1
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Cui LJ, Dong X, Liu YQ, Pan S, Cui ZH. Transition Metal Behavior of Heavier Alkaline Earth Elements in Doped Monocyclic and Tubular Boron Clusters. Inorg Chem 2024; 63:653-660. [PMID: 38146259 DOI: 10.1021/acs.inorgchem.3c03536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Quantum chemical calculations are carried out to design highly symmetric-doped boron clusters by employing the transition metal behavior of heavier alkaline earth (Ae = Ca, Sr, and Ba) metals. Following an electron counting rule, a set of monocyclic and tubular boron clusters capped by two heavier Ae metals were tested, which leads to the highly symmetric Ae2B8, Ae2B18, and Ae2B30 clusters as true minima on the potential energy surface having a monocyclic ring, two-ring tubular, and three-ring tubular boron motifs, respectively. Then, a thorough global minimum (GM) structural search reveals that a monocyclic B8 ring capped with two Ae atoms is indeed a GM for Ca2B8 and Ba2B8, while for Sr2B8 it is a low-lying isomer. Similarly, the present search also unambiguously shows the most stable isomers of Ae2B18 and Ae2B30 to be highly symmetric two- and three-ring tubular boron motifs, respectively, capped with two Ae atoms on each side of the tube. In these Ae-doped boron clusters, in addition to the electrostatic interactions, a substantial covalent interaction, specifically the bonding occurring between (n - 1)d orbitals of Ae and delocalized orbitals of boron motifs, provides the essential driving force behind their highly symmetrical structures and overall stability.
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Affiliation(s)
- Li-Juan Cui
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130023, China
| | - Xue Dong
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130023, China
| | - Yu-Qian Liu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130023, China
| | - Sudip Pan
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130023, China
| | - Zhong-Hua Cui
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130023, China
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), Jilin University, Changchun 130023, China
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2
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Li SX, Yang YJ, Chen DL. PB 12+ and P 2B 12+/0/-: The Novel B 12 Cage Doped by Nonmetallic P Atoms. ACS OMEGA 2023; 8:44831-44838. [PMID: 38046297 PMCID: PMC10688167 DOI: 10.1021/acsomega.3c06002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/26/2023] [Accepted: 11/06/2023] [Indexed: 12/05/2023]
Abstract
A new kind of nonmetallic atom-doped boron cluster is described herein theoretically. When a phosphorus atom is added to the B12 motif and loses an electron, a novel B12 cage is obtained, composed of two B3 rings at both ends and one B6 ring in the middle, forming a triangular bifrustum. Interestingly, this B12 cage is formed by three B7 units joined together from three directions at an angle of 120°. When two P atoms are added to the B12 motif, this novel B12 cage is also obtained, and two P atoms are attached to the B3 rings at both ends of the triangular bifrustum, forming a triangular bipyramid (Johnson solid). Amazingly, the global minimums of neutral, monocationic, and monoanionic P2B12+/0/- have the same cage structure with a D3h symmetry; this is the smallest boron cage with the same structure. The P atom has five valence electrons, according to adaptive natural density partitioning bonding analyses of cage PB12+ and P2B12, in addition to one lone pair, the other three electrons of the P atom combine with an electron of each B atom on the B3 ring to form three 2c-2e σ bonds and form three electron sharing bonds with B atoms through covalent interactions, stabilizing the B12 cage. The calculated photoelectron spectra can be compared with future experimental values and provide a theoretical basis for the identification and confirmation of PnB12- (n = 1-2).
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Affiliation(s)
- Shi-Xiong Li
- School of Physics and Electronic Science, Guizhou Education University, Guiyang 550018, China
| | - Yue-Ju Yang
- School of Physics and Electronic Science, Guizhou Education University, Guiyang 550018, China
| | - De-Liang Chen
- School of Physics and Electronic Science, Guizhou Education University, Guiyang 550018, China
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3
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Ao MZ, Ma YY, Mu YW, Li SD. Perfect cubic metallo-borospherenes TM 8B 6 (TM = Ni, Pd, Pt) as superatoms following the 18-electron rule. NANOSCALE ADVANCES 2023; 5:6688-6694. [PMID: 38024293 PMCID: PMC10662020 DOI: 10.1039/d3na00551h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 10/15/2023] [Indexed: 12/01/2023]
Abstract
Transition-metal (TM)-doped metallo-borospherenes exhibit unique structures and bonding in chemistry which have received considerable attention in recent years. Based on extensive global minimum searches and first-principles theory calculations, we predict herein the first and smallest perfect cubic metallo-borospherenes Oh TM8B6 (TM = Ni (1), Pd (2), Pt (3)) and Oh Ni8B6- (1-) which contain eight equivalent TM atoms at the vertexes of a cube and six quasi-planar tetra-coordinate face-capping boron atoms on the surface. Detailed canonical molecular orbital and adaptive natural density partitioning bonding analyses indicate that Oh TM8B6 (1/2/3) as superatoms possess nine completely delocalized 14c-2e bonds following the 18-electron principle (1S21P61D10), rendering spherical aromaticity and extra stability to the complex systems. Furthermore, Ni8B6 (1) can be used as building blocks to form the three-dimensional metallic binary crystal NiB (4) (Pm3̄m) in a bottom-up approach which possesses a typical CsCl-type structure with an octa-coordinate B atom located exactly at the center of the cubic unit cell. The IR, Raman, UV-vis and photoelectron spectra of the concerned clusters are computationally simulated to facilitate their experimental characterization.
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Affiliation(s)
- Mei-Zhen Ao
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University Taiyuan 030006 P. R. China
- Fenyang College of Shanxi Medical University Fenyang 032200 China
| | | | - Yue-Wen Mu
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University Taiyuan 030006 P. R. China
| | - Si-Dian Li
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University Taiyuan 030006 P. R. China
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4
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Han PF, Sun Q, Zhai HJ. Boron-Based Inverse Sandwich V 2B 7- Cluster: Double π/σ Aromaticity, Metal-Metal Bonding, and Chemical Analogy to Planar Hypercoordinate Molecular Wheels. Molecules 2023; 28:4721. [PMID: 37375276 DOI: 10.3390/molecules28124721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/09/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Inverse sandwich clusters composed of a monocyclic boron ring and two capping transition metal atoms are interesting alloy cluster systems, yet their chemical bonding nature has not been sufficiently elucidated to date. We report herein on the theoretical prediction of a new example of boron-based inverse sandwich alloy clusters, V2B7-, through computational global-minimum structure searches and quantum chemical calculations. This alloy cluster has a heptatomic boron ring as well as a perpendicular V2 dimer unit that penetrates through the ring. Chemical bonding analysis suggests that the inverse sandwich cluster is governed by globally delocalized 6π and 6σ frameworks, that is, double 6π/6σ aromaticity following the (4n + 2) Hückel rule. The skeleton B-B σ bonding in the cluster is shown not to be strictly Lewis-type two-center two-electron (2c-2e) σ bonds. Rather, these are quasi-Lewis-type, roof-like 4c-2e V-B2-V σ bonds, which amount to seven in total and cover the whole surface of inverse sandwich in a truly three-dimensional manner. Theoretical evidence is revealed for a 2c-2e Lewis σ single bond within the V2 dimer. Direct metal-metal bonding is scarce in inverse sandwich alloy clusters. The present inverse sandwich alloy cluster also offers a new type of electronic transmutation in physical chemistry, which helps establish an intriguing chemical analogy between inverse sandwich clusters and planar hypercoordinate molecular wheels.
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Affiliation(s)
- Peng-Fei Han
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Qiang Sun
- Center for Applied Physics and Technology, School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Hua-Jin Zhai
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
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Zhang T, Zhang M, Lu XQ, Yan QQ, Zhao XN, Li SD. Sc@B 28-, Ti@B 28, V@B 28+, and V@B 292-: Spherically Aromatic Endohedral Seashell-like Metallo-Borospherenes. Molecules 2023; 28:molecules28093892. [PMID: 37175301 PMCID: PMC10179789 DOI: 10.3390/molecules28093892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/18/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023] Open
Abstract
Transition-metal-doped boron nanoclusters exhibit unique structures and bonding in chemistry. Using the experimentally observed seashell-like borospherenes C2 B28-/0 and Cs B29- as ligands and based on extensive first-principles theory calculations, we predict herein a series of novel transition-metal-centered endohedral seashell-like metallo-borospherenes C2 Sc@B28- (1), C2 Ti@B28 (2), C2 V@B28+ (3), and Cs V@B292- (4) which, as the global minima of the complex systems, turn out to be the boron analogues of dibenzenechromium D6h Cr(C6H6)2 with two B12 ligands on the top and bottom interconnected by four or five corner boron atoms on the waist and one transition-metal "pearl" sandwiched at the center in between. Detailed molecular orbital, adaptive natural density partitioning (AdNDP), and iso-chemical shielding surface (ICSS) analyses indicate that, similar to Cr(C6H6)2, these endohedral seashell-like complexes follow the 18-electron rule in bonding patterns (1S21P61D10), rendering spherical aromaticity and extra stability to the systems.
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Affiliation(s)
- Ting Zhang
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
- Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, China
| | - Min Zhang
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Xiao-Qin Lu
- Shanxi Center for Testing of Functional Agro-Products, Shanxi Agricultural University, Taiyuan 030031, China
| | - Qiao-Qiao Yan
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Xiao-Ni Zhao
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Si-Dian Li
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
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Ai LY, Guo JJ, Wang J, Zhao HY, Liu Y. Re12C80: A pentagonal hexecontahedron molecule. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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7
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Ao MZ, Zhang F, Ma YY, Mu YW, Li SD. Heptacoordinate transition-metal-decorated metallo-borospherenes and multiple-helix metallo-boronanotubes. NANOSCALE 2023; 15:2377-2383. [PMID: 36648220 DOI: 10.1039/d2nr05486h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The recent discovery of lanthanide-metal-decorated metallo-borospherenes LM3B18- (LM = La, Tb) marks the onset of a new class of boron-metal binary nanomaterials. Using the experimentally observed or theoretically predicted borospherenes as ligands and based on extensive first-principles theory calculations, we predict herein a series of novel chiral metallo-borospherenes C2 Ni6 ∈ B39- (1), C1 Ni6 ∈ B41+ (3), C2 Ni6 ∈ B422+ (4), C2 Ni6 ∈ B42 (5), and C2 Ni8 ∈ B56 (6) as the global minima of the systems decorated with quasi-planar heptacoordinate Ni (phNi) centers in η7-B7 heptagons on the cage surfaces, which are found to be obviously better favoured in coordination energies than hexacoordinate Ni centers in previously reported D2d Ni6 ∈ B40 (2). Detailed bonding analyses indicate that these phNi-decorated metallo-borospherenes follow the σ + π double delocalization bonding pattern, with two effective (d-p)σ coordination bonds formed between each phNi and its η7-B7 ligand, rendering spherical aromaticity and extra stability to the systems. The structural motif in elongated axially chiral Ni6 ∈ B422+ (4), Ni6 ∈ B42 (5), and Ni8 ∈ B56 (6) can be extended to form the metallic phNi-decorated boron double chain (BDC) double-helix Ni4 ∈ B28 (2, 0) (P4̄m2) (8), triple-helix Ni6 ∈ B42 (3, 0) (P3̄m1) (9), and quadruple-helix Ni8 ∈ B56 (4, 0) (P4mm) (10) metallo-boronanotubes, which can be viewed as quasi-multiple-helix DNAs composed of interconnected BDCs decorated with phNi centers in η7-B7 heptagons on the tube surfaces in the atomic ratio of Ni : B = 1 : 7.
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Affiliation(s)
- Mei-Zhen Ao
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P.R. China
- Fenyang College of Shanxi Medical University, Fenyang 032200, China.
| | - Fei Zhang
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P.R. China
| | - Yuan-Yuan Ma
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P.R. China
| | - Yue-Wen Mu
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P.R. China
| | - Si-Dian Li
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P.R. China
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8
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Wang YJ, Feng LY, Yan M, Zhai HJ. Be 3B 11- cluster: a dynamically fluxional beryllo-borospherene. Phys Chem Chem Phys 2023; 25:2846-2852. [PMID: 36621801 DOI: 10.1039/d2cp04948a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The beryllium-doped Be3B11- cluster has two nearly isoenergetic isomers, adopting the smallest trihedral spherical geometries with a boron single-chain skeleton. The B11 skeleton in the global minimum (C2v, 1A1) comprises three conjoined boron rings (one B8/two B7) on the waist, sharing two B3 equilateral triangles at the top and bottom, respectively. However, the local minimum (Cs, 1A') has one deformed B4 pyramid at the top. The drastic structural transformation of B11 skeletons from perfectly planar B11 clusters mainly profited from robust electrostatic interaction between Be atoms and B11 skeletons. The dynamic simulations suggest that two species can interconvert via a novel mechanism, that is "triangle-pyramid-triangle", which facilitates the free migration of boron atoms in the B11 skeleton, thereby showing the fascinating dynamic fluxionality. The chemical bonding analyses reveal that the B11 skeleton is covered by two types of delocalized π bonds in an orthogonal direction, which leads to its spherical aromaticity.
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Affiliation(s)
- Ying-Jin Wang
- Department of Chemistry, Xinzhou Teachers University, Xinzhou 034000, China.
| | - Lin-Yan Feng
- Department of Chemistry, Xinzhou Teachers University, Xinzhou 034000, China.
| | - Miao Yan
- Department of Chemistry, Xinzhou Teachers University, Xinzhou 034000, China.
| | - Hua-Jin Zhai
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China.
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9
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Dong X, Liu Y, Liu X, Pan S, Cui Z, Merino G. Be
4
B
12
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: A Covalently Bonded Archimedean Beryllo‐Borospherene. Angew Chem Int Ed Engl 2022; 61:e202208152. [DOI: 10.1002/anie.202208152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Xue Dong
- Institute of Atomic and Molecular Physics Jilin University Changchun 130023 China
| | - Yu‐qian Liu
- Institute of Atomic and Molecular Physics Jilin University Changchun 130023 China
| | - Xin‐bo Liu
- Institute of Atomic and Molecular Physics Jilin University Changchun 130023 China
| | - Sudip Pan
- Fachbereich Chemie, Philipps-Universitt Marburg Hans-Meerwein-Straße 35043 Marburg Germany
| | - Zhong‐hua Cui
- Institute of Atomic and Molecular Physics Jilin University Changchun 130023 China
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education) Jilin University Changchun 130023 China
| | - Gabriel Merino
- Departamento de Física Aplicada Centro de Investigación y de Estudios Avanzados Unidad Mérida km 6 Antigua carretera a Progreso, Apdo. Postal 73, Cordemex 97310 Mérida, Yuc México
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10
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Dong X, Liu YQ, Liu XB, Pan S, Cui ZH, Merino G. Be4B12+: A Covalently Bonded Archimedean Beryllo‐Borospherene. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xue Dong
- Jilin University Institute of Atomic and Molecular Physics CHINA
| | - Yu-qian Liu
- Jilin University Institute of Atomic and Molecular Physics CHINA
| | - Xin-bo Liu
- Jilin University Institute of Atomic and Molecular Physics CHINA
| | - Sudip Pan
- University of Marburg: Philipps-Universitat Marburg Fachbereich Chemie Descending Number of Current Assignments GERMANY
| | - Zhong-hua Cui
- Jilin University Institute of Atomic and Molecular Physics CHINA
| | - Gabriel Merino
- Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional Fisica Aplicada Km. 6 Antigua carretera a Progreso Apdo. Postal 73, Cordemex 97310 Merida MEXICO
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11
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Yan L. Large B 7 Triangles in Hollow Spherical Trihedral Metallo-borospherenes and Their Endohedral Complexes of B 20TM n (TM = Sc, Y; n = 3, 4): a Theoretical Characterization. Inorg Chem 2022; 61:10652-10660. [DOI: 10.1021/acs.inorgchem.2c00624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lijuan Yan
- College of Electronics & Information Engineering, Guangdong Ocean University, Zhanjiang, Guangdong 524088, People’s Republic of China
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12
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Barroso J, Pan S, Merino G. Structural transformations in boron clusters induced by metal doping. Chem Soc Rev 2022; 51:1098-1123. [PMID: 35029622 DOI: 10.1039/d1cs00747e] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
In the last decades, experimental techniques in conjunction with theoretical analyses have revealed the surprising structural diversity of boron clusters. Although the 2D to 3D transition thresholds are well-established, there is no certainty about the factors that determine the geometry adopted by these systems. The structural transformation induced by doping usually yields a minimum energy structure with a boron skeleton entirely different from that of the bare cluster. This review summarizes those clusters no larger than 40 boron atoms where one or two dopants show a radical transformation of the structure. Although the structures of these systems are not easy to predict, they often adopt familiar shapes such as umbrella-like, wheel, tubular, and cages in various cases.
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Affiliation(s)
- Jorge Barroso
- Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados, Unidad Mérida, km 6 Antigua carretera a Progreso, Apdo. Postal 73, Cordemex 97310, Mérida, Yuc., Mexico.
| | - Sudip Pan
- Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados, Unidad Mérida, km 6 Antigua carretera a Progreso, Apdo. Postal 73, Cordemex 97310, Mérida, Yuc., Mexico.
| | - Gabriel Merino
- Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados, Unidad Mérida, km 6 Antigua carretera a Progreso, Apdo. Postal 73, Cordemex 97310, Mérida, Yuc., Mexico.
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Ao MZ, Lu XQ, Mu YW, Zan WY, Li SD. La@[La5&B30]0/−/2−: endohedral trihedral metallo-borospherenes with spherical aromaticity. Phys Chem Chem Phys 2022; 24:3918-3923. [DOI: 10.1039/d1cp05644a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Extensive first-principles theory calculations predict the perfect endohedral metallo-borospherene D3h La@[La5&B30] (1) and its monoanion Cs La@[La5&B30]− (2) and dianion D3h La@[La5&B30]2− (3) which appear to be spherically aromatic in nature.
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Affiliation(s)
- Mei-Zhen Ao
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P. R. China
- Fenyang College of Shanxi Medical University, Fenyang 032200, China
| | - Xiao-Qin Lu
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P. R. China
| | - Yue-Wen Mu
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P. R. China
| | - Wen-Yan Zan
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P. R. China
| | - Si-Dian Li
- Nanocluster Laboratory, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P. R. China
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14
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Zhang Y, Lu XQ, Yan M, Li SD. Perfect Spherical Tetrahedral Metallo-Borospherene Ta 4B 18 as a Superatom Following the 18-Electron Rule. ACS OMEGA 2021; 6:10991-10996. [PMID: 34056252 PMCID: PMC8153900 DOI: 10.1021/acsomega.1c00828] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 04/02/2021] [Indexed: 05/27/2023]
Abstract
Cage-like metallo-borospherenes exhibit unique structures and bonding. Inspired by the newly reported smallest spherical trihedral metallo-borospherene D 3h Ta3B12 - (1), which contains two equivalent B3 triangles interconnected by three B2 units on the cage surface, we present herein a first-principles theory prediction of the perfect spherical tetrahedral metallo-borospherene T d Ta4B18 (2), which possesses four equivalent B3 triangles interconnected by six B atoms, with four equivalent nonacoordinate Ta centers in four η9-B9 rings as integrated parts of the cage surface. As the well-defined global minimum of the neutral, Ta4B18 (2) possesses four 10c-2e B9(π)-Ta(dσ) and eight 10c-2e B9(π)-Ta(dδ) coordination bonds evenly distributed over four Ta-centered Ta@B9 nonagons, with the remaining 18 valence electrons in nine 22c-2e totally delocalized bonds following the 18-electron principle (1S21P61D10) of a superatom. Such a bonding pattern renders spherical aromaticity to the tetrahedral complex, which can be used as building blocks to form the face-centered cubic crystal Ta4B15 (3). The IR, Raman, and UV-vis spectra of Ta4B18 (2) are theoretically simulated to facilitate its future experimental characterizations.
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Affiliation(s)
- Yu Zhang
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Xiao-Qin Lu
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Miao Yan
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Si-Dian Li
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
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15
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Cage-like La 4B 24 and Core-Shell La 4B 290/+/- : perfect spherically aromatic tetrahedral metallo-borospherenes. J Mol Model 2021; 27:130. [PMID: 33884513 DOI: 10.1007/s00894-021-04739-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 03/15/2021] [Indexed: 10/21/2022]
Abstract
Cage-like and core-shell metallo-borospherenes exhibit interesting structures and bonding. Based on extensive global searches and first-principles theory calculations, we predict herein the perfect tetrahedral cage-like Td La4B24 (1) and core-shell Td La4B29 (2), Td La4B29+ (3), and Td La4B29- (4) which all possess the same geometrical symmetry as their carbon fullerene counterpart Td C28, with four equivalent interconnected B6 triangles on the cage surface and four nona-coordinate La centers in four conjoined η9-B9 rings. In these tetra-La-doped boron complexes, La4[B@B4@B24]0/+/- (2/3/4) in the structural motif of 1 + 4 + 28 contain a B-centered tetrahedral Td B@B4 core in a La-decorated tetrahedral La4B24 shell, with the negatively charged tetra-coordinate B- at the center being the boron analog of tetrahedral C in Td CH4 (B- ~ C). Detailed orbital and bonding analyses indicate that these Td lanthanide boride complexes are spherically aromatic in nature with a universal La--B9 (d-p) σ and (d-p) δ coordination bonding pattern. The IR, Raman, and UV-Vis or photoelectron spectra of these novel metallo-borospherenes are computationally simulated to facilitate their spectral characterizations. Graphical abstract.
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16
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Wang Z, Du Q, Park SJ. TM 4B 180/− (TM = Hf, Ta, W, Re, Os): new structure construction with TM doped B wheel units. RSC Adv 2021; 11:18605-18611. [PMID: 35480935 PMCID: PMC9033464 DOI: 10.1039/d1ra02525b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/09/2021] [Indexed: 11/21/2022] Open
Abstract
The lowest energy structure of Ta4B18 shows a conflicting aromaticity and is assembled from four planar molecular Ta@B9 units.
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Affiliation(s)
- Zhen Wang
- Key Laboratory of Materials Modification by Laser
- Ion and Electron Beams (Dalian University of Technology)
- Ministry of Education
- Dalian 116024
- China
| | - Qiuying Du
- Key Laboratory of Materials Modification by Laser
- Ion and Electron Beams (Dalian University of Technology)
- Ministry of Education
- Dalian 116024
- China
| | - Sung Jin Park
- Key Laboratory of Materials Modification by Laser
- Ion and Electron Beams (Dalian University of Technology)
- Ministry of Education
- Dalian 116024
- China
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Zhao XY, Yan M, Wei Z, Li SD. Donor-acceptor duality of the transition-metal-like B 2 core in core-shell-like metallo-borospherenes La 3&[B 2@B 17] - and La 3&[B 2@B 18] . RSC Adv 2020; 10:34225-34230. [PMID: 35519037 PMCID: PMC9056772 DOI: 10.1039/d0ra06769e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 09/09/2020] [Indexed: 12/04/2022] Open
Abstract
Transition-metal doping induces dramatic structural changes and leads to earlier planar → tubular → spherical → core–shell-like structural transitions in boron clusters. Inspired by the newly discovered spherical trihedral metallo-borospherene D3h La3&B18− (1) (Chen, et al., Nat. Commun., 2020, 11, 2766) and based on extensive first-principles theory calculations, we predict herein the first and smallest core–shell-like metallo-borospherenes C2v La3&[B2@B17]− (2) and D3h La3&[B2@B18]− (3) which contain a transition-metal-like B2 core at the cage center with unique donor–acceptor duality in La3&Bn− spherical trihedral shells (n = 17, 18). Detailed energy decomposition and bonding analyses indicate that the B2 core in these novel complexes serves as a π-donor in the equatorial direction mainly to coordinate three La atoms on the waist and a π/σ-acceptor in the axial direction mainly coordinated by two B6 triangles on the top and bottom. These highly stable core–shell complexes appear to be spherically aromatic in nature in bonding patterns. The IR, Raman, and photoelectron spectra of 2 and 3 are computationally simulated to facilitate their spectroscopic characterizations. The smallest core–shell-like metallo-borospherenes C2v La3&[B2@B17]− and D3h La3&[B2@B18]− have been predicted at first-principles theory level which contain a transition-metal-like B2 core with unique donor–acceptor duality.![]()
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Affiliation(s)
- Xiao-Yun Zhao
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University Taiyuan 030006 China .,Department of Applied Chemistry, Yuncheng University Yuncheng 044000 China
| | - Miao Yan
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University Taiyuan 030006 China
| | - Zhihong Wei
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University Taiyuan 030006 China
| | - Si-Dian Li
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University Taiyuan 030006 China
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