1
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Lu SJ, Liang X, Zhang GS, Gao ZO, Wang K. Structural Determination and Bonding Characteristics of the Gas-Phase Ta 2Si 2̅ Anion and Its Neutral: Anion Photoelectron Spectroscopy and Theoretical Studies. J Phys Chem A 2023; 127:9797-9803. [PMID: 37944049 DOI: 10.1021/acs.jpca.3c06588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
The structures and bonding characteristics of Ta2Si2̅/0 clusters are investigated using anion photoelectron spectroscopy and quantum chemical calculations. The vertical detachment energy of the Ta2Si2̅ anion is measured to be 2.00 ± 0.08 eV using the 266 nm photon. It is found that the Ta2Si2̅ anion has three low-energy isomers with a C2v symmetric Ta-Ta dibridged structural framework, all of which contribute to the experimental photoelectron spectrum, while the Ta2Si2 neutral also has a C2v symmetric Ta-Ta dibridged structural framework. The charge-transfer from Ta atoms to Si atoms is discovered using atomic dipole moment corrected Hirshfeld analysis for the Ta2Si2̅ anion and Ta2Si2 neutral. Chemical bonding investigations show that both the Ta2Si2̅ anion and Ta2Si2 neutral have a strong covalent Ta-Ta bond, as well as σ and π double bonding patterns. Furthermore, the Ta atoms are linked together by a single 2c-2e Ta2 σ bond, whereas the Si atoms are linked together with the Ta atoms via four 2c-2e TaSi σ bonds, two 3c-2e TaSi2 σ bonds, one 4c-2e Ta2Si2 σ bond, and one 4c-2e Ta2Si2 π bond.
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Affiliation(s)
- Sheng-Jie Lu
- Department of Chemistry and Chemical Engineering, Heze University, Heze, Shandong Province 274015, China
| | - Xia Liang
- Department of Agricultural and Biological Engineering (Peony College), Heze University, Heze, Shandong Province 274015, China
| | - Guo-Song Zhang
- Department of Agricultural and Biological Engineering (Peony College), Heze University, Heze, Shandong Province 274015, China
| | - Zhao-Ou Gao
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Kang Wang
- College of Physics and Electronic Engineering, Heze University, Heze, Shandong Province 274015, China
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2
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Khanna V, Singh R, Claes P, Nguyen MT, Fielicke A, Janssens E, Lievens P, McGrady JE. Evolution of Vibrational Spectra in the Manganese-Silicon Clusters Mn 2Si n, n = 10, 12, and 13, and Cationic [Mn 2Si 13] . J Phys Chem A 2022; 126:1617-1626. [PMID: 35238570 PMCID: PMC9084549 DOI: 10.1021/acs.jpca.1c10027] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
A comparison
of DFT-computed and measured infrared spectra reveals
the ground state structures of a series of gas-phase silicon clusters
containing a common Mn2 unit. Mn2Si12 and [Mn2Si13]+ are both axially
symmetric, allowing for a clean separation of the vibrational modes
into parallel (a1) and perpendicular (e1) components.
Information about the Mn–Mn and Mn–Si bonding can be
extracted by tracing the evolution of these modes as the cluster increases
in size. In [Mn2Si13]+, where the
antiprismatic core is capped on both hexagonal faces, a relatively
simple spectrum emerges that reflects a pseudo-D6d geometry. In cases where the cluster is
more polar, either because there is no capping atom in the lower face
(Mn2Si12) or the capping atom is present but
displaced off the principal axis (Mn2Si13),
the spectra include additional features derived from vibrational modes
that are forbidden in the parent antiprism.
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Affiliation(s)
- Vaibhav Khanna
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Roshan Singh
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Pieterjan Claes
- Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
| | - Minh Tho Nguyen
- Institute for Computational Science and Technology (ICST), Quang Trung Software City, Ho Chi Minh City 53151, Vietnam
| | - André Fielicke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.,Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623, Berlin, Germany
| | - Ewald Janssens
- Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
| | - Peter Lievens
- Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
| | - John E McGrady
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
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3
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Growth pattern of doubly metal doped silicon clusters M2Sin with M2 = Mo2, Nb2, Ta2, W2, NbMo, TaW and n = 11–18. Formation of fused cages M2Si18. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2021.139229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Morgan HWT, Csizi KS, Huang YS, Sun ZM, McGrady JE. Open Shells in Endohedral Clusters: Structure and Bonding in the [Fe 2@Ge 16] 4- Anion and Comparison to Isostructural [Co 2@Ge 16] 4. J Phys Chem A 2021; 125:4578-4588. [PMID: 34014678 DOI: 10.1021/acs.jpca.1c02837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The anionic cluster [Fe2@Ge16]4- has been characterized and shown to be isostructural to the known D2h-symmetric α isomer of the cobalt analogue [Co2@Ge16]4-. Together with the known pair of compounds [Co@Ge10]3- and [Fe@Ge10]3-, the title compound completes a set of four closely related germanium clusters that allow us to explore how the metal-metal and metal-cage interactions evolve as a function of size and of the identity of the metal. The results of spin-unrestricted density functional theory (DFT) and multiconfigurational self-consistent field (MC-SCF) calculations present a consistent picture of the electronic structure where transfer of electron density from the metal to the cage is significant, particularly in the Fe clusters where the exchange stabilization of unpaired spin density is an important driving force.
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Affiliation(s)
- Harry W T Morgan
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Katja-Sophia Csizi
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Ya-Shan Huang
- Tianjin Key Lab of Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
| | - Zhong-Ming Sun
- Tianjin Key Lab of Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
| | - John E McGrady
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
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5
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Lu J, Lu QH, Li XJ. Study on the growth patterns and simulated photoelectron spectroscopy of double vanadium atoms doped silicon clusters V 2Si n(n ≤ 12) and their anions. Mol Phys 2021. [DOI: 10.1080/00268976.2020.1864042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Jun Lu
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, People’s Republic of China
| | - Qing-Hua Lu
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, People’s Republic of China
| | - Xiao-Jun Li
- School of Science, Xi’an University of Posts and Telecommunications, Xi’an, Shaanxi, People’s Republic of China
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6
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Lu SJ. Structural and electronic properties of PtnSi12 (n = 1–4) clusters: Quantum chemical calculations. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2020.113091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Lu SJ, Wang MY, Wu LS, Wu YF. Modification of geometrical and electronic structures of anionic and neutral silicon clusters by double-doped tantalum atoms. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1770883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Sheng-Jie Lu
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
- Beijing National Laboratory for Molecular Sciences, Beijing, People’s Republic of China
| | - Meng-Yuan Wang
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
| | - Li-Shun Wu
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
| | - Yi-Fang Wu
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
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8
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Lu J, Lu Q, Li X. Study on structural growth behavior and simulated photoelectron spectroscopy of Sc2Sin(0,−1) (n ≤ 8) clusters using G4(MP2) theory. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-02679-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Tan Pham H, Nguyen MT. Structure and Stability of a Trefoil Leaf Motif of Metal-Doped Silicon and Germanium Clusters: M 3@E 20 with E = Si and Ge and M = Fe, Ru, and Os. J Phys Chem A 2020; 124:8488-8495. [PMID: 32941035 DOI: 10.1021/acs.jpca.0c06362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first trefoil leaf-shaped cluster, a novel structural motif, was discovered by quantum chemical computations using density functional theory methods for both binary M3@E20 silicon and germanium clusters in which a metallic M3 cycle is encapsulated within a D3h Si20 or Ge20 cage. The triatomic transition metal Fe3, Ru3, and Os3 cycles exhibit a suitable size to be placed inside both Si and Ge cages and satisfy electronic conditions, which thermodynamically stabilize the mixed clusters. Stabilizing orbital interactions between the M3 cycle and D3h E20 cage crucially contributes to the high stability of the resulting M3@E20 trefoil cluster. The novel trefoil leaf-shaped clusters can be used as building units to create different nanoassemblies.
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Affiliation(s)
- Hung Tan Pham
- Computational Chemistry Research Group, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam.,Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
| | - Minh Tho Nguyen
- Computational Chemistry Research Group, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam.,Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
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10
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Lu SJ, Wu YF. The aromatic fullerene-like silicon cage with 12 Si5 pentagons stabilized by a V3 unit. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-02636-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Farooq U, Naz S, Xu HG, Yang B, Xu XL, Zheng WJ. Recent progress in theoretical and experimental studies of metal-doped silicon clusters: Trend among elements of periodic table. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213095] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Pham HT, Dang CTP, Trung NT, Ngan VT. Transformation between Hexagonal Prism and Antiprism of the Singly and Doubly Cr-Doped Ge 12 Clusters. J Phys Chem A 2019; 123:10721-10729. [PMID: 31756105 DOI: 10.1021/acs.jpca.9b08052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Structural transformation is a unique characteristic of atomic clusters, but it turns out very different from cluster to cluster. This theoretical study proves that the isomeric transformation between hexagonal prism and hexagonal antiprism is found for the doubly doped Cr2Ge12 cluster but not for singly doped CrGe12 cluster. We confirm that the ground state of CrGe12 is the distorted hexagonal prism C2h at the 3Bg triplet state instead of various shapes predicted in the previous studies. Upon comparison between the estimation at the B3P86/6-311+G(d) level of theory and the detachment energies measured by photoelectron spectroscopy, hexagonal antiprismatic shape is identified as the most stable isomer of the Cr2Ge12 cluster and it is easy to transform to the hexagonal prism-a less stable isomer by the rotation of the hexagonal rings. That is the first evidence for the structural transformation between a hexagonal prism and an antiprism of the germanium clusters, referring to the ability of Ge-based clusters in the formation of tubular geometry by doping Cr atoms. All the low-energy isomers of both Cr-doped germanium clusters have high magnetic moments. Interestingly, there is a tuning in magnetic properties of Cr2Ge12 from the ferromagnetism of the lowest-lying hexagonal antiprism to the ferrimagnetism of the higher-energy hexagonal prism. The stronger Cr-Cr bond and stronger interaction between the Cr2 moiety and the antiprism cage are accounted for by the higher stability of the hexagonal antiprismatic isomer.
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Affiliation(s)
- Hung Tan Pham
- Department of Chemistry , KU Leuven , 3000 Leuven , Belgium
| | - Cam-Tu Phan Dang
- Laboratory of Computational Chemistry and Modelling (LCCM), Department of Chemistry , Quy Nhon University , 170 An Duong Vuong , Quy Nhon City , Vietnam
| | - Nguyen Tien Trung
- Laboratory of Computational Chemistry and Modelling (LCCM), Department of Chemistry , Quy Nhon University , 170 An Duong Vuong , Quy Nhon City , Vietnam
| | - Vu Thi Ngan
- Laboratory of Computational Chemistry and Modelling (LCCM), Department of Chemistry , Quy Nhon University , 170 An Duong Vuong , Quy Nhon City , Vietnam
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13
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Lu SJ. Transition from exohedral to endohedral geometries of anionic and neutral B 4Si n (n = 4-15) clusters: quantum chemical calculations. Phys Chem Chem Phys 2019; 21:26154-26165. [PMID: 31750509 DOI: 10.1039/c9cp05044b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The growth patterns of anionic and neutral B4Sin (n = 4-15) clusters are investigated by using density functional theory (DFT) calculations combined with particle swarm optimization (CALYPSO) software. The geometries of anionic and neutral B4Sin clusters transform from exohedral to endohedral structures with the increasing cluster sizes. The B4Si14- anion size is critical for forming B4-endohedral structures for anionic clusters, while the B4Si15 neutral size is the threshold size for forming B4-endohedral structures for neutral clusters. Both anionic and neutral B4Sin (n = 4-15) clusters are primarily dominated by prism-based or bipyramid-based geometries. The global minima of anionic and neutral B4Sin clusters adopt different geometrical structures, except for anionic and neutral B4Si10. The binding energies, second-order energy differences, and incremental binding energies of B4Sin- clusters show an odd-even alternation with the growing number of Si atoms. The B atoms in B4Sin-/0 exhibit B-B single bonding and B[double bond, length as m-dash]B double bonding properties. The B atoms are found to carry more negative charges due to charge transfer from Sin frameworks to B atoms. Interestingly, the B4Si4- anion adopts a C2h symmetric bicapped tetragonal bipyramid with σ plus π double bonding characters and has the highest relative stability among the anionic clusters. The bonding interactions in B4Si4- are in the order of B-B > B-Si > Si-Si.
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Affiliation(s)
- Sheng-Jie Lu
- Department of Chemistry and Chemical Engineering, Heze University, Heze, Shandong Province 274015, China
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14
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Lu SJ, Wu LS, Yin BH, Lin F, Chao MY. Au2Si20: a honeycomb-shaped structure with short Au−Au single bond at the centre coordinated by twelve Si5 pentagons and reinforced by strong Au−Si interactions and aromaticity. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1692152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Sheng-Jie Lu
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
- Beijing National Laboratory for Molecular Sciences, Beijing, People’s Republic of China
| | - Li-Shun Wu
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
| | - Bao-Hua Yin
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
| | - Feng Lin
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
| | - Ming-Yong Chao
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
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15
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Jahn-Teller and Pseudo Jahn-Teller Effects: Influences on the Electronic Structures of Small Transition, Main Group and Mixed Metal Clusters. Struct Chem 2019. [DOI: 10.1007/s11224-019-01448-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Lu SJ. Dynamical fluxionality, multiplicity of geometrical forms, and electronic properties of anionic, neutral, and cationic TanSi12 (n = 1–3) clusters: quantum chemical calculations. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1682209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Sheng-Jie Lu
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
- Beijing National Laboratory for Molecular Sciences, Beijing, People’s Republic of China
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17
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Tan Pham H, Nguyen MT. Formation of the M 2B 18q Teetotum Boron Clusters with 4d and 5d Transition Metals M = Rh, Pd, Ir, and Pt. J Phys Chem A 2019; 123:8170-8178. [PMID: 31483672 DOI: 10.1021/acs.jpca.9b04078] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the present theoretical study using DFT computations, we successfully designed a series of boron clusters possessing a teetotum shape stabilized upon metal doping. The resulting M2B18 teetotum geometry emerges as a general structural motif for the B18 boron cluster doped by either two 4d and 5d transition metal atoms. Doping of two different metal atoms also conserves the teetotum motif such as in the mixed RhPdB18+ and IrPtB18+ clusters. A bonding analysis points out that each dimeric metal unit enjoys several stabilizing orbital interactions with an idealized B18 tubular moiety and thereby establish a bimetallic configuration of [σ(σ5s-B18)]2 [π(π4d-B18)]4 [σ(σ4d-B18)]2 [δ(δ4d-B18)]4 [σ*(σ4d-B18)]2 [π*4d]4 [σ(σ*4d-B18)]2 [δ*4d]4 for 4d metals and of [σ(σ6s-B18)]2 [π(π5d-B18)]4 [σ(σ5d-B18)]2 [δ(δ5d-B18)]4 [σ*(σ5d-B18)]2 [π*5d]4 [σ(σ*5d-B18)]2 [δ*5d]4 for 5d metal atoms for 24 electrons. All the M2B18q teetotum structures considered behave as aromatic compounds whose character is indicated by the strongly diatropic current density.
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Affiliation(s)
- Hung Tan Pham
- Institute for Computational Science and Technology (ICST) , 700000 Ho Chi Minh City , Vietnam.,Department of Chemistry , KU Leuven , B-3001 Leuven , Belgium
| | - Minh Tho Nguyen
- Computational Chemistry Research Group , Ton Duc Thang University , 700000 Ho Chi Minh City , Vietnam.,Faculty of Applied Sciences , Ton Duc Thang University , 700000 Ho Chi Minh City , Vietnam
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18
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Lu SJ, Wu LS, Yin BH, Lin F, Chao MY. Quantum chemical calculation studies of Pd nSi 12 ( n = 1–3) clusters: effects of doping Pd atoms on the structural and electronic properties. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1656350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Sheng-Jie Lu
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
| | - Li-Shun Wu
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
| | - Bao-Hua Yin
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
| | - Feng Lin
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
| | - Ming-Yong Chao
- Department of Chemistry and Chemical Engineering, Heze University, Heze, People’s Republic of China
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19
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Exploring the structural and electronic properties of double-Fe atom-doped Si20 cluster by quantum chemical calculations. Theor Chem Acc 2019. [DOI: 10.1007/s00214-019-2438-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Lu SJ. Exploring the structural evolution and electronic properties of medium-sized Nb2Sin−/0 (n = 13–20) clusters by density functional theory calculations. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.10.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Lu SJ, Wu LS, Lin F. Probing the geometric structures and bonding properties in Nb2Si20−/0 clusters by density functional theory calculations. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.08.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Lu SJ, Wu LS, Lin F. Probing the structures and properties of Ti2Si20−/0 clusters by density functional theory calculations. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.07.048] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Pham-Ho MP, Tan Pham H, Nguyen MT. Boron Teetotum: Metallic [Ti(B 6C xN y)] q and Bimetallic [Ti 2(B 6C xN y)] q Nine-Membered Heterocycles with x + y = 3 and -1 ≤ q ≤ 3. J Phys Chem A 2018; 122:6196-6205. [PMID: 29965766 DOI: 10.1021/acs.jpca.8b02713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We investigated the geometry, stability, and aromaticity of a series of singly and doubly titanium-doped boron clusters. Ti dopants bring in planar cyclic form with a nine-membered boron ring B9- and B93- and C and N isoelectronic derivatives where perfectly planar B6N3, B6CN2, B6C2N, and B6C3 heterorings are coordinated with one and two Ti atoms. The presence of both C and N atoms induces bimetallic heterocycles while Ti2B9q clusters are not stable in cyclic form. Doubly Ti doped clusters have the shape of a teetotum toy. High thermodynamic stability of these bimetallic boron heterocycles, that are global equilibrium structures of corresponding systems, can be understood as the result of a stabilizing overlap between bonding and antibonding MOs of Ti2 with different eigenstates of B6C xN y cycles. Both C and N elements, which are more electronegative than the B atom, also enjoy the formation of planar nine-membered ring via classical 2c-2e bonding, rather than occupancy of high coordination position. A double aromaticity feature which comprises both σ and π aromaticity is supported by magnetic responses of electron density within a planar cycle. Such an aromatic character is also in line with the classical electron count for both sets of delocalized σ and π electron systems.
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Affiliation(s)
- My-Phuong Pham-Ho
- Faculty of Chemical Engineering , Ho Chi Minh City University of Technology , Ho Chi Minh City 700000 , Vietnam
| | - Hung Tan Pham
- Institute for Computational Science and Technology , Ho Chi Minh City 700000 , Vietnam
| | - Minh Tho Nguyen
- Computational Chemistry Research Group , Ton Duc Thang University , Ho Chi Minh City 700000 , Vietnam.,Faculty of Applied Sciences , Ton Duc Thang University , Ho Chi Minh City 700000 , Vietnam.,Department of Chemistry , KU Leuven , Celestijnenlaan 200F , B-3001 Leuven , Belgium
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25
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Lu SJ, Xu XL, Xu HG, Zheng WJ. Structural evolution and bonding properties of Au2Sin−/0 (n = 1–7) clusters: Anion photoelectron spectroscopy and theoretical calculations. J Chem Phys 2018; 148:244306. [DOI: 10.1063/1.5029870] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Sheng-Jie Lu
- Department of Chemistry and Chemical Engineering, Heze University, Heze, Shandong Province 274015, China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xi-Ling Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong-Guang Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei-Jun Zheng
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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Pham HT, Dang TTM, Van Duong L, Tam NM, Nguyen MT. B 3@Si 12+: strong stabilizing effects of a triatomic cyclic boron unit on tubular silicon clusters. Phys Chem Chem Phys 2018; 20:7588-7592. [PMID: 29493696 DOI: 10.1039/c8cp00380g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Remarkably strong effects of the aromatic B3 cycle in stabilizing tubular silicon clusters were observed for the first time. The doped cluster B3@Si12+ presents a novel structural motif for silicon clusters in which a B3 cycle is encapsulated into a (6 × 2) Si12 prism giving rise to a high symmetry stable tubular structure (D3h). A large amount of electron density is transferred to the boron cycle, and the B3δ- unit not only retains a delocalized bonding pattern within the Si12 prism but also enables a two-fold aromaticity for the resulting silicon double ring. This double ring can be used as a building block to make longer nanotubes.
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Affiliation(s)
- Hung Tan Pham
- Institute for Computational Science and Technology (ICST), Ho Chi Minh City, Vietnam
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Pham HT, Nguyen MT. Formation of a bi-rhodium boron tube Rh2B18 and its great CO2 capture ability. Phys Chem Chem Phys 2018; 20:26072-26082. [DOI: 10.1039/c8cp03584a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The geometries, bonding and abilities for CO2 capture of the doubly rhodium-doped boron cluster Rh2B18 are presented.
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Affiliation(s)
- Hung Tan Pham
- Institute for Computational Science and Technology (ICST)
- Ho Chi Minh City
- Vietnam
| | - Minh Tho Nguyen
- Computational Chemistry Research Group
- Ton Duc Thang University
- Ho Chi Minh City
- Vietnam
- Faculty of Applied Sciences
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Pham HT, Nguyen MT. Theoretical Investigation of Metallic Heterofullerenes of Silicon and Germanium Mixed with Phosphorus and Arsenic Atoms M-A8E6, A = Si, Ge; E = P, As; and M = Cr, Mo, W. J Phys Chem A 2017; 121:5056-5066. [DOI: 10.1021/acs.jpca.7b04631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hung Tan Pham
- Computational Chemistry
Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Minh Tho Nguyen
- Computational Chemistry
Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Department of Chemistry, KU Leuven, Celestijnenlaan
200F, B-3001 Leuven, Belgium
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Pham HT, Nguyen HT, Nguyen MT. Mn@B3N3Si8
+: a stable singlet manganese-doped hetero-atom-mixed silicon fullerene. Struct Chem 2017. [DOI: 10.1007/s11224-017-0973-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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