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Liu C, Popov IA, Chen Z, Boldyrev AI, Sun Z. Aromaticity and Antiaromaticity in Zintl Clusters. Chemistry 2018; 24:14583-14597. [DOI: 10.1002/chem.201801715] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 05/18/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and Engineering Rare Earth and Inorganic Functional Materials Center Nankai University Tianjin 300350 P. R. China
- China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Zhongfang Chen
- Department of Chemistry Institute for Functional Nanomaterials University of Puerto Rico San Juan USA
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Zhong‐Ming Sun
- School of Materials Science and Engineering Rare Earth and Inorganic Functional Materials Center Nankai University Tianjin 300350 P. R. China
- China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
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2
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Loukhovitski BI, Torokhov SA, Loukhovitskaya EE, Sharipov AS. DFT study of small aluminum and boron hydrides: isomeric composition and physical properties. Struct Chem 2018. [DOI: 10.1007/s11224-017-1000-5 https:/doi.org/10.1007/s11224-017-1000-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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3
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DFT study of small aluminum and boron hydrides: isomeric composition and physical properties. Struct Chem 2017. [DOI: 10.1007/s11224-017-1000-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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4
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5
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Calvo F, Li Y, Kiawi DM, Bakker JM, Parneix P, Janssens E. Nonlinear effects in infrared action spectroscopy of silicon and vanadium oxide clusters: experiment and kinetic modeling. Phys Chem Chem Phys 2015. [DOI: 10.1039/c5cp02304a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nonlinear effects in infrared action spectroscopy are experimentally quantified and successfully modeled for different inorganic clusters.
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Affiliation(s)
- Florent Calvo
- Laboratoire Interdisciplinaire de Physique
- Rue de La Piscine
- Campus Saint Martin d'Hères
- 38000 Grenoble
- France
| | - Yejun Li
- Laboratory of Solid State Physics and Magnetism
- KU Leuven
- B-3001 Leuven
- Belgium
| | - Denis M. Kiawi
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- 6525 ED Nijmegen
- The Netherlands
| | - Joost M. Bakker
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- 6525 ED Nijmegen
- The Netherlands
| | - Pascal Parneix
- Institut des Sciences Moléculaires d'Orsay
- UMR CNRS 8214
- Université Paris Sud 11
- F91405 Orsay Cedex
- France
| | - Ewald Janssens
- Laboratory of Solid State Physics and Magnetism
- KU Leuven
- B-3001 Leuven
- Belgium
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6
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Yong Y, Hao X, Li C, Li X, Li T, Cui H, Lv S. Density functional studies of small silicon clusters adsorbed on graphene. RSC Adv 2015. [DOI: 10.1039/c5ra02081f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The structural and electronic properties of small Sin clusters (n = 1–6, 10) adsorbed on graphene are studied by use of density functional theory within periodic boundary conditions.
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Affiliation(s)
- Yongliang Yong
- College of Physics and Engineering
- Henan University of Science and Technology
- Luoyang 471003
- People's Republic of China
- Department of Physics
| | - Xiping Hao
- College of Physics and Engineering
- Henan University of Science and Technology
- Luoyang 471003
- People's Republic of China
| | - Chao Li
- College of Physics and Engineering
- Henan University of Science and Technology
- Luoyang 471003
- People's Republic of China
| | - Xiaohong Li
- College of Physics and Engineering
- Henan University of Science and Technology
- Luoyang 471003
- People's Republic of China
| | - Tongwei Li
- College of Physics and Engineering
- Henan University of Science and Technology
- Luoyang 471003
- People's Republic of China
| | - Hongling Cui
- College of Physics and Engineering
- Henan University of Science and Technology
- Luoyang 471003
- People's Republic of China
| | - Shijie Lv
- College of Physics and Engineering
- Henan University of Science and Technology
- Luoyang 471003
- People's Republic of China
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7
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A topological pattern for understanding the structures of boranes and borane analog compounds. Struct Chem 2014. [DOI: 10.1007/s11224-014-0488-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Li Y, Lyon JT, Woodham AP, Fielicke A, Janssens E. The Geometric Structure of Silver-Doped Silicon Clusters. Chemphyschem 2014; 15:328-36. [DOI: 10.1002/cphc.201300944] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Indexed: 11/06/2022]
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9
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Heats of formation and thermochemical parameters of small silicon clusters and their ions, with n=2–13. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.08.051] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Direct visualization of reversible dynamics in a Si6 cluster embedded in a graphene pore. Nat Commun 2013; 4:1650. [DOI: 10.1038/ncomms2671] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Accepted: 02/26/2013] [Indexed: 11/09/2022] Open
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11
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Osorio E, Sergeeva AP, Santos JC, Tiznado W. Theoretical study of the Si(5-n)(BH)n2- and Na(Si(5-n)(BH)n)- (n = 0-5) systems. Phys Chem Chem Phys 2012; 14:16326-30. [PMID: 23132234 DOI: 10.1039/c2cp42674a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The potential energy surfaces of the Na(Si(5-n)(BH)(n))(-) and Si(5-n)(BH)(n)(2-) (n = 0-5) systems have been explored in detail. We established that all the global minimum structures of anionic and dianionic systems can be obtained by substitution of one or more silicon atoms of the global minima of NaSi(5)(-) and Si(5)(2-) for B-H units. The conservation of the overall structure upon isoelectronic substitution was shown to be due to the preservation of the chemical bonding pattern. Theoretical VDEs were calculated for all of the sodiated Na(Si(5-n)(BH)(n))(-) (n = 0-5) systems to facilitate their experimental detection.
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Affiliation(s)
- Edison Osorio
- Universidad Andres Bello, Facultad Ciencias Exactas, Departamento de Química, Av. República 275, Santiago, Chile.
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12
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Tam NM, Ngan VT, de Haeck J, Bhattacharyya S, Thuy Le H, Janssens E, Lievens P, Tho Nguyen M. Singly and doubly lithium doped silicon clusters: Geometrical and electronic structures and ionization energies. J Chem Phys 2012; 136:024301. [DOI: 10.1063/1.3672164] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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De Haeck J, Bhattacharyya S, Le HT, Debruyne D, Tam NM, Ngan VT, Janssens E, Nguyen MT, Lievens P. Ionization energies and structures of lithium doped silicon clusters. Phys Chem Chem Phys 2012; 14:8542-50. [DOI: 10.1039/c2cp40465f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Karamanis P, Marchal R, Carbonniére P, Pouchan C. Doping-enhanced hyperpolarizabilities of silicon clusters: A global ab initio and density functional theory study of Si10 (Li, Na, K)n (n = 1, 2) clusters. J Chem Phys 2011; 135:044511. [DOI: 10.1063/1.3615499] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Zhang J, Lu WC, Zang QJ, Zhao LZ, Wang CZ, Ho KM. An ab initio calculation study of silicon and carbon binary clusters C7Si(n) (n = 1-7). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:205305. [PMID: 21540510 DOI: 10.1088/0953-8984/23/20/205305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Binary C(7)Si(n) (n = 1-7) clusters are studied using density functional calculations at the level of B3LYP/6-311G(d). Lowest-energy structures have been determined theoretically and their properties such as binding energies, second differences in energy and highest-occupied and lowest-unoccupied molecular orbital gaps have been analyzed. It is found that the lowest-energy structures of the C(7)Si(n) (n = 1-7) clusters change from linear to planar when n ≥ 3, and in the planar structures C atoms prefer to form five- and six-membered rings surrounded by extra Si atoms in the form of the C(2)Si units.
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Affiliation(s)
- Jing Zhang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, Jilin, People's Republic of China
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16
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Zdetsis AD. Designing novel Sn-Bi, Si-C and Ge-C nanostructures, using simple theoretical chemical similarities. NANOSCALE RESEARCH LETTERS 2011; 6:362. [PMID: 21711875 PMCID: PMC3211452 DOI: 10.1186/1556-276x-6-362] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Accepted: 04/27/2011] [Indexed: 05/31/2023]
Abstract
A framework of simple, transparent and powerful concepts is presented which is based on isoelectronic (or isovalent) principles, analogies, regularities and similarities. These analogies could be considered as conceptual extensions of the periodical table of the elements, assuming that two atoms or molecules having the same number of valence electrons would be expected to have similar or homologous properties. In addition, such similar moieties should be able, in principle, to replace each other in more complex structures and nanocomposites. This is only partly true and only occurs under certain conditions which are investigated and reviewed here. When successful, these concepts are very powerful and transparent, leading to a large variety of nanomaterials based on Si and other group 14 elements, similar to well known and well studied analogous materials based on boron and carbon. Such nanomaterias designed in silico include, among many others, Si-C, Sn-Bi, Si-C and Ge-C clusters, rings, nanowheels, nanorodes, nanocages and multidecker sandwiches, as well as silicon planar rings and fullerenes similar to the analogous sp2 bonding carbon structures. It is shown that this pedagogically simple and transparent framework can lead to an endless variety of novel and functional nanomaterials with important potential applications in nanotechnology, nanomedicine and nanobiology. Some of the so called predicted structures have been already synthesized, not necessarily with the same rational and motivation. Finally, it is anticipated that such powerful and transparent rules and analogies, in addition to their predictive power, could also lead to far-reaching interpretations and a deeper understanding of already known results and information.
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Scharfe S, Kraus F, Stegmaier S, Schier A, Fässler TF. Zintl-Ionen, Käfigverbindungen und intermetalloide Cluster der Elemente der 14. und 15. Gruppe. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201001630] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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18
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Scharfe S, Kraus F, Stegmaier S, Schier A, Fässler TF. Zintl Ions, Cage Compounds, and Intermetalloid Clusters of Group 14 and Group 15 Elements. Angew Chem Int Ed Engl 2011; 50:3630-70. [PMID: 21455921 DOI: 10.1002/anie.201001630] [Citation(s) in RCA: 364] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2010] [Indexed: 11/10/2022]
Affiliation(s)
- Sandra Scharfe
- Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching/München, Germany
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Tai TB, Nguyen MT. A Stochastic Search for the Structures of Small Germanium Clusters and Their Anions: Enhanced Stability by Spherical Aromaticity of the Ge10 and Ge12(2-) Systems. J Chem Theory Comput 2011; 7:1119-30. [PMID: 26606360 DOI: 10.1021/ct1006482] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Investigations on germanium clusters in the neutral, anionic, and dianion states Gen(x) (n = 2-12 and x = 0, -1, -2) are performed using quantum chemical calculations with the B3LYP functional and the coupled-cluster singles and doubles [CCSD(T)] methods, in conjunction with the 6-311+G(d) basis set. An improved stochastic method is implemented for searching the low-lying isomers of clusters. Comparison of our results with previous reports on germanium clusters shows the efficiency of the search method. The Ge8 system is presented in detail. The anionic clusters Gen(-/2-) are studied theoretically and systematically for the first time, and their energetics are in good agreement with available experiments. The clusters Ge10, Ge10(2-), and Ge12(2-) are, in their ground state, characterized by large highest occupied molecular orbital-lowest unoccupied molecular orbital gaps, high vertical and adiabatic detachment energies, and substantial average binding energies. The enhanced stability of these magic clusters can consistently be rationalized using the jellium electron shell model and the spherical aromatic character.
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Affiliation(s)
- Truong Ba Tai
- Department of Chemistry, and LMCC-Mathematical Modeling and Computational Science Center, Katholieke Universiteit Leuven , B-3001 Leuven, Belgium
| | - Minh Tho Nguyen
- Department of Chemistry, and LMCC-Mathematical Modeling and Computational Science Center, Katholieke Universiteit Leuven , B-3001 Leuven, Belgium.,Institute for Computational Science and Technology , Thu Duc, Ho Chi Minh City, Vietnam
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20
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Zdetsis AD. Novel pentagonal silicon rings and nanowheels stabilized by flat pentacoordinate carbon(s). J Chem Phys 2011; 134:094312. [DOI: 10.1063/1.3557680] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Peppernick SJ, Gunaratne KDD, Sayres SG, Castleman AW. Photoelectron imaging of small silicon cluster anions, Sin− (n=2–7). J Chem Phys 2010; 132:044302. [DOI: 10.1063/1.3299271] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Zdetsis AD. Rationalizing and functionalizing stannaspherene: Very stable stannaspherene “alloys”. J Chem Phys 2009; 131:224310. [DOI: 10.1063/1.3267046] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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23
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Zdetsis AD. Silicon−Bismuth and Germanium−Bismuth Clusters of High Stability. J Phys Chem A 2009; 113:12079-87. [DOI: 10.1021/jp905409m] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Marchal R, Carbonnière P, Pouchan C. A global search algorithm of minima exploration for the investigation of low lying isomers of clusters from density functional theory-based potential energy surfaces: The example of Sin (n=3,15) as a test case. J Chem Phys 2009; 131:114105. [DOI: 10.1063/1.3216382] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Affiliation(s)
- E. N. Koukaras
- Department of Physics, University of Patras, GR-26500 Patras, Greece
| | - A. D. Zdetsis
- Department of Physics, University of Patras, GR-26500 Patras, Greece
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26
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Zdetsis AD. Success and pitfalls of the Sin−2C2H2–C2Bn−2Hn isolobal analogy: Depth and breadth of the boron connection. J Chem Phys 2009; 130:064303. [PMID: 19222274 DOI: 10.1063/1.3071260] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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27
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Lyon JT, Gruene P, Fielicke A, Meijer G, Janssens E, Claes P, Lievens P. Structures of Silicon Cluster Cations in the Gas Phase. J Am Chem Soc 2009; 131:1115-21. [DOI: 10.1021/ja807518y] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jonathan T. Lyon
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Laboratory of Solid State Physics and Magnetism & INPAC-Institute of Nanoscale Physics and Chemistry, Katholieke Universiteit Leuven, Belgium
| | - Philipp Gruene
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Laboratory of Solid State Physics and Magnetism & INPAC-Institute of Nanoscale Physics and Chemistry, Katholieke Universiteit Leuven, Belgium
| | - André Fielicke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Laboratory of Solid State Physics and Magnetism & INPAC-Institute of Nanoscale Physics and Chemistry, Katholieke Universiteit Leuven, Belgium
| | - Gerard Meijer
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Laboratory of Solid State Physics and Magnetism & INPAC-Institute of Nanoscale Physics and Chemistry, Katholieke Universiteit Leuven, Belgium
| | - Ewald Janssens
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Laboratory of Solid State Physics and Magnetism & INPAC-Institute of Nanoscale Physics and Chemistry, Katholieke Universiteit Leuven, Belgium
| | - Pieterjan Claes
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Laboratory of Solid State Physics and Magnetism & INPAC-Institute of Nanoscale Physics and Chemistry, Katholieke Universiteit Leuven, Belgium
| | - Peter Lievens
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Laboratory of Solid State Physics and Magnetism & INPAC-Institute of Nanoscale Physics and Chemistry, Katholieke Universiteit Leuven, Belgium
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Li X, Wang H, Grubisic A, Wang D, Bowen KH, Jackson M, Kiran B. Heteroborane analogs of silicon clusters: experimental and theoretical studies on Bi2Si5 and Bi2Si5(-). J Chem Phys 2008; 129:134309. [PMID: 19045092 DOI: 10.1063/1.2988727] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We have investigated the electronic structure of anionic and neutral Bi(2)Si(5) by means of anion photoelectron spectroscopy and density functional calculations. Both the experiments and calculations reveal that the Bi(2)Si(5)(-) anion prefers to adopt a distorted trigonal-bipyramidal structure with Bi(2) bridges. Following the isolobal analogy between divalent Si and B-H group, we show that both neutral Bi(2)Si(5) and neutral Bi(2)B(5)H(5) adopt similar pentagonal-bipyrmidal geometries and have analogous orbital energy patterns.
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Affiliation(s)
- Xiang Li
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, USA
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Zdetsis AD. The Boron Connection: A Parallel Description of Aromatic, Bonding, and Structural Characteristics of Hydrogenated Silicon−Carbon Clusters and Isovalent Carboranes. Inorg Chem 2008; 47:8823-9. [PMID: 18754583 DOI: 10.1021/ic800838b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Zdetsis AD. High-Stability Hydrogenated Silicon−Carbon Clusters: A Full Study of Si2C2H2 in Comparison to Si2C2, C2B2H4, And Other Similar Species. J Phys Chem A 2008; 112:5712-9. [PMID: 18510305 DOI: 10.1021/jp801961e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Zdetsis AD. A new class of silicon-carbon clusters: a full study of the hydrogenated SinC2H2, n=3,4,5, clusters in comparison with their isoelectronic carboranes C2BnHn+2. J Chem Phys 2008; 128:184305. [PMID: 18532810 DOI: 10.1063/1.2911694] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The structural and electronic characteristics of the Si(n)C(2)H(2), n=3,4,5, clusters are studied by ab initio calculations based on coupled cluster and density functional theory using the hybrid B3LYP functional. It is demonstrated that all three clusters are structurally and electronically homologous to the corresponding isoelectronic organometallic carboranes C(2)B(n)H(n+2). This homology, which is in full agreement with the analogy of Si(6) (2-) and B(6)H(6) (2-) demonstrated recently by the author [J. Chem. Phys. 127, 014314 (2007)], includes not only the ground states but also the lower-lying isomers as well. These lowest lying isomers can be obtained by ortho, para, and meta substitutions from the corresponding Si(n) (2-), n=3,4,5, dianions. The energetic ordering of the low-lying isomers is in full agreement with the known valence and topological charge stability rules developed for carboranes. The hydrogenated clusters are much more stable than their nonhydrogenated counterparts. It is suggested that Si(3)C(2)H(2), Si(4)C(2)H(2), and Si(5)C(2)H(2), which can be probably found in interstellar space, are special examples of a general class of silicon-carbon clusters of the form Si(n)C(2)H(2), with analogous properties and similarities to the corresponding carboranes C(2)B(n)H(n+2). It is furthermore illustrated that the lowest energy structures of the Si(n)C(2) clusters can be obtained through a systematic and straightforward procedure from the Si(n)C(2)H(2) clusters. The present results could hopefully make possible the exploitation of the rich borane and carborane chemistry for the design and development of novel silicon and silicon-carbon composite nanomaterials.
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Shao N, Bulusu S, Zeng XC. Search for lowest-energy structure of Zintl dianion Si122−, Ge122−, and Sn122−. J Chem Phys 2008; 128:154326. [DOI: 10.1063/1.2897918] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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