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Lu K, Gao W, Xu M, Sun Y, Li J, Yao X, Liu Y, Zhang X. Spin Transport Properties of One-Dimensional Benzene Ligand Organobimetallic Sandwich Molecular Wires. ACS OMEGA 2020; 5:5534-5539. [PMID: 32201846 PMCID: PMC7081641 DOI: 10.1021/acsomega.0c00206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 02/26/2020] [Indexed: 06/10/2023]
Abstract
Organometallic sandwich complexes, composed of cyclic hydrocarbon ligands and transition-metal atoms, display unique physical and chemical properties. In this work, the electronic and spin transport properties of one-dimensional (1D) VBz2 ligand bimetallic sandwich complexes, VBz2-TM (TM = Cr, Mn, and Fe), are systematically investigated using density functional theory and nonequilibrium Green's function method. The results show that all the 1D infinite molecular wires [(VBz2)TM]∞ (TM = Cr-Fe) are found to be thermodynamically stable with high binding energies (∼1.0-3.45 eV). In particular, they are predicted to be ferromagnetic half metals. Moreover, the I-V curves exhibit negative differential resistance for one, two, and three VBz2-TM wires at TM = Cr, Mn, and Fe, respectively, which is of great significance for certain electronic applications. Our findings strongly suggest that the benzene ligand bimetallic sandwich molecular wires are good candidates for potential electronics and spintronics.
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Affiliation(s)
- Keyu Lu
- College
of Physics Science and Technology, Yangzhou
University, Yangzhou 225002, China
| | - Weicheng Gao
- College
of Physics Science and Technology, Yangzhou
University, Yangzhou 225002, China
| | - Mingxia Xu
- College
of Physics Science and Technology, Yangzhou
University, Yangzhou 225002, China
| | - Yi Sun
- College
of Physics Science and Technology, Yangzhou
University, Yangzhou 225002, China
| | - Jie Li
- College
of Physics Science and Technology, Yangzhou
University, Yangzhou 225002, China
| | - Xiaojing Yao
- Department
of Physics, Hebei Advanced Thin Films Laboratory, Hebei Normal University, Shijiazhuang 050024, China
| | - Yongjun Liu
- College
of Physics Science and Technology, Yangzhou
University, Yangzhou 225002, China
| | - Xiuyun Zhang
- College
of Physics Science and Technology, Yangzhou
University, Yangzhou 225002, China
- Shandong
Key Laboratory of Biochemical Analysis; College of Chemistry and Molecular
Engineering, Qingdao University of Science
and Technology, Qingdao 266042, PR China
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Gao W, Yao X, Sun Y, Sun W, Liu H, Liu J, Liu Y, Zhang X. Theoretical Study on Sandwich-Like Transition-Metal-Cyclooctatetraene Clusters and One-Dimensional Infinite Molecular Wires. ACS OMEGA 2019; 4:9739-9744. [PMID: 31460064 PMCID: PMC6648966 DOI: 10.1021/acsomega.9b00637] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 05/09/2019] [Indexed: 06/10/2023]
Abstract
Using density functional theory calculations, we investigated the structure and electronic properties of cyclooctatetraene (C8H8, COT)-ligand mono- or bi-transition-metal (M) sandwich clusters, M n (COT) n+1 (M = Sc, Ti, Cr, Mn, n = 1, 2) or (COT)M1(COT)M2(COT), as well as their one-dimensional infinite molecular wires. All the sandwich M-COT clusters and molecular wires are rather stable with their binding energies ranging from 3.20 to 7.48 eV per transition-metal atom. Superior to M n Bz n+1 complexes, most sandwich M-COT complexes are in their high spin states with ultrahigh magnetic moments. Moreover, one-dimensional infinite molecular wires, [Cr(COT)]∞, [(COT)V(COT)Ti]∞ and [(COT)Sc(COT)Cr]∞, are predicted to be ferromagnetic half-metals. Our findings suggest that such M-COT sandwich complexes may be potential candidates for applications in spintronics.
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Affiliation(s)
- Weicheng Gao
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Xiaojing Yao
- College of Physics Science and Information Engineering, Hebei Normal University, No. 20 Road East. 2nd Ring South, Yuhua District, Shijiazhuang 050024, China
| | - Yi Sun
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Weikang Sun
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Hongfei Liu
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Jianshuang Liu
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Yongjun Liu
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Xiuyun Zhang
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
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Niaz S, Pandith AH. Transition‐Metal‐Based Multidecker Complexes as Hydrogen Storage Materials: A Theoretical Study. ChemistrySelect 2019. [DOI: 10.1002/slct.201900372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Saba Niaz
- Department of ChemistryUniversity of Kashmir Srinagar - 190006, J&K India
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Ketkov S, Rychagova E. Electronic excited states of mixed sandwich complexes, (η7-C7H7)(η5-C5H5)M (M = V, Cr): Investigation with time-dependent density functional theory. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wang X, Wang Q, Yuan C, Zhao XF, Li JJ, Li D, Wu YB, Wang X. The degree of π electron delocalization and the formation of 3D-extensible sandwich structures. Phys Chem Chem Phys 2016; 18:11942-50. [PMID: 27004750 DOI: 10.1039/c5cp07372c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
DFT B3LYP/6-31G(d) calculations were performed to examine the feasibility of graphene-like C42H18 and starbenzene C6(BeH)6 (SBz) polymers as ligands of 3D-extensible sandwich compounds (3D-ESCs) with uninterrupted sandwich arrays. The results revealed that sandwich compounds with three or more C42H18 ligands were not feasible. The possible reason may be the localization of π electrons on certain C6 hexagons due to π-metal interactions, which makes the whole ligand lose its electronic structure basis (higher degree of π electron delocalization) to maintain the planar structure. For comparison, with the aid of benzene (Bz) molecules, the SBz polymers can be feasible ligands for designing 3D-ESCs because the C-Be interactions in individual SBz are largely ionic, which will deter the π electrons on one C6 ring from connecting to those on neighbouring C6 rings. This means that high degree of π electron delocalization is not necessary for maintaining the planarity of SBz polymers. Such a locally delocalized π electron structure is desirable for the ligands of 3D-ESCs. Remarkably, the formation of a sandwich compound with SBz is thermodynamically more favourable than that found for bis(Bz)chromium. The assembly of 3D-ESCs is largely exothermic, which will facilitate future experimental synthesis. The different variation trends on the HOMO-LUMO gaps in different directions (relative to the sandwich axes) suggest that they can be developed to form directional conductors or semiconductors, which may be useful in the production of electronic devices.
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Affiliation(s)
- Xiang Wang
- Key Laboratory of Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China.
| | - Qiang Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, The Chinese Academy of Sciences, Taiyuan, Shanxi 030001, People's Republic of China
| | - Caixia Yuan
- Key Laboratory of Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China.
| | - Xue-Feng Zhao
- Key Laboratory of Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China.
| | - Jia-Jia Li
- Key Laboratory of Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China.
| | - Debao Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, The Chinese Academy of Sciences, Taiyuan, Shanxi 030001, People's Republic of China
| | - Yan-Bo Wu
- Key Laboratory of Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China.
| | - Xiaotai Wang
- Department of Chemistry, University of Colorado Denver, Campus Box 194, P.O. Box 173364, Denver, Colorado 80217-3364, USA
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Yan X, Li X, Sun Z, Li Q, Meng L. Dinuclear first-row transition metal–(C8Me6)2complexes: metal–metal and metal–ligand bonds determined by the d electron configuration of the metal atom. NEW J CHEM 2016. [DOI: 10.1039/c5nj02469b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The nature and strength of the metal–metal and metal–ligand bonds depend on the d electron configuration of the transition metal.
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Affiliation(s)
- Xiuli Yan
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang
- China
- Key Laboratory of Inorganic Nano-materials of Hebei Province
| | - Xiaoyan Li
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang
- China
- Key Laboratory of Inorganic Nano-materials of Hebei Province
| | - Zheng Sun
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang
- China
- Key Laboratory of Inorganic Nano-materials of Hebei Province
| | - Qingzhong Li
- The Laboratory of Theoretical and Computational Chemistry
- Science and Engineering College of Chemistry and Biology
- Yantai University
- Yantai
- China
| | - Lingpeng Meng
- College of Chemistry and Material Science
- Hebei Normal University
- Shijiazhuang
- China
- Key Laboratory of Inorganic Nano-materials of Hebei Province
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Zhang X, Bian Y, Sun W, Hu T, Liu Y. Electronic and magnetic properties regulation of finite to infinite half sandwich organo-transition-metal-complexes functionalized graphene. RSC Adv 2016. [DOI: 10.1039/c6ra19951h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Total band gaps (Δt) and band gaps of free “graphene”, ignoring impurity bands of TMnOLs (Δg).
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Affiliation(s)
- Xiuyun Zhang
- School of Physics Science and Technology
- Yangzhou University
- Yangzhou 225002
- China
| | - Yajie Bian
- School of Physics Science and Technology
- Yangzhou University
- Yangzhou 225002
- China
| | - Weikang Sun
- School of Physics Science and Technology
- Yangzhou University
- Yangzhou 225002
- China
| | - Ting Hu
- Department of Applied Physics
- Key Laboratory of Soft Chemistry and Functional Materials (Ministry of Education)
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
| | - Yongjun Liu
- School of Physics Science and Technology
- Yangzhou University
- Yangzhou 225002
- China
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Ma Y, Dai Y, Li X, Li Z, Huang B. First-principles study of one-dimensional sandwich wires [(P)₅TM]∞ (TM = Ti, V, Cr, Mn, Fe, Co). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2013; 25:395503. [PMID: 24002217 DOI: 10.1088/0953-8984/25/39/395503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Since the discovery of ferrocene, many one-dimensional metallic sandwich molecular wires have been identified. However, most of the known systems are assembled from organic molecules. Suffering from many drawbacks has, however, hampered their widespread applications. With the goal of breaking this logjam, we provide a blueprint for the designing of a variety of novel sandwich molecular wires ([(P)5TM]∞, TM = Ti, V, Cr, Mn, Fe, and Co) assembled from ferrocene-like inorganic molecules (P)5TM, offering evidence of the existence of inorganic molecular wires in this class. We present first-principles calculations to investigate systematically the electronic and magnetic properties of such novel inorganic sandwich molecular wires. Compared with the organic molecular wires, all the inorganic [(P)5TM]∞ wires are of large magnetic moment. Among them, we find that [(P)5V]∞, [(P)5Cr]∞ and [(P)5Mn]∞ display ferromagnetic character, while for [(P)5Ti]∞, [(P)5Fe]∞ and [(P)5Co]∞, the magnetic coupling is antiferromagnetic. More remarkably, the TM atoms distributed in these wires show regular docking and lead to structures with ordered spin signals, which is a long-term dream of spintronics. We propose that the difference in magnetic coupling for the studied systems is related to the competition between two exchange interactions of TM atoms. Specifically, we propound that the general mechanism for the formation of stable 1D [(P)5TM]∞ involves the transfer of one electron from the TM atom to the P5 ligand forming [Formula: see text] and TM(+) alternating structure.
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Affiliation(s)
- Yandong Ma
- School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
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Zhang T, Tian Z, Zhu L, Zhang X, Chen Q, Wang J. Theoretical investigations on structural, electronic, and magnetic properties of TM2Np2 (Np=Naphthalene, TM=Sc–Ni) sandwich clusters. COMPUT THEOR CHEM 2013. [DOI: 10.1016/j.comptc.2013.02.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Yang Z, Liu S, Liu X, Yang Y, Li X, Xiong S, Xu B. The magnetic and quantum transport properties of benzene-vanadium-borazine mixed sandwich clusters: a new kind of spin filter. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2012; 24:445501. [PMID: 23044517 DOI: 10.1088/0953-8984/24/44/445501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Using density functional theory and the non-equilibrium Green's function technique, we performed theoretical investigations on the magnetic and quantum transport properties of benzene-vanadium-borazine mixed organic/inorganic ligand sandwich clusters. The calculated results show that these finite sandwich clusters coupled to Ni electrodes exhibit novel quantum transport properties such as half-metallicity, negative differential resistance and spin-reversal effect, and can be viewed as a new kind of spin filter. However, for the infinite molecular wire, the ground state was identified as a ferromagnetic semiconductor with high stability. These findings suggest that the mixed organic/inorganic ligand sandwich clusters and molecular wires are promising materials for application in molecular electronics and spintronics.
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Affiliation(s)
- Zhi Yang
- College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China.
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Zhang T, Zhu L, Wu Q, Yang SW, Wang J. Structures and magnetism of multinuclear vanadium-pentacene sandwich clusters and their 1D molecular wires. J Chem Phys 2012; 137:164309. [PMID: 23126712 DOI: 10.1063/1.4759505] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Two types of multinuclear sandwich clusters, (V(3))(n)Pen(n+1), (V(4))(n)Pen(n+1) (Pen = Pentacene; n = 1, 2), and their corresponding infinite one-dimensional (1D) molecular wires ([V(3)Pen](∞), [V(4)Pen](∞)) are investigated theoretically, especially on their magnetic coupling mechanism. These sandwich clusters and molecular wires are found to be of high stability and exhibit intriguing magnetic properties. The intra-layered V atoms in (V(3))(n)Pen(n+1) clusters prefer antiferromagnetic (AFM) coupling, while they can be either ferromagnetic (FM) or AFM coupling in (V(4))(n)Pen(n+1) depending on the intra-layered V-V distances via direct exchange or superexchange mechanism. The inter-layered V atoms favor FM coupling in (V(3))(2)Pen(3), whereas they are AFM coupled in (V(4))(2)Pen(3). Such magnetic behaviors are the consequence of the competition between direct exchange and superexchange interactions among inter-layered V atoms. In contrast, the 1D molecular wires, [V(3)Pen](∞) and [V(4)Pen](∞), appear to be FM metallic with ultra high magnetic moments of 6.8 and 4.0 μ(B) per unit cell respectively, suggesting that they can be served as good candidates for molecular magnets.
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Affiliation(s)
- Tingting Zhang
- Department of Physics, Southeast University, Nanjing 211189, People's Republic of China
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Das B, De Raychaudhury M. Electronic structure and transport properties of early transition metal tripledeckers. J Chem Phys 2011; 134:014709. [PMID: 21219022 DOI: 10.1063/1.3524535] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The electronic structure and transport properties of the Cp(2)BzM(2) (M = Sc, Ti, and V) tripledeckers are studied by spin polarized density functional theory and nonequilibrium Green's function method considering high-spin and low-spin states. Total energy calculations show that the sandwich structured Cp(2)BzSc(2) exists in a singlet state with no local magnetic moment on the Sc atoms. Cp(2)BzTi(2) in triplet state exists as a distorted tripledecker and is more stable than singlet and quintet states. Cp(2)BzV(2) stabilizes in the quintet state with a spin density of 2.4 on each vanadium atom. Hund's coupling plays a vital role in stabilizing the higher multiplets in case of titanium and vanadium clusters. In bigger clusters like Cp(3)Bz(2)M(4), Sc multidecker has one unpaired spin, Ti multidecker has five unpaired spins, and V multidecker has seven unpaired spins in total. Spin polarized electronic transport is found for all states of vanadium tripledecker and one state of the titanium tripledecker when connected to a gold two probe junction. Moderate to high-spin filter efficiencies are calculated for these states. Cp(2)BzSc(2) shows spin-independent electronic transport for all electronic states when introduced in the gold two probe junction. Current versus voltage curves are reported for selected clusters in the two probe setup.
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Affiliation(s)
- Bidisa Das
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.
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Zhu L, Zhang T, Yi M, Wang J. Ab Initio Study on Mixed Inorganic/Organic Ligand Sandwich Clusters: BzTMC60, TM = Sc−Co. J Phys Chem A 2010; 114:9398-403. [DOI: 10.1021/jp106129r] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Liyan Zhu
- Department of Physics, Southeast University, Nanjing, 211189, People’s Republic of China
| | - Tingting Zhang
- Department of Physics, Southeast University, Nanjing, 211189, People’s Republic of China
| | - Mengxi Yi
- Department of Physics, Southeast University, Nanjing, 211189, People’s Republic of China
| | - Jinlan Wang
- Department of Physics, Southeast University, Nanjing, 211189, People’s Republic of China
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