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Wang K, Zhao J, Guo J, Chen S, Zhao Y, Chen J, Wang Y, Liu L, Wang C, Liu Z. Magnetic properties of CrMnGe n (n = 3-20) clusters. J Comput Chem 2024; 45:2318-2324. [PMID: 38872590 DOI: 10.1002/jcc.27448] [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: 03/21/2024] [Revised: 05/19/2024] [Accepted: 05/30/2024] [Indexed: 06/15/2024]
Abstract
Due to the potential applications in next-generation micro/nano electronic devices and functional materials, magnetic germanium (Ge)-based clusters are receiving increasing attention. In this work, we reported the structures, electronic and magnetic properties of CrMnGen with sizes n = 3-20. Transition metals (TMs) of Cr and Mn tend to stay together and be surrounded by Ge atoms. Small sized clusters with n ≤ 8 prefer to adopt bipyramid-based structures as the motifs with the excess Ge atoms absorbed on the surface. Starting from n = 9, the structure with one TM atom interior appears and persists until n = 16, and for larger sizes n = 17-20, the two TM atoms are full-encapsulated by Ge atoms to form endohedral structures. The Hirshfeld population analyses show that Cr atom always acts as the electron donor, while Mn atom is always the acceptor except for sizes 3 and 6. The average binding energies of these clusters increase with cluster size n, sharing a very similar trend as that of CrMnSin (n = 4-20) clusters, which indicates that it is favorable to form large-sized clusters. CrMnGen (n = 6, 13, 16, 19, and 20) clusters prefer to exhibit ferromagnetic Cr-Mn coupling, while the remaining clusters are ferrimagnetic.
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Affiliation(s)
- Kai Wang
- Henan Engineering Research Centre of Building-Photovoltaics, School of Mathematics and Physics, Henan University of Urban Construction, Pingdingshan, China
| | - Jun Zhao
- Henan Engineering Research Centre of Building-Photovoltaics, School of Mathematics and Physics, Henan University of Urban Construction, Pingdingshan, China
| | - Junji Guo
- Henan Engineering Research Centre of Building-Photovoltaics, School of Mathematics and Physics, Henan University of Urban Construction, Pingdingshan, China
| | - Shanbao Chen
- Henan Engineering Research Centre of Building-Photovoltaics, School of Mathematics and Physics, Henan University of Urban Construction, Pingdingshan, China
| | - Yapeng Zhao
- Henan Engineering Research Centre of Building-Photovoltaics, School of Mathematics and Physics, Henan University of Urban Construction, Pingdingshan, China
| | - Jiaye Chen
- Henan Engineering Research Centre of Building-Photovoltaics, School of Mathematics and Physics, Henan University of Urban Construction, Pingdingshan, China
| | - Yarui Wang
- Henan Engineering Research Centre of Building-Photovoltaics, School of Mathematics and Physics, Henan University of Urban Construction, Pingdingshan, China
| | - Le Liu
- Henan Engineering Research Centre of Building-Photovoltaics, School of Mathematics and Physics, Henan University of Urban Construction, Pingdingshan, China
| | - Chaoyong Wang
- Henan Engineering Research Centre of Building-Photovoltaics, School of Mathematics and Physics, Henan University of Urban Construction, Pingdingshan, China
| | - Zhiqing Liu
- Henan Engineering Research Centre of Building-Photovoltaics, School of Mathematics and Physics, Henan University of Urban Construction, Pingdingshan, China
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Zhang Y, Yang J, Dong C, Li X. Introducing hafnium to atomically small- and medium-sized tin clusters (HfSn n0/-/2- (n = 4-17)): A computational investigation of geometrical and growth behavior, spectral properties, electronic configuration and thermochemistry. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 315:124277. [PMID: 38636426 DOI: 10.1016/j.saa.2024.124277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/30/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024]
Abstract
The global and local minimum configurations of single Hf atom doped Sn clusters are conducted via density function theory (DFT) combined with artificial bee colony algorithm (ABCluster). Furthermore, DFT method is also used to systematically investigate on their structural growth evolution, spectral and electronic information, thermochemical properties following the size of tin clusters doped Hf atom. Structurally, the ground-state geometries of neutral, anion and di-anion are discovered that, from n = 4, the number of Sn atoms in cluster, HfSnn0/-/2- adsorb additional Sn atom on the prior architecture one by one until forming n = 17 for HfSnn-10/-, as well as forming n = 16 for HfSnn-12-. And for the HfSn110/- and HfSn102- as beginning the species veritably develop sealed architectures. The strongest vibrational modes of sealed nanoclusters are stretching modes of Hf atom with infrared actives and breathing modes of the Sn cage framework with Raman actives, respectively. The natural population analysis (NPA) elucidates the stronger relationship between the Hf atoms and the tin frameworks in sealed clusters than that in unsealed clusters. The results of thermochemical properties, molecular orbital shell (MOs), adaptive natural density partitioning (AdNDP) and ultraviolet visible absorption spectrum (UV-Vis) indicate that, the HfSn16 with high symmetry of Td exhibits thermochemical stability and optoelectronic properties, which is utilized potentially as zero-dimensional unit of self-assembling fluorescent nanomaterials.
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Affiliation(s)
- Yanpeng Zhang
- College of Chemical Engineering, Inner Mongolia University of Technology, and Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, Hohhot 010051, People's Republic of China
| | - Jucai Yang
- College of Chemical Engineering, Inner Mongolia University of Technology, and Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, Hohhot 010051, People's Republic of China; College of Resources and Environmental Engineering, Inner Mongolia University of Technology, Hohhot 010051, People's Republic of China
| | - Caixia Dong
- College of Resources and Environmental Engineering, Inner Mongolia University of Technology, Hohhot 010051, People's Republic of China.
| | - Xiaojun Li
- College of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, Shaanxi, People's Republic of China.
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3
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Yang X, Liu N, Zhao J, Zhou S. Luminescence properties of endohedrally doped group-IV clusters. J Chem Phys 2024; 160:234305. [PMID: 38899686 DOI: 10.1063/5.0214967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Accepted: 06/03/2024] [Indexed: 06/21/2024] Open
Abstract
Endohedrally doped clusters form a large category of cage clusters, with unique structures, diverse elemental compositions, and highly tunable electronic structures and physisochemical properties. They have been widely achieved in laboratory and may serve as functional building blocks for assembling new supermolecular structures and devices. In this paper, for the first time, we disclosed the luminescence properties of endohedrally doped group-IV clusters by time-dependent density functional theory calculations. A total of 64 cage clusters have been explored in terms of stability, emission wavelength, and the energy difference between the first excited singlet and triplet states. The key geometric and electronic factors governing the photophysical properties of these cage clusters were unveiled, to provide crucial insights for crafting atomically precise nanoclusters for optical and optoelectronic applications.
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Affiliation(s)
- Xiaowei Yang
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
| | - Nanshu Liu
- Beijing Key Laboratory of Optoelectronic Functional Materials and Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing 100872, People's Republic of China
- Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education), Renmin University of China, Beijing 100872, China
| | - Jijun Zhao
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
- Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University, Guangzhou 510006, China
- Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China
| | - Si Zhou
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
- Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University, Guangzhou 510006, China
- Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China
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Zhang JM, Wang HQ, Li HF, Mei XJ, Zeng JK, Qin LX, Zheng H, Zhang YH, Jiang KL, Zhang B, Wu WH. Aromatic and magnetic properties in a series of heavy rare earth-doped Ge 6 cluster anions. J Comput Chem 2024; 45:1087-1097. [PMID: 38243618 DOI: 10.1002/jcc.27317] [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: 12/07/2023] [Revised: 01/03/2024] [Accepted: 01/10/2024] [Indexed: 01/21/2024]
Abstract
A series of pentagonal bipyramidal anionic germanium clusters doped with heavy rare earth elements,REGe 6 - (RE = Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu), have been identified at the PBE0/def2-TZVP level using density functional theory (DFT). Our findings reveal that the centrally doped pentagonal ring structure demonstrates enhanced stability and heightened aromaticity due to its uniform bonding characteristics and a larger charge transfer region. Through natural population analysis and spin density diagrams, we observed a monotonic decrease in the magnetic moment from Gd to Yb. This is attributed to the decreasing number of unpaired electrons in the 4f orbitals of the heavy rare earth atoms. Interestingly, the system doped with Er atoms showed lower stability and anti-aromaticity, likely due to the involvement of the 4f orbitals in bonding. Conversely, the systems doped with Gd and Tb atoms stood out for their high magnetism and stability, making them potential building blocks for rare earth-doped semiconductor materials.
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Affiliation(s)
- Jia-Ming Zhang
- College of Information Science and Engineering, Huaqiao University, Xiamen, China
| | - Huai-Qian Wang
- College of Information Science and Engineering, Huaqiao University, Xiamen, China
- College of engineering, Huaqiao University, Quanzhou, China
| | - Hui-Fang Li
- College of engineering, Huaqiao University, Quanzhou, China
| | - Xun-Jie Mei
- College of engineering, Huaqiao University, Quanzhou, China
| | - Jin-Kun Zeng
- College of Information Science and Engineering, Huaqiao University, Xiamen, China
| | - Lan-Xin Qin
- College of engineering, Huaqiao University, Quanzhou, China
| | - Hao Zheng
- College of Information Science and Engineering, Huaqiao University, Xiamen, China
| | - Yong-Hang Zhang
- College of Information Science and Engineering, Huaqiao University, Xiamen, China
| | - Kai-Le Jiang
- College of Information Science and Engineering, Huaqiao University, Xiamen, China
| | - Bo Zhang
- College of Information Science and Engineering, Huaqiao University, Xiamen, China
| | - Wen-Hai Wu
- College of engineering, Huaqiao University, Quanzhou, China
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5
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Lu SJ, Gao ZO. Structural evolution and bonding properties of Nb1-2Gen-/0 (n = 3-7) clusters: Anion photoelectron spectroscopy and theoretical calculations. J Chem Phys 2024; 160:164306. [PMID: 38647305 DOI: 10.1063/5.0204633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 04/03/2024] [Indexed: 04/25/2024] Open
Abstract
This study presents a collaborative experimental and theoretical investigation into the structures and electronic properties of niobium-doped germanium clusters. Anion photoelectron spectra for Nb1-2Gen- (n = 3-7) clusters were acquired using 266 nm photon energies, enabling the determination of adiabatic detachment energies and vertical detachment energies. In conjunction with these experimental measurements, density functional theory (DFT) calculations were conducted to validate the experimentally obtained electron detachment energies and elucidate the geometric and electronic structures of each anionic cluster. The agreement between DFT calculations and experimental data establishes a solid foundation for assessing the structural evolution and electronic properties of niobium-doped germanium clusters. It is noted that both neutral and anionic clusters exhibit predominantly similar overall structural characteristics, with the exception of Nb2Ge6- and Nb2Ge6. Furthermore, this investigation emphasizes the exceptional chemical stability of the D3d symmetric chair-shaped structure in Nb2Ge6-, providing insights into its bonding characteristics.
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Affiliation(s)
- Sheng-Jie Lu
- Department of Chemistry and Chemical Engineering, 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
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6
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Zhang Y, Zhang Y, Yang J, Dong C, Li X. Theoretical study on structural evolution, photoelectron and vibrational spectra, and thermochemistry properties of neutral, anionic and di-anionic titanium-doped tin (TiSn n0/-/2- (n = 4-17)) nanoalloy clusters. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 306:123593. [PMID: 37925959 DOI: 10.1016/j.saa.2023.123593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/28/2023] [Accepted: 10/29/2023] [Indexed: 11/07/2023]
Abstract
The structural evolution, chemical stability, electronic and vibrational properties, as well as charge transfer and bonding character of TiSnn0/-/2- (n = 4-17) clusters have been performed with density functional theory calculations using ABCluster search technique. Structurally, it is found that the growth patterns prefer three kinds of absorbed stages from polygonal bipyramidal configuration for n = 4-6, to absorbing additional Sn on the adjacent surfaces of pentagonal bipyramid unit from n = 7-12, and finally to the TiSn130/-/2- cluster as the first foundational architectures, of which the encapsulated cage structure is formed when n = 11. The simulated PES spectra agree with available experiments. More interestingly, the neutral TiSn16 cluster not only possesses the high thermodynamic and relative stability but also preferable photochemical reactivity, that can be further explained by superatom features and delocalized multi-center bonds (AdNDP), while the strong p-d hybridization between Ti atom and Sn unit plays an important role in the stabilities of clusters, making it as the most suitable building units. In addition, the UV-Vis absorption spectra of TiSn16 are discussed, and the main transitions of crucial excited states are analyzed in detail. The Infrared and Raman vibrational characteristic peaks of all these neutral and charged species are properly assigned, of which the TiSnn0/-/2- (n = 10-17) clusters possess degenerating deformation mode of Ti atom wagging in Sn cage framework (Infrared active) and breathing mode of Sn cage framework (Raman active). All these findings will provide a further understanding for the nanoalloy cluster as the most suitable building block with further development as a potential optoelectronic material.
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Affiliation(s)
- Yanpeng Zhang
- College of Chemical Engineering, Inner Mongolia University of Technology, and Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, Hohhot 010051, People's Republic of China
| | - Yousuo Zhang
- China Communications Construction Company (Suzhou) of Urban Development & Construction Limited Company, Shihu Jinling Plaza, Yuexi Street, Wuzhong District, Suzhou City 215100, People's Republic of China
| | - Jucai Yang
- College of Chemical Engineering, Inner Mongolia University of Technology, and Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, Hohhot 010051, People's Republic of China; College of Resources and Environmental Engineering, Inner Mongolia University of Technology, Hohhot 010051, People's Republic of China
| | - Caixia Dong
- College of Resources and Environmental Engineering, Inner Mongolia University of Technology, Hohhot 010051, People's Republic of China.
| | - Xiaojun Li
- College of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, Shaanxi, People's Republic of China.
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7
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Zeng JK, Wang HQ, Li HF, Zheng H, Zhang JM, Mei XJ, Zhang YH, Ding XL. Exploring the stability and aromaticity of rare earth doped tin cluster MSn 16- (M = Sc, Y, La). Phys Chem Chem Phys 2024; 26:2986-2994. [PMID: 38163990 DOI: 10.1039/d3cp04803a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Rare earth elements have high chemical reactivity, and doping them into semiconductor clusters can induce novel physicochemical properties. The study of the physicochemical mechanisms of interactions between rare earth and tin atoms will enhance our understanding of rare earth functional materials from a microscopic perspective. Hence, the structure, electronic characteristics, stability, and aromaticity of endohedral cages MSn16- (M = Sc, Y, La) have been investigated using a combination of the hybrid PBE0 functional, stochastic kicking, and artificial bee colony global search technology. By comparing the simulated results with experimental photoelectron spectra, it is determined that the most stable structure of these clusters is the Frank-Kasper polyhedron. The doping of atoms has a minimal influence on density of states of the pure tin system, except for causing a widening of the energy gap. Various methods such as ab initio molecular dynamics simulations, the spherical jellium model, adaptive natural density partitioning, localized orbital locator, and electron density difference are employed to analyze the stability of these clusters. The aromaticity of the clusters is examined using iso-chemical shielding surfaces and the gauge-including magnetically induced currents. This study demonstrates that the stability and aromaticity of a tin cage can be systematically adjusted through doping.
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Affiliation(s)
- Jin-Kun Zeng
- 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
| | - Hao Zheng
- 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.
| | - 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.
| | - Xun-Lei Ding
- Department of Mathematics and Physics, North China Electric Power University, Beijing, 102206, China
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Zhang Y, Yang J, Dong C. Structural Growth Pattern, Electronic Configurations, and Spectral and Thermochemistry Properties of ZrSn n0/-/2- ( n = 4-17) Nanoscale Compounds: A Systematic Study Using Density Functional Theory. ACS OMEGA 2024; 9:3675-3690. [PMID: 38284033 PMCID: PMC10809232 DOI: 10.1021/acsomega.3c07674] [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: 10/03/2023] [Revised: 11/29/2023] [Accepted: 12/27/2023] [Indexed: 01/30/2024]
Abstract
By performing density functional theory (DFT) calculations for geometric optimization in conjunction with the artificial bee colony algorithm for cluster (ABCluster) global search approach, the ground-state structures of the neutral, anionic, and dianionic ZrSnn0/-/2- (n = 4-17) nanoscale compounds are obtained. Their structural growth evolution, spectral information, and electronic and thermochemical properties are investigated. Regarding the architectural evolution of the neutral, anion, and dianionic species, ZrSnn0/-/2- (n = 4-17) compounds possess two different stages of adsorption patterns in which, when n = 4-7 and n = 8-17, ZrSn40/-/2- and ZrSn80/-/2- compounds as the basic motif adsorb Sn atoms to become the larger clusters, respectively. The simulated photoelectron spectra (PES) of anionic compounds are in good agreement with the available experimental PES. The infrared and Raman spectra can be summarized as follows: under infrared vibrational modes, the sealed cages of ZrSnn0/-/2- compounds belong to the deformation mode, and under Raman vibrational modes, they belong to the breathing mode of the Sn cage framework. The density of states (DOS) spectra and natural population analysis (NPA) indicate that the interaction between the Zr atom and Snn frameworks of capsulated compounds has been developing stronger than for unsealed compounds. The results of thermochemical properties, molecular orbital shell (MOs) analysis, and ultraviolet-visible (UV-vis) absorption spectrum indicate that the neutral ZrSn16 nanoscale compound possesses not only both thermodynamic and chemical stability but also far-infrared sensing and optoelectronic properties and hence, is the best building block motif for new multipurpose nanoscale materials.
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Affiliation(s)
- Yanpeng Zhang
- College
of Chemical Engineering, Inner Mongolia
University of Technology, and Inner Mongolia Key Laboratory of Theoretical
and Computational Chemistry Simulation, Hohhot 010051, People’s Republic of China
| | - Jucai Yang
- College
of Chemical Engineering, Inner Mongolia
University of Technology, and Inner Mongolia Key Laboratory of Theoretical
and Computational Chemistry Simulation, Hohhot 010051, People’s Republic of China
- College
of Resources and Environmental Engineering, Inner Mongolia University of Technology, Hohhot 010051, People’s Republic of China
| | - Caixia Dong
- College
of Resources and Environmental Engineering, Inner Mongolia University of Technology, Hohhot 010051, People’s Republic of China
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Zhang LJ, Yang B, Li DZ, Pei L, Farooq U, Xu XL, Zheng WJ, Xu HG. Structural Evolution and Electronic Properties of V 2Si n-/0 ( n = 7-14) Clusters: Anion Photoelectron Spectroscopy and Theoretical Calculations. Inorg Chem 2023; 62:14727-14738. [PMID: 37646377 DOI: 10.1021/acs.inorgchem.3c02174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
A systematic study of the structures and electronic properties of V2-doped silicon clusters, V2Sin-/0 (n = 7-14), was carried out by anion photoelectron spectroscopic experiments combined with theoretical calculations. According to the experimental spectra of V2Sin- (n = 7-14) clusters, the V2Si12- cluster has the highest vertical detachment energy (VDE) of 3.66 eV, while V2Si7- and V2Si14- clusters have lower VDEs of 2.81 and 2.84 eV, respectively. The most stable structure searches find that two V atoms in the V2Sin- clusters with size n = 7 and 8 are located at the surface, while V2Sin- clusters with n ≥ 9 prefer cage-like structures. Based on the analysis of the structural evolution of V2Sin- (n = 9-14) clusters, it can be clearly seen how the antihexagonal prism with one V encapsulated in the cage is gradually built from n = 9 to 12 and further developed from n = 12 to 14 with the extra silicon atoms located at the surface of the Si12 cage. The molecular orbital and the atoms in molecule analysis of the V2Sin- (n = 7-14) anions demonstrate that the strong V-V bond and the delocalized interaction between the V2 moiety and the Sin ligand play a significant role in stabilizing the cluster structures. A strong linear correlation has been found between the Wiberg bond order of the V-V bond and the electron density at the V-V bond critical points.
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Affiliation(s)
- Li-Juan Zhang
- College of Chemical Engineering and Safety Engineering, Binzhou University, Binzhou, Shandong 256600, China
| | - Bin Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Da-Zhi Li
- College of Chemical Engineering and Safety Engineering, Binzhou University, Binzhou, Shandong 256600, China
| | - Ling Pei
- College of Chemical Engineering and Safety Engineering, Binzhou University, Binzhou, Shandong 256600, China
| | - Umar Farooq
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Department of Chemistry, COMSATS University Islamabad, Abbottabad-Campus, Abbottabad, Khyber Pakhtunkhwa 22060, Pakistan
| | - 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
| | - 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
| | - 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
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10
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Wang K. Cr 2 Ge n - (n = 15-20) clusters with two Cr atoms exhibited antiferromagnetic coupling. J Comput Chem 2023. [PMID: 37083251 DOI: 10.1002/jcc.27117] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/06/2023] [Accepted: 04/11/2023] [Indexed: 04/22/2023]
Abstract
In this work, we investigated the structural evolution, electronic and magnetic properties of Cr2 Gen - clusters for n = 15-20 by using density functional theory (DFT) calculations. Low-energy structures for these clusters were fully searched through a self-developed genetic algorithm code combined with DFT calculations. The calculations show that all the two Cr atoms prefer to stay together to form a strong CrCr bond, which-except for size 20-is shorter than the nearest neighbor distance in Cr bulk. Sizes 15 and 16 adopt a wheel-like structure as the structural motif with the extra Ge atoms capped on the top, while larger sizes (n = 17-20) prefer fullerene-like Cr2 @Ge12 motifs. From the results of the average binding energies of Cr2 Gen - , one can conclude that it is easier to form larger size clusters. In these lowest-lying isomers except for size 16, the two Cr atoms contribute opposite magnetic moments for the total magnetic moments of 1 μB , showing an antiferromagnetic state.
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Affiliation(s)
- Kai Wang
- Henan Engineering Research Centre of Building-Photovoltaics, School of Mathematics and Physics, Henan University of Urban Construction, Pingdingshan, China
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11
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Yokoyama T, Nakajima A. Bridging the gas and condensed phases for metal-atom encapsulating silicon- and germanium-cage superatoms: electrical properties of assembled superatoms. Phys Chem Chem Phys 2023; 25:9738-9752. [PMID: 36947064 DOI: 10.1039/d3cp00120b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
With the development of nanocluster (NC) synthesis methods in the gas phase, atomically precise NCs composed of a finite number of metal and semiconductor atoms have emerged. NCs are expected to be the smallest units for nanomaterials with various functions, such as catalysts, optoelectronic materials, and electromagnetic devices. The exploration of a stable NC called a magic number NC has revealed a couple of important factors, such as a highly symmetric geometric structure and an electronic shell closure, and a magic number behavior is often enhanced by mixing additional elements. A synergetic effect between geometric and electronic structures leads to the formation of chemically robust NC units called superatoms (SAs), which act as individual units assembled as thin films. The agglomeration of non-ligated bare SAs is desirable in fabricating the assembled SAs associated with intrinsic SA nature. The recent development of an intensive pulsed magnetron sputtering method opens up the scalable synthesis of SAs in the gas phase, enabling the fabrication of SA assembly coupled with the non-destructive deposition of a soft-landing technique. This perspective describes our recent progress in the investigation of the formation of binary cage SA (BCSA) assembled thin films composed of metal-atom encapsulating silicon-cage SAs (M@Si16) and germanium-cage SAs (M@Ge16), with a focus on their electrical properties associated with a conduction mechanism toward the development of new functional nanoscale materials.
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Affiliation(s)
- Takaho Yokoyama
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
| | - Atsushi Nakajima
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
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12
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The influence of double lanthanide metal atoms on the stability of germanium-based clusters. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2023.111819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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13
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Liang X, Li X, Gao N, Wu X, Zhao Z, Shi R, Su Y, Zhao J. Theoretical prediction for growth behavior and electronic properties of monoanionic Ru2Gen− (n = 3–20) clusters. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Wang H, Dong C, Yang J. Theoretical Insights into the Geometrical Evolution, Photoelectron Spectra, and Vibrational Properties of YGe n - ( n = 6-20) Anions: From Y-Linked to Y-Encapsulated Structures. ACS OMEGA 2022; 7:36330-36342. [PMID: 36278055 PMCID: PMC9583326 DOI: 10.1021/acsomega.2c03983] [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: 06/25/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
The structural evolution behavior of germanium anionic clusters doped with the rare-earth metal yttrium, YGe n - (n = 6-20), has been investigated using a mPW2PLYP density functional scheme and an ABCluster structure searching technique. The results reveal that with increasing cluster size n, the structure evolution pattern is from the Y-linked framework (n = 10-14), where Y serves as a linker (the Y atom bridges two germanium subclusters), to the Y-encapsulated framework (n = 15-20), where the Y atom is located in the center of the Ge cage. The simulated PES spectra show satisfying agreement with the experimental PES spectra for n = 12-20, which reveals that the global minimum structures reported here are reliable. In particular, the anionic YGe16 - nanocluster is found to be the most stable structure in the size range of n = 6-20 through analyzes of the relative stability, highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) gap, spherical jellium model, and isochemical shielding surface. Moreover, spectral properties such as infrared and Raman spectra were reported. In addition, the UV-vis spectra of the YGe16 - nanocluster are in good agreement with solar energy distribution, showing that such substances serve as multifunctional building blocks to be potentially used in optoelectronic devices or solar energy converters.
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Affiliation(s)
- Haibo Wang
- School
of Chemical Engineering, Inner Mongolia
University of Technology, and Inner Mongolia Key Laboratory of Theoretical
and Computational Chemistry Simulation, Hohhot010051, Peoples Republic of China
| | - Caixia Dong
- School
of Mining and Technology, Inner Mongolia
University of Technology, Hohhot010051, Peoples Republic of
China
| | - Jucai Yang
- School
of Chemical Engineering, Inner Mongolia
University of Technology, and Inner Mongolia Key Laboratory of Theoretical
and Computational Chemistry Simulation, Hohhot010051, Peoples Republic of China
- School
of Energy and Power Engineering, Inner Mongolia
University of Technology, Hohhot010051, Peoples Republic of
China
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15
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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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16
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Yang Z, Rehman AU, Cao Z, Yang J. Structural evolution, photoelectron spectra and vibrational properties of anionic GdGe n - ( n = 5-18) nanoalloy clusters: a DFT insight. RSC Adv 2022; 12:22020-22030. [PMID: 36043068 PMCID: PMC9364359 DOI: 10.1039/d2ra04037a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/01/2022] [Indexed: 12/02/2022] Open
Abstract
The structural growth of Gd-doped germanium anionic nanoclusters, GdGen− (n = 5–18), has been explored via quantum chemistry calculations using the mPW2PLYP method and an unprejudiced structural searching technique known as ABCluster. The optimized geometries exhibited that when n = 10–14, the structural evolution favors the Gd-linked configuration where the Gd atom as a connector bridges two Ge subgroups, while the Gd atom is encapsulated in a closed cage-like Ge frame when n = 15–18. The properties like magnetic moment, charge transfer, relative stability, HOMO–LUMO gap, photoelectron spectra, and infrared and Raman spectra have been predicted. The information of these spectra could provide extra approaches to experimentally determine the electronic structures and equilibrium configuration of these compounds. The largest spin magnetic moment of 7 μB is attained via half-filled 4f states. The GdGe16− nanocluster is determined to be a superatom because its total valence of 75 electrons can be distributed to the orbital sequence of 1S21P6(4f7)1D101F142S22P21G182P42D10, which complies with not only Hund's rule, but also the spherical jellium model. Particularly, its UV-Vis spectra match well with solar energy distribution. Such materials act as nano multifunctional building units potentially used in solar energy converters or ultra-highly sensitive near-infrared photodetectors. The structural evolution, electronic and vibrational properties of GdGen− (n=5-18) nanoclusters were studied by quantum chemical calculations, which revealed GdGe16− nanocluster is a superatom to the orbital of 1S21P6(4f7)1D101F142S22P21G182P42D10.![]()
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Affiliation(s)
- Zhaofeng Yang
- School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation Hohhot 010051 Peoples Republic of China
| | - Aziz U Rehman
- School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation Hohhot 010051 Peoples Republic of China
| | - Zhenzhu Cao
- School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation Hohhot 010051 Peoples Republic of China
| | - Jucai Yang
- School of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation Hohhot 010051 Peoples Republic of China .,School of Energy and Power Engineering, Inner Mongolia University of Technology Hohhot 010051 Peoples Republic of China
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17
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Nguyen HT, Cuong NT, Lan NT, Tung NT, Nguyen MT, Tam NM. First-row transition metal doped germanium clusters Ge 16M: some remarkable superhalogens. RSC Adv 2022; 12:13487-13499. [PMID: 35527729 PMCID: PMC9068264 DOI: 10.1039/d1ra08527a] [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: 11/21/2021] [Accepted: 04/26/2022] [Indexed: 11/21/2022] Open
Abstract
A theoretical study of geometric and electronic structures, stability and magnetic properties of both neutral and anionic Ge16M0/− clusters with M being a first-row 3d transition metal atom, is performed using quantum chemical approaches. Both the isoelectronic Ge16Sc− anion and neutral Ge16Ti that have a perfect Frank–Kasper tetrahedral Td shape and an electron shell filled with 68 valence electrons, emerge as magic clusters with an enhanced thermodynamic stability. The latter can be rationalized by the simple Jellium model. Geometric distortions from the Frank–Kasper tetrahedron of Ge16M having more or less than 68 valence electrons can be understood by a Jahn–Teller effect. Remarkably, DFT calculations reveal that both neutral Ge16Sc and Ge16Cu can be considered as superhalogens as their electron affinities (≥3.6 eV) exceed the value of the halogen atoms and even that of icosahedral Al13. A detailed view of the magnetic behavior of Ge16M0/− clusters shows that the magnetic moments of the atomic metals remain large even when they are quenched upon doping. When M goes from Sc to Zn, the total spin magnetic moment of Ge16M0/− increases steadily and reaches the maximum value of 3 μB with M = Mn before decreasing towards the end of the first-row 3d block metals. Furthermore, the IR spectra of some tetrahedral Ge16M are also predicted. A theoretical study of geometric and electronic structures, stability and magnetic properties of both neutral and anionic Ge16M0/− clusters with M being a first-row 3d transition metal atom, is performed using quantum chemical approaches.![]()
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Affiliation(s)
- Huu Tho Nguyen
- Faculty of Natural Sciences Education, Sai Gon University 273 An Duong Vuong Street Ho Chi Minh City Vietnam
| | - Ngo Tuan Cuong
- Center for Computational Science, Faculty of Chemistry, Hanoi National University of Education Hanoi Vietnam
| | - Ngo Thi Lan
- Institute of Materials Science and Graduate University of Science and Technology, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Hanoi Vietnam.,Institute of Science and Technology, TNU-University of Sciences Tan Thinh Ward Thai Nguyen City Vietnam
| | - Nguyen Thanh Tung
- Institute of Materials Science and Graduate University of Science and Technology, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Hanoi Vietnam
| | - Minh Tho Nguyen
- Institute for Computational Science and Technology (ICST) Quang Trung Software City Ho Chi Minh City Vietnam
| | - Nguyen Minh Tam
- Laboratory of Theoretical and Computational Biophysics, Advanced Institute of Materials Science, Ton Duc Thang University Ho Chi Minh City Vietnam .,Faculty of Pharmacy, Ton Duc Thang University Ho Chi Minh City Vietnam
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18
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Yang Z, Cao Z, Rehman AU, Yang J. Structural Evolution, Electronic Structures, and Vibrational Properties of Anionic LuGe n ( n = 5-17) Clusters: From Lu-Linked to Lu-Encapsulated Configurations. Inorg Chem 2021; 60:14446-14456. [PMID: 34498842 DOI: 10.1021/acs.inorgchem.1c02247] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The structural evolution pattern and electronic properties of Lu-doped germanium anion clusters, LuGen- (n = 5-17), have been investigated using a global search method combined with a double hybrid density functional theory and by comparing the theoretical PES spectra with the experimental ones. It is found that, for the structural growth patterns, a Lu-linked configuration is preferred for n = 10-14 in which the Lu atom as a linker connects two Ge subclusters and a Lu-encapsulated Ge cage-like motif is preferred for n = 15-17. The simulated PES spectra agree with experimental ones, revealing that the current global minimum structures are the true minima. The properties such as relative stability, charge transfer, highest-energy occupied molecular orbital-lowest-energy unoccupied molecular orbital (HOMO-LUMO) gap, IR, Raman, and ultraviolet-visible (UV-vis) spectra have been evaluated. The results of IR and Raman spectra could provide additional ways to experimentally identify the structure of these clusters. The results of stability, HOMO-LUMO gap, and UV-vis spectra could make the LuGe16- cluster the most suitable building block for further development as a potential optoelectronic material.
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Affiliation(s)
- Zhaofeng Yang
- School of Chemical Engineering, Inner Mongolia University of Technology, and Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, Hohhot 010051, Peoples Republic of China
| | - Zhenzhu Cao
- School of Chemical Engineering, Inner Mongolia University of Technology, and Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, Hohhot 010051, Peoples Republic of China
| | - Aziz U Rehman
- School of Chemical Engineering, Inner Mongolia University of Technology, and Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, Hohhot 010051, Peoples Republic of China
| | - Jucai Yang
- School of Chemical Engineering, Inner Mongolia University of Technology, and Inner Mongolia Key Laboratory of Theoretical and Computational Chemistry Simulation, Hohhot 010051, Peoples Republic of China.,School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, Peoples Republic of China
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19
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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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20
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Liu B, Yang J. Thermochemical Properties and Growth Mechanism of the Ag-Doped Germanium Clusters, AgGe n λ with n = 1-13 and λ = -1, 0, and +1. ACS OMEGA 2021; 6:9813-9827. [PMID: 33869961 PMCID: PMC8047658 DOI: 10.1021/acsomega.1c00501] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 03/24/2021] [Indexed: 06/12/2023]
Abstract
A systematic investigation of the silver-doped germanium clusters AgGe n with n = 1-13 in the neutral, anionic, and cationic states is performed using the unbiased global search technique combined with a double-density functional scheme. The lowest-energy minima of the clusters are identified based on calculated energies and measured photoelectron spectra (PES). Total atomization energies and thermochemical properties such as electron affinity (EA), ionization potential (IP), binding energy, hardness, and highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gap are obtained and compared with those of pure germanium clusters. For neutral and anionic clusters, although the most stable structures are inconsistent when n = 7-10, their structure patterns have an exohedral structure except for n = 12, which is a highly symmetrical endohedral configuration. For the cationic state, the most stable structures are attaching structures (in which an Ag atom is adsorbed on the Ge n cluster or a Ge atom is adsorbed on the AgGe n-1 cluster) at n = 1-12, and when n = 13, the cage configuration is formed. The analyses of binding energy indicate that doping of an Ag atom into the neutral and charged Ge n clusters decreases their stability. The theoretical EAs of AgGe n clusters agree with the experimental values. The IP of neutral Ge n clusters is decreasing when doped with an Ag atom. The chemical activity of AgGe n is analyzed through HOMO-LUMO gaps and hardness, and the variant trend of both versus cluster size is slightly different. The accuracy of the theoretical analyses in this paper is demonstrated successfully by the agreement between simulated and experimental results such as PES, IP, EA, and binding energy.
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Affiliation(s)
- Bin Liu
- School
of Chemical Engineering, Inner Mongolia Key Laboratory of Theoretical
and Computational Chemistry Simulation, Inner Mongolia University of Technology, Hohhot 010051, People’s Republic of China
| | - Jucai Yang
- School
of Chemical Engineering, Inner Mongolia Key Laboratory of Theoretical
and Computational Chemistry Simulation, Inner Mongolia University of Technology, Hohhot 010051, People’s Republic of China
- School
of Energy and Power Engineering, Inner Mongolia
University of Technology, Hohhot 010051, People’s Republic
of China
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21
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Exploring the structural stability order and electronic properties of transition metal M@Ge12 (M = Co, Pd, Tc, and Zr) doped germanium cage clusters–A density functional simulation. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129371] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Theoretical Study on Structural Stability, Growth Behavior and Photoelectron Spectroscopy of Copper-Doped Germanium Clusters CuGen−/0 (n = 4–13). J CLUST SCI 2021. [DOI: 10.1007/s10876-021-01985-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Tran VT, Tran QT. Electronic structures of
NbGe
n
−/0/+
(
n
= 1–3) clusters from multiconfigurational
CASPT2
and density matrix renormalization group
‐CASPT2
calculations. J Comput Chem 2020; 41:2641-2652. [DOI: 10.1002/jcc.26420] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/01/2020] [Accepted: 08/28/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Van Tan Tran
- Theoretical and Physical Chemistry Division Dong Thap University Cao Lanh Dong Thap Vietnam
| | - Quoc Tri Tran
- Theoretical and Physical Chemistry Division Dong Thap University Cao Lanh Dong Thap Vietnam
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24
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Affiliation(s)
- Jijun Zhao
- 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
| | - Si Zhou
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
| | - Vijay Kumar
- Center for Informatics, School of Natural Sciences, Shiv Nadar University, NH-91, Tehsil Dadri, Gautam Buddha Nagar 201314, U. P., India
- Dr. Vijay Kumar Foundation, 1969 Sector 4, Gurgaon 122001, Haryana, India
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25
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Pham LN, Russo SP. Energetic degeneracy and electronic structures of germanium trimers doped with titanium. J Chem Phys 2020; 153:074309. [PMID: 32828080 DOI: 10.1063/5.0016230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Geometries and electronic structures of germanium trimer clusters doped with titanium TiGe3 -/0 were studied making use of the complete active space self-consistent field followed by second-order perturbation theory explicitly correlated coupled cluster singles and doubles method with perturbative triples corrections CCSD(T)-F12 and Tao-Perdew-Staroverov-Scuseria methods. Two electronic states (2A' and 2A″) of the anion (pyramid shape) were determined to be nearly degenerate and energetically competing for the anionic ground state of TiGe3 -. These two anionic states are believed to be concurrently populated in the experiment and induce six observed anion photoelectron bands. Total 14 electronic transitions starting from the 2A' and 2A″ states were assigned to five out of six visible bands in the experimental anion photoelectron spectrum of TiGe3 -. Each band was proven to be caused by multiple one-electron detachments from two populated anionic states. The last experimental band with the highest detachment energy is believed to be the result of various inner one-electron removals.
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Affiliation(s)
- Le Nhan Pham
- ARC Centre of Excellence in Exciton Science, School of Science, RMIT University, Melbourne 3000, Australia
| | - Salvy P Russo
- ARC Centre of Excellence in Exciton Science, School of Science, RMIT University, Melbourne 3000, Australia
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26
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Chandrasekar A, Joshi M, Ghanty TK. On the position of La, Lu, Ac and Lr in the periodic table: a perspective. J CHEM SCI 2019. [DOI: 10.1007/s12039-019-1713-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Chen Y, Yang J, Dong C. Structural and electronic properties of nanosize semiconductor CeSi0/− (n = 4–20) material: A double-hybrid density functional theory investigation. COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2019.112635] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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29
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Wilson RJ, Lichtenberger N, Weinert B, Dehnen S. Intermetalloid and Heterometallic Clusters Combining p-Block (Semi)Metals with d- or f-Block Metals. Chem Rev 2019; 119:8506-8554. [DOI: 10.1021/acs.chemrev.8b00658] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert J. Wilson
- Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Niels Lichtenberger
- Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Bastian Weinert
- Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Stefanie Dehnen
- Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
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30
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Mayer K, Weßing J, Fässler TF, Fischer RA. Intermetalloid Clusters: Molecules and Solids in a Dialogue. Angew Chem Int Ed Engl 2018; 57:14372-14393. [DOI: 10.1002/anie.201805897] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Kerstin Mayer
- Chair of Inorganic Chemistry with Focus on Novel Materials; Department of Chemistry; Technical University of Munich; Lichtenbergstr. 4 85747 Garching Germany
| | - Jana Weßing
- Chair of Inorganic and Metal-Organic Chemistry; Department of Chemistry; Technical University of Munich; Lichtenbergstr. 4 85748 Garching Germany
| | - Thomas F. Fässler
- Chair of Inorganic Chemistry with Focus on Novel Materials; Department of Chemistry; Technical University of Munich; Lichtenbergstr. 4 85747 Garching Germany
| | - Roland A. Fischer
- Chair of Inorganic and Metal-Organic Chemistry; Department of Chemistry; Technical University of Munich; Lichtenbergstr. 4 85748 Garching Germany
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31
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Mayer K, Weßing J, Fässler TF, Fischer RA. Intermetalloide Cluster: Moleküle und Festkörper im Dialog. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805897] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kerstin Mayer
- Lehrstuhl für Anorganische Chemie mit Schwerpunkt Neue Materialien; Department Chemie; Technische Universität München; Lichtenbergstr. 4 85747 Garching Deutschland
| | - Jana Weßing
- Lehrstuhl für Anorganische und Metallorganische Chemie; Department Chemie; Technische Universität München; Lichtenbergstr. 4 85748 Garching Deutschland
| | - Thomas F. Fässler
- Lehrstuhl für Anorganische Chemie mit Schwerpunkt Neue Materialien; Department Chemie; Technische Universität München; Lichtenbergstr. 4 85747 Garching Deutschland
| | - Roland A. Fischer
- Lehrstuhl für Anorganische und Metallorganische Chemie; Department Chemie; Technische Universität München; Lichtenbergstr. 4 85748 Garching Deutschland
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32
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Tran VT, Tran QT. Spin State Energetics of VGe n -/0 (n = 5-7) Clusters and New Assignments of the Anion Photoelectron Spectra. J Comput Chem 2018; 39:2103-2109. [PMID: 30207608 DOI: 10.1002/jcc.25527] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 06/24/2018] [Indexed: 01/20/2023]
Abstract
The geometrical structures, electron leading configurations, and relative energies of the low-lying states of VGe n -/0 (n = 5-7) clusters have been investigated with density functional theory and CASSCF/CASPT2 method. The pure GGA BP86 functional gave almost the same relative energy order for the low-lying states as the CASPT2 method. At the BP86 and CASPT2 levels, the ground states of VGe n -/0 (n = 5-7) clusters were proposed to be the 1 A1 and 2 A1 of A-VGe5 -/0 , 3 A″ and 2 A″, 2 A' (2 E2 ) of A-VGe6 -/0 , and 1 A' and 2 A' of A-VGe7 -/0 isomers. The adiabatic and vertical detachment energies (ADEs and VDEs) of the detachments of one electron from several orbitals of the anionic ground states were reported at the CASPT2 level. The calculated ADEs and VDEs corresponded well with the experimental values as observed in the 266 nm anion photoelectron spectra. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Van Tan Tran
- Theoretical and Physical Chemistry Division, Dong Thap University, 783-Pham Huu Lau, Ward 6, Cao Lanh City, Dong Thap, Vietnam
| | - Quoc Tri Tran
- Theoretical and Physical Chemistry Division, Dong Thap University, 783-Pham Huu Lau, Ward 6, Cao Lanh City, Dong Thap, Vietnam
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33
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Borshch NA, Kurganskii SI. Anionic Germanium–Niobium Clusters: Atomic Structure, Mechanisms of Cluster Formation, and Electronic Spectra. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418090078] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Liang X, Kong X, Lu SJ, Huang Y, Zhao J, Xu HG, Zheng W, Zeng XC. Structural evolution and magnetic properties of anionic clusters Cr 2Ge n (n = 3-14): photoelectron spectroscopy and density functional theory computation. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:335501. [PMID: 29995644 DOI: 10.1088/1361-648x/aad2bf] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The structural, electronic and magnetic properties of dual Cr atoms doped germanium anionic clusters, [Formula: see text] (n = 3-14), have been investigated by using photoelectron spectroscopy in combination with density-functional theory calculations. The low-lying structures of [Formula: see text] are determined by DFT based genetic algorithm optimization. For [Formula: see text] with n ⩽ 8, the structures are bipyramid-based geometries, while [Formula: see text] cluster has an opening cage-like structure, and the half-encapsulated structure is gradually covered by the additional Ge atoms to form closed-cage configuration with one Cr atom interior for n = 10 to 14. Meanwhile, the two Cr atoms in [Formula: see text] clusters tend to form a Cr-Cr bond rather than be separated. Interestingly, the magnetic moment of all the anionic clusters considered is 1 μ B. Almost all clusters exhibit antiferromagnetic Cr-Cr coupling, except for two clusters, [Formula: see text] and [Formula: see text]. To our knowledge, the [Formula: see text] cluster is the first kind of transition-metal doped semiconductor clusters that exhibit relatively stable antiferromagnetism within a wide size range. The experimental/theoretical results suggest high potential to modify the magnetic behavior of semiconductor clusters through introducing different transition-metal dopant atoms.
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Affiliation(s)
- Xiaoqing Liang
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Ministry of Education, Dalian 116024, People's Republic of China. Department of Chemistry, University of Nebraska, Lincoln, NE 68588, United States of America
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35
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Tsunoyama H, Shibuta M, Nakaya M, Eguchi T, Nakajima A. Synthesis and Characterization of Metal-Encapsulating Si 16 Cage Superatoms. Acc Chem Res 2018; 51:1735-1745. [PMID: 29715011 DOI: 10.1021/acs.accounts.8b00085] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Nanoclusters, aggregates of several to hundreds of atoms, have been one of the central issues of nanomaterials sciences owing to their unique structures and properties, which could be found neither in nanoparticles with several nanometer diameters nor in organometallic complexes. Along with the chemical nature of each element, properties of nanoclusters change dramatically with size parameters, making nanoclusters strong potential candidates for future tailor-made materials; these nanoclusters are expected to have attractive properties such as redox activity, catalysis, and magnetism. Alloying of nanoclusters additionally gives designer functionality by fine control of their electronic structures in addition to size parameters. Among binary nanoclusters, binary cage superatoms (BCSs) composed of transition metal (M) encapsulating silicon cages, M@Si16, have unique cage structures of 16 silicon atoms, which have not been found in elemental silicon nanoclusters, organosilicon compounds, and silicon based clathrates. The unique composition of these BCSs originates from the simultaneous satisfaction of geometric and electronic shell-closings in terms of cage geometry and valence electron filling, where a total of 68 valence electrons occupy the superatomic orbitals of (1S)2(1P)6(1D)10(1F)14(2S)2(1G)18(2P)6(2D)10 for M = group 4 elements in neutral ground state. The most important issue for M@Si16 BCSs is fine-tuning of their characters by replacement of the central metal atoms, M, based on one-by-one adjustment of valence electron counts in the same structure framework of Si16 cage; the replacement of M yields a series of M@Si16 BCSs, based on their superatomic characteristics. So far, despite these unique features probed in the gas-phase molecular beam and predicted by quantum chemical calculations, M@Si16 have not yet been isolated. In this Account, we have focused on recent advances in synthesis and characterizations of M@Si16 BCSs (M = Ti and Ta). A series of M@Si16 BCSs (M = groups 3 to 5) was found in gas-phase molecular beam experiments by photoelectron spectroscopy and mass spectrometry: formation of halogen-, rare-gas-, and alkali-like superatoms was identified through one-by-one tuning of number of total valence electrons. Toward future functional materials in the solid state, we have developed an intensive, size-selected nanocluster source based on high-power impulse magnetron sputtering coupled with a mass spectrometer and a soft-landing apparatus. With scanning probe microscopy and photoelectron spectroscopy, the structure of surface-immobilized BCSs has been elucidated; BCSs can be dispersed in an isolated form using C60 fullerene decoration of the substrate. The intensive nanocluster source also enables the synthesis of BCSs in the 100-mg scale by coupling with a direct liquid-embedded trapping method into organic dispersants, enabling their structure characterization as a highly symmetric "metal-encapsulating tetrahedral silicon-cage" (METS) structure with Frank-Kasper geometry.
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Affiliation(s)
- Hironori Tsunoyama
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Masahiro Shibuta
- Keio Institute of Pure and Applied Sciences (KiPAS), Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Masato Nakaya
- Department of Energy Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Toyoaki Eguchi
- Department of Physics, Graduate School of Science, Tohoku University, 6-3, Aramaki Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Atsushi Nakajima
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
- Keio Institute of Pure and Applied Sciences (KiPAS), Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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36
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Deng XJ, Kong XY, Liang X, Yang B, Xu HG, Xu XL, Feng G, Zheng WJ. Structural and magnetic properties of FeGe n-/0 (n = 3-12) clusters: Mass-selected anion photoelectron spectroscopy and density functional theory calculations. J Chem Phys 2018; 147:234310. [PMID: 29272919 DOI: 10.1063/1.5000886] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The structural, electronic, and magnetic properties of FeGen-/0 (n = 3-12) clusters were investigated by using anion photoelectron spectroscopy in combination with density functional theory calculations. For both anionic and neutral FeGen (n = 3-12) clusters with n ≤ 7, the dominant structures are exohedral. The FeGe8-/0 clusters have half-encapsulated boat-shaped structures, and the opening of the boat-shaped structure is gradually covered by the additional Ge atoms to form Gen cage from n = 9 to 11. The structures of FeGe10-/0 can be viewed as two Ge atoms symmetrically capping the opening of the boat-shaped structure of FeGe8, and those of FeGe12-/0 are distorted hexagonal prisms with the Fe atom at the center. Natural population analysis shows that there is an electron transfer from the Ge atoms to the Fe atom at n = 8-12. The total magnetic moment of FeGen-/0 and local magnetic moment of the Fe atom have not been quenched.
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Affiliation(s)
- Xiao-Jiao Deng
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, 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
| | - Xiaoqing Liang
- Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams, Dalian University of Technology, Ministry of Education, Dalian 116024, China
| | - Bin Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, 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
| | - 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
| | - Gang Feng
- 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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37
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Joshi M, Chandrasekar A, Ghanty TK. Theoretical investigation of M@Pb 122- and M@Sn 122- Zintl clusters (M = Lr n+, Lu n+, La 3+, Ac 3+ and n = 0, 1, 2, 3). Phys Chem Chem Phys 2018; 20:15253-15272. [PMID: 29790514 DOI: 10.1039/c8cp01056k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The positions of lawrencium (Lr), lutetium (Lu), actinium (Ac) and lanthanum (La) in the periodic table have been a controversial topic for quite some time. According to studies carried out by different groups with their justifications, these elements may potentially be placed in the d-block, p-block or all four in a 15 element f-block. The present work looks into this issue from a new perspective, which involves encapsulation of these four elements into Zintl ion clusters, Pb122- and Sn122-, followed by the determination of the structural, thermodynamic and electronic properties of these endohedral M@Pb122- and M@Sn122- clusters (M = Lrn+, Lun+ with n = 0, 1, 2, 3) using first principles based density functional theory (DFT). These parameters are compared with similar clusters encapsulated La3+ and Ac3+ ions in order to seek out similarities and differences to draw conclusions about their placement in the periodic table. For the first time the structural, energetic, and electronic properties of these metal atom/ion encapsulated Pb122- and Sn122- clusters have been investigated thoroughly. Structural parameters such as bond distances, geometry and symmetry, electronic properties viz. the density of states, the molecular orbital ordering, the electron localization function, bond critical point properties and charge distributions have been analyzed. Additionally, the thermodynamic property of the binding energy during the encapsulation process has also been calculated. All M@Pb12+ and M@Sn12+ (M = Lr and Lu) clusters form stable 18 bonding electron magic number systems with shell closing. They show negative values of binding energy and relatively large HOMO-LUMO energy gaps indicating the stability of such clusters. All the calculated parameters for Lr encapsulated clusters closely match with the corresponding calculated parameters of Lu encapsulated clusters, confirming the similarity between Lr and Lu metal atoms in various oxidation states, though their atomic ground state valence electronic configurations are different. The effect of spin orbit coupling has also been investigated using the ZORA approach. It is interesting to discover that La and Ac showed striking similarities to Lr and Lu with respect to all the properties investigated and have formed a stable 18-electron system.
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Affiliation(s)
- Meenakshi Joshi
- Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Mumbai 400 085, India.
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38
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Jena P, Sun Q. Super Atomic Clusters: Design Rules and Potential for Building Blocks of Materials. Chem Rev 2018; 118:5755-5870. [DOI: 10.1021/acs.chemrev.7b00524] [Citation(s) in RCA: 302] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Puru Jena
- Physics Department, Virginia Commonwealth University, Richmond, Virginia 23284-2000, United States
| | - Qiang Sun
- Physics Department, Virginia Commonwealth University, Richmond, Virginia 23284-2000, United States
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39
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Mahtout S, Siouani C, Rabilloud F. Growth Behavior and Electronic Structure of Noble Metal-Doped Germanium Clusters. J Phys Chem A 2018; 122:662-677. [PMID: 29257877 DOI: 10.1021/acs.jpca.7b09887] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Structures, energetics, and electronic properties of noble metal-doped germanium (MGen with M = Cu, Ag, Au; n = 1-19) clusters are systematically investigated by using the density functional theory (DFT) approach. The endohedral structures in which the metal atom is encapsulated inside of a germanium cage appear at n = 10 when the dopant is Cu and n = 12 for M = Ag and Au. While Cu doping enhances the stability of the corresponding germanium frame, the binding energies of AgGen and AuGen are always lower than those of pure germanium clusters. Our results highlight the great stability of the CuGe10 cluster in a D4d structure and, to a lesser extent, that of AgGe15 and AuGe15, which exhibits a hollow cage-like geometry. The sphere-type geometries obtained for n = 10-15 present a peculiar electronic structure in which the valence electrons of the noble metal and Ge atoms are delocalized and exhibit a shell structure associated with the quasi-spherical geometry. It is found that the coinage metal is able to give both s- and d-type electrons to be reorganized together with the valence electrons of Ge atoms through a pooling of electrons. The cluster size dependence of the stability, the frontier orbital energy gap, the vertical ionization potentials, and electron affinities are given.
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Affiliation(s)
- Sofiane Mahtout
- Laboratoire de Physique Théorique, Faculté des Sciences Exactes, Université de Bejaia , 06000 Bejaia, Algérie
| | - Chaouki Siouani
- Laboratoire de Physique Théorique, Faculté des Sciences Exactes, Université de Bejaia , 06000 Bejaia, Algérie
| | - Franck Rabilloud
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière , F-69622 Villeurbanne, France
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40
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Shibuta M, Niikura T, Kamoshida T, Tsunoyama H, Nakajima A. Nitric oxide oxidation of a Ta encapsulating Si cage nanocluster superatom (Ta@Si16) deposited on an organic substrate; a Si cage collapse indicator. Phys Chem Chem Phys 2018; 20:26273-26279. [DOI: 10.1039/c8cp05580g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stepwise oxidative reaction of a Ta-encapsulating Si16 caged nanocluster superatom upon exposure to nitric oxide is investigated by monitoring N 1s core level signals.
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Affiliation(s)
- Masahiro Shibuta
- Keio Institute of Pure and Applied Sciences (KiPAS)
- Keio University
- 3-14-1, Hiyoshi
- Kohoku-ku
- Japan
| | - Toshiki Niikura
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- 3-14-1 Hiyoshi, Kohoku-ku
- Japan
| | - Toshiaki Kamoshida
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- 3-14-1 Hiyoshi, Kohoku-ku
- Japan
| | - Hironori Tsunoyama
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- 3-14-1 Hiyoshi, Kohoku-ku
- Japan
| | - Atsushi Nakajima
- Keio Institute of Pure and Applied Sciences (KiPAS)
- Keio University
- 3-14-1, Hiyoshi
- Kohoku-ku
- Japan
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41
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Pham LN, Nguyen MT. Insights into Geometric and Electronic Structures of VGe 3-/0 Clusters from Anion Photoelectron Spectrum Assignment. J Phys Chem A 2017; 121:6949-6956. [PMID: 28845661 DOI: 10.1021/acs.jpca.7b07459] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The global minima of both neutral and anionic clusters of VGe3-/0 were determined using different quantum chemical methods (DFT, RCCSD(T), CASSCF/CASPT2). On the basis of the ground states identified, most excited bands in the anion photoelectron spectrum of VGe3- were assigned. The tetrahedral isomers of both charged states are the most stable ones. A singlet state (Cs, 1A') of the tetrahedral isomer has the globally lowest energy on the potential hypersurface of VGe3-. Two states 12A' and 12A″ of the neutral tetrahedral isomer are nearly degenerate and identified as the competing ground state of VGe3. From the anionic ground state, four of five bands in the anion photoelectron spectrum of VGe3- were determined to be the consequences of one-electron transitions starting from the anionic ground state 1A'. Both nearly degenerate neutral ground states are responsible for generation of the first band. Two different transitions from the anionic ground state 1A' to the first two nearly degenerate excited states (22A' and 22A″) of the neutral underlie the second lowest ionization band. Two higher levels of ionization recorded in the spectrum were assigned to the two higher excited states 42A' and 52A' of the neutral. Franck-Condon factor simulations of the first band were performed to obtain more insights into the experimental bands of the spectrum.
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Affiliation(s)
- Le Nhan Pham
- Department of Chemistry, KU Leuven , Celestijnenlaan 200F, 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.,Department of Chemistry, KU Leuven , Celestijnenlaan 200F, B-3001 Leuven, Belgium
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42
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Pham LN, Nguyen MT. Titanium Digermanium: Theoretical Assignment of Electronic Transitions Underlying Its Anion Photoelectron Spectrum. J Phys Chem A 2017; 121:1940-1949. [PMID: 28211685 DOI: 10.1021/acs.jpca.7b00245] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Electronic structures of both the anionic and neutral triatomic species TiGe2-/0 were theoretically studied employing single-reference (DFT and RCCSD(T)) and multiconfigurational (CASSCF/CASPT2 and CASSCF/NEVPT2) methods with large basis sets. The ground state of TiGe2- (C2v) was identified to be 4B1, but the 2A1 state is nearly degenerate, whereas the 3B1 is clearly the ground state of the neutral TiGe2 (C2v). On the basis of the computed ground and excited states of both neutral and anionic structures, all electronic transitions giving rise to experimental anion photoelectron bands in the spectrum of TiGe2- can now be assigned. The X band of the anion photoelectron spectrum is attributed to a one-electron transition between two ground states 4B1 → 3B1. Three neutral excited states 23A2, 25B1, and 35B1 are energetically responsible for the B band upon one-electron photodetachement from the anionic ground state 4B1. The C band is assigned to the transition 4B1 → 25A1. A transition from the nearly degenerate ground state 2A1 of the anion to the low-spin 1A1 of the final neutral state can be ascribed to the A band. Furthermore, the first two bands' progressions, whose normal vibrational modes were accessible from CASSCF/CASPT2 calculations, were also simulated by determination of multidimensional Franck-Condon factors.
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Affiliation(s)
- Le Nhan Pham
- Department of Chemistry, KU Leuven , Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Minh Tho Nguyen
- Computational Chemistry Research Group, Ton Duc Thang University , Ho Chi Minh City, 778000 Vietnam.,Faculty of Applied Sciences, Ton Duc Thang University , Ho Chi Minh City, 778000 Vietnam.,Department of Chemistry, KU Leuven , Celestijnenlaan 200F, B-3001 Leuven, Belgium
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43
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Akutsu M, Koyasu K, Atobe J, Miyajima K, Mitsui M, Tsunoyama H, Nakajima A. Geometric and electronic properties of Si-atom doped Al clusters: robustness of binary superatoms against charging. Phys Chem Chem Phys 2017; 19:20401-20411. [DOI: 10.1039/c7cp03409a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Chemically stabilized binary superatoms are formed with Si-atom doping into Al superatoms.
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Affiliation(s)
- Minoru Akutsu
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
| | - Kiichirou Koyasu
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
| | - Junko Atobe
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
| | - Ken Miyajima
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
| | - Masaaki Mitsui
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
| | - Hironori Tsunoyama
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
| | - Atsushi Nakajima
- Department of Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
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44
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Deng XJ, Kong XY, Xu XL, Xu HG, Zheng WJ. Photoelectron Spectroscopy and Density Functional Calculations of TiGen− (n=7–12) Clusters. CHINESE J CHEM PHYS 2016. [DOI: 10.1063/1674-0068/29/cjcp1511232] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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45
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Growth behavior and electronic structure of neutral and anion ZrGe n ( n = 1–21) clusters. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2015.11.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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46
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Lu SJ, Hu LR, Xu XL, Xu HG, Chen H, Zheng WJ. Transition from exohedral to endohedral structures of AuGen− (n = 2–12) clusters: photoelectron spectroscopy and ab initio calculations. Phys Chem Chem Phys 2016; 18:20321-9. [DOI: 10.1039/c6cp00373g] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
AuGe12− has an Ih symmetric endohedral icosahedral structure. It also shows 3D aromaticity.
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Affiliation(s)
- Sheng-Jie Lu
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Molecular Reaction Dynamics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Lian-Rui Hu
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - 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
| | - 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
| | - Hui Chen
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Photochemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing
| | - 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
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47
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Shibuta M, Ohta T, Nakaya M, Tsunoyama H, Eguchi T, Nakajima A. Chemical Characterization of an Alkali-Like Superatom Consisting of a Ta-Encapsulating Si16 Cage. J Am Chem Soc 2015; 137:14015-8. [DOI: 10.1021/jacs.5b08035] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | | | - Masato Nakaya
- Nakajima
Designer Nanocluster Assembly Project, JST-ERATO, 3-2-1 Sakado, Takatsu-ku, Kawasaki 213-0012, Japan
| | - Hironori Tsunoyama
- Nakajima
Designer Nanocluster Assembly Project, JST-ERATO, 3-2-1 Sakado, Takatsu-ku, Kawasaki 213-0012, Japan
| | - Toyoaki Eguchi
- Nakajima
Designer Nanocluster Assembly Project, JST-ERATO, 3-2-1 Sakado, Takatsu-ku, Kawasaki 213-0012, Japan
| | - Atsushi Nakajima
- Nakajima
Designer Nanocluster Assembly Project, JST-ERATO, 3-2-1 Sakado, Takatsu-ku, Kawasaki 213-0012, Japan
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48
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Borshch NA, Pereslavtseva NS, Kurganskii SI. Spatial structure and electron energy spectra of ScGe n − (n = 6–16) clusters. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2015. [DOI: 10.1134/s1990793115010030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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49
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Dhaka K, Bandyopadhyay D. Study of the electronic structure, stability and magnetic quenching of CrGen (n = 1–17) clusters: a density functional investigation. RSC Adv 2015. [DOI: 10.1039/c5ra13849c] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The current DFT based study of CrGen (n = 1–20) series shows that the enhanced stability of the ground state clusters CrGe10 and CrGe14 can be explained by means of 18-electron rule. However, it cannot be applied for highly symmetric CrGe12 cluster.
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Affiliation(s)
- Kapil Dhaka
- Department of Physics
- Birla Institute of Technology and Science
- Pilani
- India
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50
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Nakaya M, Iwasa T, Tsunoyama H, Eguchi T, Nakajima A. Formation of a superatom monolayer using gas-phase-synthesized Ta@Si16 nanocluster ions. NANOSCALE 2014; 6:14702-14707. [PMID: 25286979 DOI: 10.1039/c4nr04211e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The controlled assembly of superatomic nanocluster ions synthesized in the gas phase is a key technology for constructing a novel series of functional nanomaterials. However, it is generally difficult to immobilize them onto a conductive surface while maintaining their original properties owing to undesirable modifications of their geometry and charge state. In this study, it has been shown that this difficulty can be overcome by controlling the donor-acceptor interaction between nanoclusters and surfaces. Cations of Ta-atom-encapsulated Si(16) cage nanoclusters (Ta@Si(16)) behaving as rare-gas-like superatoms are synthesized in the gas phase and deposited on conductive surfaces terminated with acceptor-like C(60) and donor-like α-sexithiophene (6 T) molecules. Scanning tunneling microscopy and spectroscopy have demonstrated that Ta@Si(16) cations can be densely immobilized onto C(60)-terminated surfaces while retaining their cage shape and positive charge, which is realized by creating binary charge transfer complexes (Ta@Si(16)(+)-C(60)(-)) on the surfaces. The Ta@Si(16) nanoclusters exhibit excellent thermal stability on C(60-)terminated surfaces similar to those in the gas phase, whereas the nanoclusters destabilize at room temperature on 6 T-terminated surfaces owing to the loss of electronic closure via a change in the charge state.
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Affiliation(s)
- Masato Nakaya
- Nakajima Designer Nanocluster Assembly Project, ERATO, JST, KSP, 3-2-1 Sakado, Takatsu-ku, Kawasaki 213-0012, Japan.
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