1
|
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
| |
Collapse
|
2
|
Moreira NL, Brito BGA, Rabelo JNT, Cândido L. Quantum monte carlo study of the energetics of small hydrogenated and fluoride lithium clusters. J Comput Chem 2016; 37:1531-6. [DOI: 10.1002/jcc.24363] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/23/2016] [Accepted: 02/24/2016] [Indexed: 01/13/2023]
Affiliation(s)
- N. L. Moreira
- IFQ Regional Catalão; Universidade Federal de Goiás; Catalão Goiás 75705-020 Brazil
| | - B. G. A. Brito
- Departamento de Física; Instituto de Ciências Exatas e Naturais e Educação (ICENE) Uberaba MG, 38064-200 Brazil Universidade Federal do Triângulo Mineiro - UFTM
| | - J. N. Teixeira Rabelo
- Instituto de Física, Universidade Federal de Goiás - UFG; Goiânia, Go 74001-970 Brazil
| | - Ladir Cândido
- Instituto de Física, Universidade Federal de Goiás - UFG; Goiânia, Go 74001-970 Brazil
| |
Collapse
|
3
|
Muz İ, Atiş M, Canko O. Stochastic search, fragmentation, electronic and reactivity properties of neutral and cationic hydrogenated Li6 clusters. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.02.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
4
|
Muz İ, Atiş M, Canko O, Yıldırım EK. Ab initio search for global minimum structures of neutral and anionic hydrogenated Li5 clusters. Chem Phys 2013. [DOI: 10.1016/j.chemphys.2013.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
5
|
KUANG XIANGJUN, WANG XINQIANG, LIU GAOBIN. A density functional study on the adsorption of hydrogen molecule onto small copper clusters. J CHEM SCI 2011. [DOI: 10.1007/s12039-011-0130-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
6
|
Gautam S, Dharamvir K, Goel N. Structural Evolution and Stability of Hydrogenated Lin (n = 1–30) Clusters: A Density Functional Study. J Phys Chem A 2011; 115:6383-9. [DOI: 10.1021/jp202493u] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Seema Gautam
- Department of Physics & Center of Advanced Studies in Physics and ‡Department of Chemistry & Center of Advanced Studies in Chemistry, Panjab University, Chandigarh-160014, India
| | - Keya Dharamvir
- Department of Physics & Center of Advanced Studies in Physics and ‡Department of Chemistry & Center of Advanced Studies in Chemistry, Panjab University, Chandigarh-160014, India
| | - Neetu Goel
- Department of Physics & Center of Advanced Studies in Physics and ‡Department of Chemistry & Center of Advanced Studies in Chemistry, Panjab University, Chandigarh-160014, India
| |
Collapse
|
7
|
Kuang XJ, Wang XQ, Liu GB. All-electron relativistic calculations on hydrogen atom adsorption onto small copper clusters. TRANSIT METAL CHEM 2010. [DOI: 10.1007/s11243-010-9402-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
8
|
Wheeler SE, Schleyer PVR, Schaefer HF. SASS: A symmetry adapted stochastic search algorithm exploiting site symmetry. J Chem Phys 2007; 126:104104. [PMID: 17362058 DOI: 10.1063/1.2646940] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A simple symmetry adapted search algorithm (SASS) exploiting point group symmetry increases the efficiency of systematic explorations of complex quantum mechanical potential energy surfaces. In contrast to previously described stochastic approaches, which do not employ symmetry, candidate structures are generated within simple point groups, such as C2, Cs, and C2v. This facilitates efficient sampling of the 3N-6 Pople's dimensional configuration space and increases the speed and effectiveness of quantum chemical geometry optimizations. Pople's concept of framework groups [J. Am. Chem. Soc. 102, 4615 (1980)] is used to partition the configuration space into structures spanning all possible distributions of sets of symmetry equivalent atoms. This provides an efficient means of computing all structures of a given symmetry with minimum redundancy. This approach also is advantageous for generating initial structures for global optimizations via genetic algorithm and other stochastic global search techniques. Application of the SASS method is illustrated by locating 14 low-lying stationary points on the cc-pwCVDZ ROCCSD(T) potential energy surface of Li5H2. The global minimum structure is identified, along with many unique, nonintuitive, energetically favorable isomers.
Collapse
Affiliation(s)
- Steven E Wheeler
- Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602, USA
| | | | | |
Collapse
|
9
|
Wheeler SE, Schaefer HF. Ionization potentials of small lithium clusters (Lin) and hydrogenated lithium clusters (LinH). J Chem Phys 2005; 122:204328. [PMID: 15945745 DOI: 10.1063/1.1906207] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present accurate ionization potentials (IPs) for small lithium clusters and hydrogenated lithium clusters (n=1-4), computed using coupled-cluster singles and doubles theory augmented with a perturbative correction for connected triple excitations [CCSD(T)] with the correlation-consistent weighted core-valence quadruple-zeta basis set (cc-pwCVQZ). In some cases the full CCSDT method has been used. Comparison of computed binding energies with experiment for the pure cationic lithium clusters reveals excellent agreement, demonstrating that previous discrepancies between computed and experimentally derived atomization energies for the corresponding neutral clusters are due to the use of an inaccurate experimental IP for Li(4). The experimental IP for Li(4) falls 0.43 eV below our theoretical adiabatic value of 4.74 eV, which should be a lower bound to the measured IP. Our recommended zero-point corrected adiabatic IPs for Li, Li(2), Li(3), Li(4), LiH, Li(2)H, Li(3)H, and Li(4)H are 5.39, 5.14, 4.11, 4.74, 7.69, 3.98, 4.69, and 4.05 eV, respectively. Zero-point vibrationally corrected CCSD(T) atomization energies per atom for Li(2) (+), Li(3) (+), Li(4) (+), LiH(+), Li(2)H(+), Li(3)H(+), and Li(4)H(+) are 0.64, 0.96, 0.90, 0.056, 1.62, 1.40, and 1.40 eV, respectively.
Collapse
Affiliation(s)
- Steven E Wheeler
- Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602, USA
| | | |
Collapse
|
10
|
Chandrakumar KRS, Ghanty TK, Ghosh SK. Relationship between Ionization Potential, Polarizability, and Softness: A Case Study of Lithium and Sodium Metal Clusters. J Phys Chem A 2004. [DOI: 10.1021/jp048522e] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K. R. S. Chandrakumar
- Theoretical Chemistry Section, Radiation Chemistry and Chemical Dynamics Division, Chemistry Group, Bhabha Atomic Research Center, Mumbai 400 085, India
| | - Tapan K. Ghanty
- Theoretical Chemistry Section, Radiation Chemistry and Chemical Dynamics Division, Chemistry Group, Bhabha Atomic Research Center, Mumbai 400 085, India
| | - Swapan K. Ghosh
- Theoretical Chemistry Section, Radiation Chemistry and Chemical Dynamics Division, Chemistry Group, Bhabha Atomic Research Center, Mumbai 400 085, India
| |
Collapse
|
11
|
Wu CH, Jones RO. Stability and structure of LinH molecules (n=3–6): Experimental and density functional study. J Chem Phys 2004; 120:5128-32. [PMID: 15267382 DOI: 10.1063/1.1648305] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The molecules Li(3)H and Li(4)H have been identified in mass-spectrometric measurements over solutions of hydrogen in liquid Li, and the gaseous equilibria of the reactions: Li(3)H+Li=Li(2)H+Li(2), Li(3)H+Li(2)=Li(2)H+Li(3), Li(3)H+Li=LiH+Li(3), Li(3)H+LiH=2Li(2)H, and Li(4)H+Li(2)=Li(3)H+Li(3) have been measured. Density functional calculations of Li(n)H molecules (n=3-6) provide structures, vibrational frequencies, ionization energies, and free energy functions of these molecules, and these are used to estimate the enthalpies of these reactions and the atomization energies of Li(3)H (119.4 kcal/mol) and Li(4)H (151.8 kcal/mol).
Collapse
Affiliation(s)
- C H Wu
- Max-Planck-Institut fur Plasmaphysik, EFDA, Boltzmannstrasse 2, D-85748 Garching, Germany
| | | |
Collapse
|
12
|
Wheeler SE, Sattelmeyer KW, Schleyer PVR, Schaefer HF. Binding energies of small lithium clusters (Lin) and hydrogenated lithium clusters (LinH). J Chem Phys 2004; 120:4683-9. [PMID: 15267328 DOI: 10.1063/1.1645242] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Large coupled cluster computations utilizing the Dunning weighted correlation-consistent polarized core-valence (cc-pwCVXZ) hierarchy of basis sets have been conducted, resulting in a panoply of internally consistent geometries and atomization energies for small Li(n) and Li(n)H (n=1-4) clusters. In contrast to previous ab initio results, we predict a monotonic increase in atomization energies per atom with increasing cluster size for lithium clusters, in accordance with the historical Knudsen-effusion measurements of Wu. For hydrogenated lithium clusters, our results support previous theoretical work concerning the relatively low atomization energy per atom for Li(2)H compared to LiH and Li(3)H. The CCSD(T)/cc-pwCVQZ atomization energies for LiH, Li(2)H, Li(3)H, and the most stable isomer of Li(4)H, including zero-point energy corrections, are 55.7, 79.6, 113.0, and 130.6 kcal/mol, respectively. The latter results are not consistent with the most recent experiments of Wu.
Collapse
Affiliation(s)
- Steven E Wheeler
- Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602, USA
| | | | | | | |
Collapse
|
13
|
Theoretical study on the geometric and electronic structure of the lithium-rich LinFn−1 (n=2–5) clusters. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0166-1280(01)00655-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
14
|
Yokoyama K, Haketa N, Tanaka H, Furukawa K, Kudo H. Ionization energies of hyperlithiated Li2F molecule and Li F−1 (n=3,4) clusters. Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(00)01109-x] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
15
|
Tanaka H, Yokoyama K, Kudo H. Ionization energies of hyperlithiated and electronically segregated isomers of Lin(OH)n−1 (n=2–5) clusters. J Chem Phys 2000. [DOI: 10.1063/1.481986] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
16
|
DAVY RANDALL, SKOUMBOURDIS EVANGELOS, KOMPANCHENKO TIMOTHY. Complexation of hydrogen by lithium: structures, energies and vibrational spectra of Li+(H2)n(n= 1–4), Li-H(H2)mand Li-H+(H2)m(m= 1–3). Mol Phys 1999. [DOI: 10.1080/00268979909482928] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
17
|
Antoine R, Rayane D, Allouche AR, Aubert-Frécon M, Benichou E, Dalby FW, Dugourd P, Broyer M, Guet C. Static dipole polarizability of small mixed sodium–lithium clusters. J Chem Phys 1999. [DOI: 10.1063/1.478455] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
18
|
Experimental and theoretical investigations of ionization potentials and structures of mixed sodium lithium clusters. Chem Phys Lett 1998. [DOI: 10.1016/s0009-2614(98)00513-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
19
|
Ab-initio study of optical response properties of nonstoichiometric lithium-hydride and sodium-fluoride clusters. Chem Phys 1997. [DOI: 10.1016/s0301-0104(97)00276-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
20
|
Reichardt D, Bonačić-Koutecký V, Fantucci P, Jellinek J. Ab initio gradient corrected density functional molecular dynamics: investigation of structural and dynamical properties of the Li8 cluster. Chem Phys Lett 1997. [DOI: 10.1016/s0009-2614(97)01019-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
21
|
Antoine R, Dugourd P, Rayane D, Benichou E, Broyer M. Metal-insulator segregation in lithium rich LinHm + clusters. J Chem Phys 1997. [DOI: 10.1063/1.474628] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
22
|
Gardet G, Rogemond F, Chermette H. Density functional theory study of some structural and energetic properties of small lithium clusters. J Chem Phys 1996. [DOI: 10.1063/1.472826] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
23
|
Antoine R, Dugourd P, Rayane D, Allouche AR, Aubert-Frécon M, Broyer M. On the optical absorption spectrum of Li2H. Chem Phys Lett 1996. [DOI: 10.1016/0009-2614(96)01027-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
24
|
Bonačić-Koutecký V, Pittner J, Koutecký J. Ab initio study of structural and optical response properties of excess-electron lithium-hydride and sodium-fluoride clusters. Chem Phys 1996. [DOI: 10.1016/0301-0104(96)00151-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
25
|
Akulin VM, Bréchignac C, Sarfati A. Quantum shell effect on dissociation energies, shapes, and thermal properties of metallic clusters from the random matrix model. PHYSICAL REVIEW LETTERS 1995; 75:220-223. [PMID: 10059639 DOI: 10.1103/physrevlett.75.220] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
26
|
Triguero L, Wahlgren U, Boussard P, Siegbahn P. Calculations of hydrogen chemisorption energies on optimized copper clusters. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)00353-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
27
|
Casassa S, Pisani C. Atomic-hydrogen interaction with metallic lithium: An ab initio embedded-cluster study. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:7805-7816. [PMID: 9977364 DOI: 10.1103/physrevb.51.7805] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
28
|
Vezin B, Dugourd P, Bordas C, Rayane D, Broyer M, Bonačic‐Koutecký V, Pittner J, Fuchs C, Gaus J, Koutecký J. Electronic properties and geometric structures of Li4H and Li9H from optical absorption spectra. J Chem Phys 1995. [DOI: 10.1063/1.468649] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
29
|
Bréchignac C, Busch H, Cahuzac P, Leygnier J. Dissociation pathways and binding energies of lithium clusters from evaporation experiments. J Chem Phys 1994. [DOI: 10.1063/1.468326] [Citation(s) in RCA: 126] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
30
|
|
31
|
Vezin B, Dugourd P, Rayane D, Labastie P, Chevaleyre J, Broyer M. Ionization potenital measurements of hydrogenated lithium clusters. Chem Phys Lett 1993. [DOI: 10.1016/0009-2614(93)80178-r] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|