JT distortions involving the doubly-degenerate (e) and triply-degenerate (t2) modes. The e mode reduces the initial Td symmetry of the SiH4+ ground state to a D2d saddle point, which eventually dissociates into the SiH3+(2A1) + H products via C3v local minimum. In turn, an e-type bending of αH-Si-H yields the SiH2+(2A1) + H2 products through the first C3v local minimum and then the Cs(2A') global minimum. In the alternative pathway, the t2 mode distorts the initial Td symmetry into a loosely bound C3v local minimum, which further dissociates into the SiH3+(2A1) + H asymptote via totally symmetric Si-H stretching mode, and SiH2+(2A1) + H2 products via H-Si-H bending (e) mode through the Cs(2A') global minimum. It is further predicted that the Cs global minimum interconverts equivalent structures via a C2v transition structure. In addition, the two dissociation products are found to be connected by a second C2v transition structure.
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Affiliation(s)
- T Mondal
- Department of Chemistry, Koneru Lakshmaiah Education Foundation, Hyderabad 500 075, India
| | - A J C Varandas
- Department of Physics, Qufu Normal University, Qufu, China
- Department of Physics, Universidade Federal do Espírito Santo, 29075-910 Vitória, Brazil
- Department of Chemistry, and Chemistry Centre, University of Coimbra, 3004-535 Coimbra, Portugal
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2
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Cobos CJ, Sölter L, Tellbach E, Troe J. Shock wave and modelling study of the unimolecular dissociation of Si(CH 3) 2F 2: an access to spectroscopic and kinetic properties of SiF 2. Phys Chem Chem Phys 2021; 23:22437-22442. [PMID: 34585693 DOI: 10.1039/d1cp03298d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thermal dissociation of Si(CH3)2F2 was studied in shock waves between 1400 and 1900 K. UV absorption-time profiles of its dissociation products SiF2 and CH3 were monitored. The reaction proceeds as a unimolecular process not far from the high-pressure limit. Comparing modelled and experimental results, an asymmetric representation of the falloff curves was shown to be most realistic. Modelled limiting high-pressure rate constants agreed well with the experimental data. The UV absorption spectrum of SiF2 was shown to be quasi-continuous, with a maximum near 222 nm and a wavelength-integrated absorption cross section of 4.3 (±1) × 10-23 cm3 (between 195 and 255 nm, base e), the latter being consistent with radiative lifetimes from the literature. Experiments over the range 1900-3200 K showed that SiF2 was not consumed by a simple bond fission SiF2 →SiF + F, but by a bimolecular reaction SiF2 + SiF2 → SiF + SiF3 (rate constant in the range 1011-1012 cm3 mol-1 s-1), followed by the unimolecular dissociation SiF3 → SiF2 + F such that the reaction becomes catalyzed by the reactant SiF2. The analogy to a pathway CF2 + CF2 → CF + CF3, followed by CF3 → CF2 + F, in high-temperature fluorocarbon chemistry is stressed. Besides the high-temperature absorption cross sections of SiF2, analogous data for SiF are also reported.
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Affiliation(s)
- C J Cobos
- INIFTA, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET, Argentina
| | - L Sölter
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany.,Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg 11, D-37077 Göttingen, Germany.
| | - E Tellbach
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany.,Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg 11, D-37077 Göttingen, Germany.
| | - J Troe
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany.,Max-Planck-Institut für Biophysikalische Chemie, Am Fassberg 11, D-37077 Göttingen, Germany.
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Karakaya Y, Peukert S, Kasper T. Mass Spectrometric Study on the Combustion of Tetramethylsilane and the Formation of Silicon Oxide Clusters in Premixed Laminar Low-Pressure Synthesis Flames. J Phys Chem A 2018; 122:7131-7141. [DOI: 10.1021/acs.jpca.8b06510] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Y. Karakaya
- Mass Spectrometry in Reacting Flows-Thermodynamics, IVG, University of Duisburg−Essen, 47048 Duisburg, Germany
| | - S. Peukert
- IVG, Institute for Combustion and Gas Dynamics−Reactive Fluids, University of Duisburg−Essen, 47048 Duisburg, Germany
| | - T. Kasper
- Mass Spectrometry in Reacting Flows-Thermodynamics, IVG, University of Duisburg−Essen, 47048 Duisburg, Germany
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4
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Govoni M, Galli G. GW100: Comparison of Methods and Accuracy of Results Obtained with the WEST Code. J Chem Theory Comput 2018; 14:1895-1909. [PMID: 29397712 DOI: 10.1021/acs.jctc.7b00952] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reproducibility of calculations carried out within many-body perturbation theory at the G0 W0 level is assessed for 100 closed shell molecules and compared to that of density functional theory. We consider vertical ionization potentials (VIP) and electron affinities (VEA) obtained with five different codes: BerkeleyGW, FHI-aims, TURBOMOLE, VASP, and WEST. We review the approximations and parameters that control the accuracy of G0 W0 results in each code, and we discuss in detail the effect of extrapolation techniques for the parameters entering the WEST code. Differences between the VIP and VEA computed with the various codes are within ∼60 and ∼120 meV, respectively, which is up to four times larger than in the case of the best results obtained with DFT codes. Vertical ionization potentials are validated against experiment and CCSD(T) quantum chemistry results showing a mean absolute relative error of ∼4% for data obtained with WEST. Our analysis of the differences between localized orbitals and plane-wave implementations points out molecules containing Cu, I, Ga, and Xe as major sources of discrepancies, which call for a re-evaluation of the pseudopotentials used for these systems in G0 W0 calculations.
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Affiliation(s)
- Marco Govoni
- Institute for Molecular Engineering and Materials Science Division , Argonne National Laboratory , Lemont , Illinois 60439 , United States
| | - Giulia Galli
- Institute for Molecular Engineering and Materials Science Division , Argonne National Laboratory , Lemont , Illinois 60439 , United States
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5
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Maggio E, Kresse G. GW Vertex Corrected Calculations for Molecular Systems. J Chem Theory Comput 2017; 13:4765-4778. [DOI: 10.1021/acs.jctc.7b00586] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Emanuele Maggio
- Faculty of Physics
and Center
for Computational Materials Science, University of Vienna, Sensengasse
8/12, A-1090 Vienna, Austria
| | - Georg Kresse
- Faculty of Physics
and Center
for Computational Materials Science, University of Vienna, Sensengasse
8/12, A-1090 Vienna, Austria
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Maggio E, Liu P, van Setten MJ, Kresse G. GW100: A Plane Wave Perspective for Small Molecules. J Chem Theory Comput 2017; 13:635-648. [DOI: 10.1021/acs.jctc.6b01150] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Emanuele Maggio
- Faculty
of Physics and Center for Computational Materials Science, University of Vienna, Sensengasse 8/12, A-1090 Vienna, Austria
| | - Peitao Liu
- Faculty
of Physics and Center for Computational Materials Science, University of Vienna, Sensengasse 8/12, A-1090 Vienna, Austria
- Institute
of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Michiel J. van Setten
- Nanoscopic
Physics, Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Georg Kresse
- Faculty
of Physics and Center for Computational Materials Science, University of Vienna, Sensengasse 8/12, A-1090 Vienna, Austria
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Metal-free photochemical silylations and transfer hydrogenations of benzenoid hydrocarbons and graphene. Nat Commun 2016; 7:12962. [PMID: 27708336 PMCID: PMC5059713 DOI: 10.1038/ncomms12962] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 08/19/2016] [Indexed: 01/13/2023] Open
Abstract
The first hydrogenation step of benzene, which is endergonic in the electronic ground state (S0), becomes exergonic in the first triplet state (T1). This is in line with Baird's rule, which tells that benzene is antiaromatic and destabilized in its T1 state and also in its first singlet excited state (S1), opposite to S0, where it is aromatic and remarkably unreactive. Here we utilized this feature to show that benzene and several polycyclic aromatic hydrocarbons (PAHs) to various extents undergo metal-free photochemical (hydro)silylations and transfer-hydrogenations at mild conditions, with the highest yield for naphthalene (photosilylation: 21%). Quantum chemical computations reveal that T1-state benzene is excellent at H-atom abstraction, while cyclooctatetraene, aromatic in the T1 and S1 states according to Baird's rule, is unreactive. Remarkably, also CVD-graphene on SiO2 is efficiently transfer-photohydrogenated using formic acid/water mixtures together with white light or solar irradiation under metal-free conditions. Baird's rules say that the first triplet state of benzene displays antiaromatic character. Here, the authors exploit this to show that aromatic molecules can undergo rapid transfer hydrogenation or silylations without the need for metal catalysts when photochemcially excited into this state.
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9
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Toukabri R, Shi Y. Hydrogen elimination from the dissociation of methyl-substituted silanes on tungsten and tantalum surfaces. CAN J CHEM 2016. [DOI: 10.1139/cjc-2015-0166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The elimination of H2 from the dissociation of four methyl-substituted silane molecules, including monomethylsilane (MMS), dimethylsilane (DMS), trimethylsilane (TriMS), and tetramethylsilane (TMS), on a heated tungsten or tantalum filament surface has been studied using laser ionization mass spectrometry. Two complementary ionization methods, i.e., single photon ionization (SPI) using a vacuum ultraviolet wavelength at 118 nm (10.5 eV) and a dual ionization source incorporating both 10.5 eV SPI and laser-induced electron ionization, were employed to detect the production of H2. Examination of the intensity of the H2+ peak from the four molecules has shown that it increases with temperature until reaching a plateau at around 2000−2100 °C on both tungsten and tantalum filaments. These methyl-substituted silanes are dissociatively adsorbed on tungsten and tantalum surfaces by Si−H bond cleavage, and as the temperature is raised, by C−H bond rupture. Experiments with the isotopomers of MMS, DMS, and TriMS have shown that the formation of H2 follows the Langmuir−Hinshelwood mechanism where two adsorbed hydrogen atoms on metal surfaces recombine to produce H2. The determined activation energy (Ea) for H2 formation from MMS, DMS, and TriMS, in the range of 58.2−93.4 kJ mol−1, has been found to increase with the number of methyl substitutions in the precursor molecule. Comparison of these Ea values with the reported values of 51.1−78.8 kJ mol−1 for the methyl radical formation from the same three precursor molecules has led to the conclusion that the initial Si−H bond cleavage in the dissociative adsorption of MMS, DMS, and TriMS is the rate-limiting step for the formation of both H2 molecules and ·CH3 radicals.
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Affiliation(s)
- R. Toukabri
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Y.J. Shi
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada
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10
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Leach S. Size effects on cation heats of formation. III. Methyl and ethyl substitutions in group IV XH₄, X = C, Si, Ge, Sn, Pb. J Phys Chem A 2014; 118:11417-31. [PMID: 25380217 DOI: 10.1021/jp509468z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The heats of formation of alkyl-substituted XH4 (X = C, Si, Ge, Sn, Pb) ΔfH(M(+)) = IEad(M) + ΔfH (M) molecular ions have often never been measured or are not known to better than 10 or 20 kJ/mol. The present study on these Main Group IV compounds adopts a graphical approach that relates cation heats of formation to cation size. A study of methyl substitution in XH4 is followed by a similar examination of heat of formation data on ethyl substitution in methane, silane, germane, stannane, and plumbane. The results provide tests of the validity of this graphical method as well as its use as a predictive tool for determining cation and neutral heats of formation. Suggestions are made of the need to investigate or reinvestigate the ionization energies and/or the heats of formation of several of the molecules studied. Results and conclusions are tabulated.
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Affiliation(s)
- Sydney Leach
- Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), CNRS-UMR 8112, Observatoire de Paris-Meudon , 5, place Jules Janssen, 92195 Meudon, France
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11
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Toukabri R, Shi YJ. Dominance of Silylene Chemistry in the Decomposition of Monomethylsilane in the Presence of a Heated Metal Filament. J Phys Chem A 2014; 118:3866-74. [DOI: 10.1021/jp502795u] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- R. Toukabri
- Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Y. J. Shi
- Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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12
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Mondal T, Varandas AJC. Silane Radical Cation: A Theoretical Account on the Jahn–Teller Effect at a Triple Degeneracy. J Phys Chem A 2013; 117:8794-805. [DOI: 10.1021/jp404393n] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- T. Mondal
- Departamento
de Quı́mica, Universidade de Coimbra, 3004-535 Coimbra, Portugal
| | - A. J. C. Varandas
- Departamento
de Quı́mica, Universidade de Coimbra, 3004-535 Coimbra, Portugal
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13
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Toukabri R, Alkadhi N, Shi YJ. Formation of Methyl Radicals from Decomposition of Methyl-Substituted Silanes over Tungsten and Tantalum Filament Surfaces. J Phys Chem A 2013; 117:7697-704. [DOI: 10.1021/jp404882t] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- R. Toukabri
- Department of Chemistry, University of Calgary, Calgary, Alberta,
Canada T2N 1N4
| | - N. Alkadhi
- Department of Chemistry, University of Calgary, Calgary, Alberta,
Canada T2N 1N4
| | - Y. J. Shi
- Department of Chemistry, University of Calgary, Calgary, Alberta,
Canada T2N 1N4
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14
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Velasco AM, Lavín C, Sánchez de Merás AMJ, Sánchez Marín J. The electronic spectrum of SiH4: Jahn-Teller Rydberg series. J Chem Phys 2011; 135:214304. [PMID: 22149789 DOI: 10.1063/1.3664629] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The aim of the present theoretical work is to provide data necessary for a better understanding of the electronic spectrum of the silane molecule, which is affected by the Jahn-Teller effect. By selecting an adequate distorted C(2v) geometry of SiH(4), the three lower Koopmans ionization potentials are evaluated with the equation of motion coupled cluster of singles and doubles method. Vertical excitation energies for the different Rydberg series converging to the three Jahn-Teller components are inferred from ab initio coupled cluster linear response calculations. Absorption oscillator strengths for dipole-allowed electronic transitions are also determined with the molecular-adapted quantum defect orbital methodology. Predictions of new spectroscopic data on SiH(4) are reported.
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Affiliation(s)
- A M Velasco
- Departmento de Química Física, Universidad de Valladolid, E-47005 Valladolid, Spain.
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Stüger H, Hengge E, Janoschek R. PE AND UV SPECTRA OF LINEAR AND CYCLIC POLYSILANES AND ASSIGNMENT BY AB INITIO CALCULATIONS. PHOSPHORUS SULFUR 2006. [DOI: 10.1080/10426509008045897] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Harald Stüger
- a Institut für Anorganische Chemie der Technischen Universität Graz , A-8010 , Graz , Austria
| | - Edwin Hengge
- a Institut für Anorganische Chemie der Technischen Universität Graz , A-8010 , Graz , Austria
| | - Rudolf Janoschek
- b Institut für Theoretische Chemie der Karl-Franzens-Universität Graz , A-8010 , Graz , Austria
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17
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Yamada T, Kawai M, Wawro A, Suto S, Kasuya A. HREELS, STM, and STS study of CH3-terminated Si(111)-(1×1) surface. J Chem Phys 2004; 121:10660-7. [PMID: 15549950 DOI: 10.1063/1.1808121] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
An ideally (1x1)-CH(3)(methyl)-terminated Si(111) surface was composed by Grignard reaction of photochlorinated Si(111) and the surface structure was for the first time confirmed by Auger electron spectroscopy, low energy electron diffraction, high-resolution electron energy loss spectroscopy (HREELS), scanning tunneling microscopy (STM), and scanning tunneling spectroscopy (STS). HREELS revealed the vibration modes associated to the CH(3)-group as well as the C-Si bond. STM discerned an adlattice with (1x1) periodicity on Si(111) composed of protrusions with internal features, covering all surface terraces. The surface structure was confirmed to be stable at temperatures below 600 K. STS showed that an occupied-state band exists at gap voltage of -1.57 eV, generated by the surface CH(3) adlattice. This CH(3):Si(111)-(1x1) adlayer with high stability and unique electronic property is prospective for applications such as nanoscale lithography and advanced electrochemistry.
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Affiliation(s)
- Taro Yamada
- The Institute for Chemical and Physical Research (RIKEN), 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
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18
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Jung J, Gress H. Single-photon absorption of liquid cyclohexane, 2,2,4 trimethylpentane and tetramethylsilane in the vacuum ultraviolet. Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(03)01174-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Bettega MHF, Winstead C, McKoy V. Low-energy electron scattering by methylsilane. J Chem Phys 2003. [DOI: 10.1063/1.1576382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Affiliation(s)
- Vladimir O. Saik
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
| | - Sanford Lipsky
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
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Mitchell MJ, Wang X, Chin CT, Suto M, Lee LC. Quantitative photoabsorption and fluorescence spectroscopy of GeH4in the vacuum ultraviolet. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/20/20/022] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Absolute oscillator strengths for the photoabsorption of silane in the valence and Si 2p and 2s regions (7.5–350 eV). Chem Phys 1995. [DOI: 10.1016/0301-0104(95)00085-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Photolysis of tetramethylsilane near the absorption onset: mechanism and photophysics. J Photochem Photobiol A Chem 1995. [DOI: 10.1016/1010-6030(94)03953-r] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Wu CYR, Chen FZ, Judge DL. Photoabsorption and photoionization cross sections of gas phase GeH4 and Rydberg structures of GeH4 and SiH4. J Chem Phys 1993. [DOI: 10.1063/1.465321] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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25
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Chantranupong L, Hirsch G, Buenker RJ, Dillon MA. Configuration interaction calculations of the vertical electronic spectrum of silane. Chem Phys 1993. [DOI: 10.1016/0301-0104(93)80061-d] [Citation(s) in RCA: 16] [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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Licoppe C, Debauche C. Ultraviolet-induced chemical vapor deposition of silica films studied by surface-sensitive multiple-internal-reflection spectroscopy. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:4327-4336. [PMID: 10006579 DOI: 10.1103/physrevb.47.4327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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27
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Licoppe C, Nissim YI, Moison JM. Surface chemistry and growth modes in the photochemical deposition of silica films. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:6275-6278. [PMID: 10000378 DOI: 10.1103/physrevb.45.6275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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28
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Daniels T, Zhu H, Banjavčić M, Leung K. Valence-shell electron momentum distributions and ionization energy spectra of tetramethylsilane by symmetric noncoplanar (e, 2e) spectroscopy. Chem Phys 1992. [DOI: 10.1016/0301-0104(92)80078-a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Ishikawa H, Fujima K, Adachi H, Miyauchi E, Fujii T. Calculation of electronic structure and photoabsorption spectra of monosilane molecules SiH4, SiF4, and SiCl4. J Chem Phys 1991. [DOI: 10.1063/1.460251] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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Cooper G, Ibuki T, Brion C. Absolute oscillator strengths for photoabsorption, photoionization and ionic photofragmentation of silane. I. The valence shell. Chem Phys 1990. [DOI: 10.1016/0301-0104(90)89054-t] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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San-Fabián E, Louis E, Martín-Moreno L, Vergés JA. Possibility of finding reliable solid-state tight-binding parameters for the Si-N bond through quantum-chemistry calculations. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 39:1844-1855. [PMID: 9948402 DOI: 10.1103/physrevb.39.1844] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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32
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33
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Lespes G, Fernandez J, Dargelos A. VUV and photoelectronic spectra of methylstannane. Theoretical and experimental approach. Chem Phys 1987. [DOI: 10.1016/0301-0104(87)80056-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Ibuki T, Washida N, Itoh U, Toyoshima Y, Onuki H. Absorption spectra of SiCl4, Si2Cl6, SiF3CH3 and GeF4 in the VUV region. Chem Phys Lett 1987. [DOI: 10.1016/0009-2614(87)80284-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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