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Li HF, Wang HQ, Zhang JM, Qin LX, Zheng H, Zhang YH. Investigation of Structures, Stabilities, and Electronic and Magnetic Properties of Niobium Carbon Clusters Nb 7C n (n = 1-7). Molecules 2024; 29:1692. [PMID: 38675512 PMCID: PMC11051814 DOI: 10.3390/molecules29081692] [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: 02/26/2024] [Revised: 04/03/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
The geometrical structures, relative stabilities, and electronic and magnetic properties of niobium carbon clusters, Nb7Cn (n = 1-7), are investigated in this study. Density functional theory (DFT) calculations, coupled with the Saunders Kick global search, are conducted to explore the structural properties of Nb7Cn (n = 1-7). The results regarding the average binding energy, second-order difference energy, dissociation energy, HOMO-LUMO gap, and chemical hardness highlight the robust stability of Nb7C3. Analysis of the density of states suggests that the molecular orbitals of Nb7Cn primarily consist of orbitals from the transition metal Nb, with minimal involvement of C atoms. Spin density and natural population analysis reveal that the total magnetic moment of Nb7Cn predominantly resides on the Nb atoms. The contribution of Nb atoms to the total magnetic moment stems mainly from the 4d orbital, followed by the 5p, 5s, and 6s orbitals.
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Affiliation(s)
- Hui-Fang Li
- College of Engineering, Huaqiao University, Quanzhou 362021, China
| | - Huai-Qian Wang
- College of Engineering, Huaqiao University, Quanzhou 362021, China
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Jia-Ming Zhang
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Lan-Xin Qin
- College of Engineering, Huaqiao University, Quanzhou 362021, China
| | - Hao Zheng
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Yong-Hang Zhang
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
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Xie B, Wang HQ, Li HF, Zhang JM, Zeng JK, Mei XJ, Zhang YH, Zheng H, Qin LX. Making Sense of the Growth Behavior of Ultra-High Magnetic Gd 2-Doped Silicon Clusters. Molecules 2023; 28:5071. [PMID: 37446733 DOI: 10.3390/molecules28135071] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/24/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
The growth behavior, stability, electronic and magnetic properties of the Gd2Sin- (n = 3-12) clusters are reported, which are investigated using density functional theory calculations combined with the Saunders 'Kick' and the Artificial Bee Colony algorithm. The lowest-lying structures of Gd2Sin- (n = 3-12) are all exohedral structures with two Gd atoms face-capping the Sin frameworks. Results show that the pentagonal bipyramid (PB) shape is the basic framework for the nascent growth process of the present clusters, and forming the PB structure begins with n = 5. The Gd2Si5- is the potential magic cluster due to significantly higher average binding energies and second order difference energies, which can also be further verified by localized orbital locator and adaptive natural density partitioning methods. Moreover, the localized f-electron can be observed by natural atomic orbital analysis, implying that these electrons are not affected by the pure silicon atoms and scarcely participate in bonding. Hence, the implantation of these elements into a silicon substrate could present a potential alternative strategy for designing and synthesizing rare earth magnetic silicon-based materials.
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Affiliation(s)
- Biao Xie
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Huai-Qian Wang
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
- College of Engineering, Huaqiao University, Quanzhou 362021, China
| | - Hui-Fang Li
- College of Engineering, Huaqiao University, Quanzhou 362021, China
| | - Jia-Ming Zhang
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Jin-Kun Zeng
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Xun-Jie Mei
- College of Engineering, Huaqiao University, Quanzhou 362021, China
| | - Yong-Hang Zhang
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Hao Zheng
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Lan-Xin Qin
- College of Engineering, Huaqiao University, Quanzhou 362021, China
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Maneri AH, Krishnamurty S, Joshi K. Understanding the Stability of an Unprecedented Si-Be Bond within Quantum Confinement. ACS OMEGA 2023; 8:14814-14822. [PMID: 37125089 PMCID: PMC10134223 DOI: 10.1021/acsomega.3c01133] [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: 02/20/2023] [Accepted: 03/29/2023] [Indexed: 05/03/2023]
Abstract
As of today, the Si-Be bond remains underexplored in the literature, and therefore its anomalous behavior continues to be an unsolved puzzle to date. Therefore, the present study aims at evaluating the integrity of an unprecedented Si-Be bond within quantum confinement. To accomplish this, first-principles-based calculation are performed on Be-doped silicon clusters with atomic sizes 6, 7, and 10. Silicon clusters are sequentially doped with one, two, and three Be atoms, and their thermal response is registered in the temperature range of 200-1500 K, which discloses several research findings. During the course of the simulations, the clusters face various thermal events such as solid cluster phase, rapid structural metamorphosis, and fragmentation. Si-Be nanoalloy clusters are noted to be thermally stable at lower temperatures (200-700 K); however, they begins to disintegrate earlier at a temperature as low as 800 K. This lower stability is attributed to the weak nature of Si and Be heteroatomic interactions, which is corroborated from the structural and electronic property analysis of the doped clusters. In addition to this, the performance of Be-doped clusters at finite temperatures is also compared with the thermal response of two other popular systems, viz., C- and B-doped silicon clusters.
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Affiliation(s)
- Asma Harun Maneri
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory (CSIR-NCL), Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Gaziabad 201002, India
| | - Sailaja Krishnamurty
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory (CSIR-NCL), Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Gaziabad 201002, India
- ,
| | - Krati Joshi
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory (CSIR-NCL), Pune 411008, India
- ,
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Xie B, Wang HQ, Li HF, Zeng JK. Structural and electronic properties of Ln2Si6q: (Sm, Eu, Yb; q = 0, −1) clusters. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2022.111782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Zhang JM, Wang HQ, Li HF, Xie B, Han C, Jiang LY. Insights into the structure and growth of Lu-doped germanium clusters: comparing density functional theory calculations with photoelectron spectroscopy experiments. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2131644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Jia-Ming Zhang
- College of Engineering, Huaqiao University, Quanzhou, People’s Republic of China
| | - Huai-Qian Wang
- College of Engineering, Huaqiao University, Quanzhou, People’s Republic of China
| | - Hui-Fang Li
- College of Engineering, Huaqiao University, Quanzhou, People’s Republic of China
| | - Biao Xie
- College of Information Science and Engineering, Huaqiao University, Xiamen, People’s Republic of China
| | - Chao Han
- College of Engineering, Huaqiao University, Quanzhou, People’s Republic of China
| | - Long-Ying Jiang
- College of Engineering, Huaqiao University, Quanzhou, People’s Republic of China
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Fan YW, Kong XY, Zhao LJ, Wang HQ, Li HF, Zhan Q, Xie B, Xu HG, Zheng WJ. A joint experimental and theoretical study on structural, electronic, and magnetic properties of MnGe n - (n = 3-14) clusters. J Chem Phys 2021; 154:204302. [PMID: 34241172 DOI: 10.1063/5.0053414] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A systematic structure and property investigation of MnGen - (n = 3-14) was conducted by means of density functional theory coupled with mass-selected anion photoelectron spectroscopy. This combined theoretical and experimental study allows global minimum and coexistence structures to be identified. It is found that the pentagonal bipyramid shape is the basic framework for the nascent growth process of MnGen - (n = 3-10), and from n = 10, the endohedral structures can be found. For n = 12, the anion MnGe12 - cluster probably includes two isomers: a major isomer with a puckered hexagonal prism geometry and a minor isomer with a distorted icosahedron geometry. Specifically, the puckered hexagonal prism isomer follows the Wade-Mingos rules and can be suggested as a new kind of superatom with the magnetic property. Furthermore, the results of adaptive natural density partitioning and deformation density analyses suggest a polar covalent interaction between Ge and Mn for endohedral clusters of MnGe12 -. The spin density and natural population analysis indicate that MnGen - clusters have high magnetic moments localized on Mn. The density of states diagram visually shows the significant spin polarization for endohedral structures and reveals the weak interaction between the Ge 4p orbital and the 4s, 3d orbitals of Mn.
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Affiliation(s)
- Yi-Wei Fan
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Xiang-Yu Kong
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Li-Juan Zhao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Huai-Qian Wang
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Hui-Fang Li
- College of Engineering, Huaqiao University, Quanzhou 362021, China
| | - Qian Zhan
- College of Engineering, Huaqiao University, Quanzhou 362021, China
| | - Biao Xie
- College of Information Science and Engineering, Huaqiao University, Xiamen 361021, 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
| | - 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
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