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Brito BGA, Hai GQ, Cândido L. A quantum Monte Carlo study of the structural and electronic properties of small cationic and neutral lithium clusters. J Chem Phys 2017; 146:174306. [DOI: 10.1063/1.4982726] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- B. G. A. Brito
- Departamento de Física, Instituto de Ciências Exatas e Naturais e Educação (ICENE), Universidade Federal do Triângulo Mineiro - UFTM, 38064-200 Uberaba, Minas Gerais, Brazil
| | - G.-Q. Hai
- Instituto de Física de São Carlos, Universidade de São Paulo, 13560-970 São Carlos, São Paulo, Brazil
| | - Ladir Cândido
- Instituto de Física, Universidade Federal de Goiás - UFG, 74001-970 Goiânia, Goiás, Brazil
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Hu HS, Zhao YF, Hammond JR, Bylaska EJ, Aprà E, van Dam HJ, Li J, Govind N, Kowalski K. Theoretical studies of the global minima and polarizabilities of small lithium clusters. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2015.11.049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Fournier R, Bulusu S, Chen S, Tung J. Using swarm intelligence for finding transition states and reaction paths. J Chem Phys 2011; 135:104117. [DOI: 10.1063/1.3633515] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tai TB, Nhat PV, Nguyen MT, Li S, Dixon DA. Electronic Structure and Thermochemical Properties of Small Neutral and Cationic Lithium Clusters and Boron-Doped Lithium Clusters: Lin0/+ and LinB0/+ (n = 1–8). J Phys Chem A 2011; 115:7673-86. [DOI: 10.1021/jp200992u] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Truong Ba Tai
- Department of Chemistry, and Mathematical Modeling and Computational Science Center (LMCC), Katholieke Universiteit Leuven, B-3001 Leuven, Belgium
| | - Pham Vu Nhat
- Department of Chemistry, and Mathematical Modeling and Computational Science Center (LMCC), Katholieke Universiteit Leuven, B-3001 Leuven, Belgium
| | - Minh Tho Nguyen
- Department of Chemistry, and Mathematical Modeling and Computational Science Center (LMCC), Katholieke Universiteit Leuven, B-3001 Leuven, Belgium
| | - Shenggang Li
- Department of Chemistry, The University of Alabama, Shelby Hall, Box 870336, Tuscaloosa, Alabama 35847-0336, United States
| | - David A. Dixon
- Department of Chemistry, The University of Alabama, Shelby Hall, Box 870336, Tuscaloosa, Alabama 35847-0336, United States
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Abstract
A tight-binding quantum Hamiltonian and an empirical embedded-atom model (EAM) potential are used to get insight into the finite-temperature behavior of small Lin clusters, n = 8, 20, and 55. Exchange Monte Carlo simulations provide an extensive sampling of configuration space, including the putative global minimum and many relevant isomers. The heat capacities obtained from the classical simulations are corrected for low-temperature quantum delocalization using the Pitzer-Gwinn approximation. Alternatively, the caloric curves are estimated from the database of local minima using the quantum harmonic superposition approximation. While the two atomistic models predict qualitatively similar features, including some premelting effects in Li20 but none in Li55, strong variations are observed in the melting temperatures, the EAM potential giving unexpectedly low values.
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On the theory of processes in reaction centers of polyatomic molecules. Russ Chem Bull 2006. [DOI: 10.1007/s11172-006-0420-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Bernhardt TM, Hagen J, Socaciu LD, Mitrić R, Heidenreich A, Le Roux J, Popolan D, Vaida M, Wöste L, Bonacić-Koutecký V, Jortner J. Femtosecond Time-Resolved Geometry Relaxation and Ultrafast Intramolecular Energy Redistribution in Ag2Au. Chemphyschem 2005; 6:243-53. [PMID: 15751346 DOI: 10.1002/cphc.200400454] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The ultrafast dynamics of the bimetallic cluster Ag2Au is investigated by pump-probe negative ion-to-neutral-to-positive ion (NeNePo) spectroscopy. Preparation of the neutral cluster in a highly nonequilibrium state by electron detachment from the mass-selected anion, and subsequent probing of the neutral nuclear dynamics through two-photon ionization to the cationic state, leads to strongly probe-energy-dependent transient cation-abundance signals. The origin of this pronounced time and wavelength dependence of the ionization probability on the femtosecond scale is revealed by ab initio theoretical simulations of the transient spectra. Based on the analysis of underlying dynamics, two fundamental processes involving geometry relaxation from linear to triangular structure followed by ultrafast intramolecular vibrational energy redistribution (IVR) have been identified and for the first time experimentally observed in the frame of NeNePo spectroscopy under conditions close to zero electron kinetic energy.
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Affiliation(s)
- Thorsten M Bernhardt
- Institut für Experimentalphysik, Freie Universität Berlin Arnimallee 14, 14195 Berlin, Germany.
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Bonacić-Koutecký V, Mitrić R. Theoretical Exploration of Ultrafast Dynamics in Atomic Clusters: Analysis and Control. Chem Rev 2004; 105:11-66. [PMID: 15720151 DOI: 10.1021/cr0206925] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vlasta Bonacić-Koutecký
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, D-12489 Berlin, Germany.
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Aguado A, González LE, López JM. Thermal Properties of Impurity-Doped Clusters: Orbital-Free Molecular Dynamics Simulations of the Meltinglike Transition in Li1Na54 and Cs1Na54. J Phys Chem B 2004. [DOI: 10.1021/jp049274p] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrés Aguado
- Departamento de Física Teórica, Universidad de Valladolid, Valladolid 47011, Spain
| | - Luis E. González
- Departamento de Física Teórica, Universidad de Valladolid, Valladolid 47011, Spain
| | - José M. López
- Departamento de Física Teórica, Universidad de Valladolid, Valladolid 47011, Spain
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Fournier R, Bo Yi Cheng J, Wong A. Theoretical study of the structure of lithium clusters. J Chem Phys 2003. [DOI: 10.1063/1.1615237] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Krawczyk RP, Viel A, Manthe U, Domcke W. Photoinduced dynamics of the valence states of ethene: A six-dimensional potential-energy surface of three electronic states with several conical intersections. J Chem Phys 2003. [DOI: 10.1063/1.1580092] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Yamataka H, Aida M. Ab Initio Direct Molecular Dynamics Simulations and QM/MM Computations in Search of Organic Reaction Mechanisms. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2002. [DOI: 10.1246/bcsj.75.2555] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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13
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Aminova RM, Ermakova E. Rearrangements and proton transfer in nitrones by quantum chemistry and molecular dynamics. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)00719-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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de Visser SP, Danovich D, Wu W, Shaik S. Ferromagnetic Bonding: Properties of High-Spin Lithium Clusters n+1Lin (n = 2−12) Devoid of Electron Pairs. J Phys Chem A 2002. [DOI: 10.1021/jp014665e] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sam P. de Visser
- The Department of Organic Chemistry and the Lise Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel, and The Department of Chemistry and the State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, Fujian 361005, Peoples Republic of China
| | - David Danovich
- The Department of Organic Chemistry and the Lise Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel, and The Department of Chemistry and the State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, Fujian 361005, Peoples Republic of China
| | - Wei Wu
- The Department of Organic Chemistry and the Lise Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel, and The Department of Chemistry and the State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, Fujian 361005, Peoples Republic of China
| | - Sason Shaik
- The Department of Organic Chemistry and the Lise Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel, and The Department of Chemistry and the State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, Fujian 361005, Peoples Republic of China
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Calvo F, Spiegelmann F. Mechanisms of phase transitions in sodium clusters: From molecular to bulk behavior. J Chem Phys 2000. [DOI: 10.1063/1.480862] [Citation(s) in RCA: 129] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Aida M, Yamataka H, Dupuis M. Ab initio molecular dynamics simulations on the hydrolysis of methyl chloride with explicit consideration of three water molecules. Chem Phys Lett 1998. [DOI: 10.1016/s0009-2614(98)00706-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Garcia ME, Reichardt D, Bennemann KH. Theory for the ultrafast melting and fragmentation dynamics of small clusters after femtosecond ionization. J Chem Phys 1998. [DOI: 10.1063/1.476653] [Citation(s) in RCA: 7] [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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