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Structure and electronic properties of [AunV]λ (n = 1–9; λ = 0, ± 1) nanoalloy clusters within density functional theory framework. Theor Chem Acc 2021. [DOI: 10.1007/s00214-021-02772-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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2
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Investigation of size dependence of the properties of Cu nanoclusters using molecular dynamics simulations. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.03.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Metallic Clusters: Theoretical Background, Properties and Synthesis in Microemulsions. Catalysts 2014. [DOI: 10.3390/catal4040356] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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4
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Jaque P, Toro-Labbé A. Polarizability of neutral copper clusters. J Mol Model 2014; 20:2410. [PMID: 25149439 DOI: 10.1007/s00894-014-2410-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 07/30/2014] [Indexed: 11/24/2022]
Abstract
Neutral copper clusters are characterized through their molecular structures, binding energy and electric dipole polarizability. It is shown that the mean and anisotropy of polarizability tensor are useful properties in the characterization and rationalization of reactivity and growth patterns in copper clusters. We also found a relationship between softness per atom and cubic root polarizability per atom which can be useful to get global softness in copper clusters.
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Affiliation(s)
- Pablo Jaque
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andres Bello, República 275, Santiago, Chile,
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Calaminici P, Pérez-Romero M, Vásquez-Pérez JM, Köster AM. On the ground state structure of neutral Cun (n=12,14,16,18,20) clusters. COMPUT THEOR CHEM 2013. [DOI: 10.1016/j.comptc.2013.06.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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6
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Martínez G, Tangarife E, Pérez M, Mejía-López J. Magnetic properties of small cobalt-copper clusters. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2013; 25:216003. [PMID: 23644392 DOI: 10.1088/0953-8984/25/21/216003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Accurate first-principle calculations on bimetallic cobalt-copper clusters of up to six atoms (Pérez et al 2012 J. Nanopart. Res. 14 933) revealed a close similarity of the ground-state magnetic properties to the ultimate jellium model, provided that a 2D to 3D geometric transition was invoked. We discuss this relationship in terms of partial occupancies of the valence electrons in both cases, with the jellium results described by nonperturbative spherical wavefunctions. Based upon this, we propose a scheme to predict magnetic properties of cobalt-copper clusters of up to twenty atoms using arguments of dimensionality and charge localization, and confirm some of these results with other independent density-functional calculations and experimental available data. The comparison with experiments is carried out for neutral and singly ionized cobalt clusters. Furthermore, a many-body tight-binding pseudopotential is used with Monte Carlo techniques to verify the stability of these new first-principle solutions.
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Affiliation(s)
- G Martínez
- Instituto de Física, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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7
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Li SC, Li Y, Wu D, Li ZR. Density functional study of structural and electronic properties of small binary Be(n)Cu(m) (n + m = 2~7) clusters. J Mol Model 2013; 19:3065-75. [PMID: 23584555 DOI: 10.1007/s00894-013-1831-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2012] [Accepted: 03/19/2013] [Indexed: 11/29/2022]
Abstract
The geometrical structures, electronic properties and relative stabilities of small bimetallic Be n Cu m (n + m = 2-7) clusters have been systematically investigated by using a density functional method at the B3PW91 level. In the most stable structures of Be n Cu m , the Be atoms tend to gather together and construct similar configurations to those of pure Be n clusters. Meanwhile, there is a tendency for Cu atoms to segregate toward the Be n cluster surface. The successive binding energies, cohesive energies, second difference of energies, the highest occupied-lowest unoccupied molecular orbital energy gaps and chemical hardness of Be n Cu m are also investigated. All of them demonstrate that the clusters with even number of copper atoms present relatively higher stabilities. The natural population analyses on the Be n Cu m clusters reveal that, the charge transfers from Be to Cu when the average coordination numbers (Nc) of Be atom is less than 3, whereas the charge-transferring direction reverses when Nc(Be) increases.
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Affiliation(s)
- Si-Cheng Li
- Institute of Theoretical Chemistry, State Key Laboratory of Theoretical and Computational Chemistry, Jilin University, Changchun 130023, People's Republic of China
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8
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Jiang M, Zeng Q, Zhang T, Yang M, Jackson KA. Icosahedral to double-icosahedral shape transition of copper clusters. J Chem Phys 2012; 136:104501. [PMID: 22423842 DOI: 10.1063/1.3689442] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The lowest-energy isomers of Cu(N) clusters for N = 20-30 are identified using an unbiased search algorithm and density functional theory calculations. The low-energy structures over this size range are dominated by those based on a 13-atom icosahedral (I(h)) core and a 19-atom double icosahedron (DI(h)) core. A transition in the ground-state isomers from I(h)-based to DI(h)-based structures is predicted overt N = 21-23. We discuss this transition in the broader context of the growth pattern for Cu(N) over N = 2-30 that features regions of gradual evolution in which atoms successively add to the cluster surface, separated by sudden changes to a different structural organization and more compact shape. These transitions result from a competition between interatomic bonding energy and surface energy. The implications of this growth pattern for the further evolution of copper from microstructure to bulk are discussed.
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Affiliation(s)
- Minglong Jiang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, People's Republic of China
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9
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von Szentpály L. Reply to “Comment on 'Ruling Out Any Electrophilicity Equalization Principle'”. J Phys Chem A 2011. [DOI: 10.1021/jp210486g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- László von Szentpály
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D 70569 Stuttgart, Germany
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10
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Structural effects of amphiphilic block copolymers on the gold nanoplates synthesis. Experimental and theoretical study. Eur Polym J 2011. [DOI: 10.1016/j.eurpolymj.2011.07.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Yuan X, Liu L, Wang X, Yang M, Jackson KA, Jellinek J. Theoretical Investigation of Adsorption of Molecular Oxygen on Small Copper Clusters. J Phys Chem A 2011; 115:8705-12. [DOI: 10.1021/jp200125t] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiuxiang Yuan
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Liuxia Liu
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Xin Wang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Mingli Yang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Koblar Alan Jackson
- Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, United States
| | - Julius Jellinek
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
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12
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Abstract
Two gas-phase electrophilicity indices, ω(1) and ω(2), introduced by Parr, von Szentpály, and Liu are tested with respect to the recently proposed "principle of electrophilicity equalization." Although electronegativity is equalized in many cases, there is no functioning "hardness equalization principle" nor are the electrophilicity indices principally equalized during molecule formation: they cannot be generally expressed as the mean of the corresponding atomic indices. For large metal clusters and [n]fullerenes, both electrophilicity indices increase proportional to n(1/3) and n(1/2), respectively, as the hardness values converge to zero. Two "principles" are shown to be obsolete: the "geometric mean principle for hardness equalization" and the "principle of electrophilicity equalization", with the latter somewhat relying on the former. An appeal is made to exercise careful judgment before proposing and publishing new structural principles.
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Affiliation(s)
- László von Szentpály
- Institut für Theoretische Chemie, Universität Stuttgart, Pfafffenwaldring 55, D 70569 Stuttgart, Germany.
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13
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Chu X, Yang M, Jackson KA. The effect of geometry on cluster polarizability: Studies of sodium, copper, and silicon clusters at shape-transition sizes. J Chem Phys 2011; 134:234505. [DOI: 10.1063/1.3598518] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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14
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Affiliation(s)
- Pratim Kumar Chattaraj
- Department of Chemistry, Center for Theoretical Studies, Indian Institute of Technology, Kharagpur, India
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15
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Padilla-Campos L. Theoretical investigation of the adsorption of carbon monoxide on small bimetallic LimCun (m,n⩽4) clusters. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.theochem.2008.10.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Calaminici P. Is the trend of the polarizability per atom for all small 3d transition metal clusters the same? The case of Nin (n⩽5) clusters. J Chem Phys 2008; 128:164317. [DOI: 10.1063/1.2909201] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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17
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18
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López Arvizu G, Calaminici P. Assessment of density functional theory optimized basis sets for gradient corrected functionals to transition metal systems: The case of small Nin (n⩽5) clusters. J Chem Phys 2007; 126:194102. [PMID: 17523793 DOI: 10.1063/1.2735311] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Density functional calculations have been performed for small nickel clusters, Ni(n), Ni(n) (+), and Ni(n)(-) (n<or=5), using the linear combination of Gaussian-type orbital density functional theory approach. Newly developed nickel all-electron basis sets optimized for generalized gradient approximation (GGA) as well as an all-electron basis set optimized for the local density approximation were employed. For both neutral and charged systems, several isomers and different multiplicities were studied in order to determine the lowest energy structures. A vibrational analysis was performed in order to characterize these isomers. Structural parameters, harmonic frequencies, binding energies, ionization potentials, and electron affinities are reported. This work shows that the employed GGA basis sets for the nickel atom are important for the correct prediction of the ground state structures of small nickel clusters and that the structural assignment of these systems can be performed, with a good resolution, over the ionization potential.
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Affiliation(s)
- Gregorio López Arvizu
- Departamento de Quimica, CINVESTAV, Avenida Instituto Politecnico Nacional 2508, Apartado Postal 14-740 07000 Mexico, Distrito Federal Mexico
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Calaminici P, Köster AM, Gómez-Sandoval Z. Density Functional Study of the Structure and Properties of Cu9 and Cu9-. J Chem Theory Comput 2007; 3:905-13. [DOI: 10.1021/ct600358a] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Patrizia Calaminici
- Departamento de Química, CINVESTAV, Av. Instituto Politécnico Nacional 2508, AP 14-740, México D.F. 07000, México
| | - Andreas M. Köster
- Departamento de Química, CINVESTAV, Av. Instituto Politécnico Nacional 2508, AP 14-740, México D.F. 07000, México
| | - Zeferino Gómez-Sandoval
- Departamento de Química, CINVESTAV, Av. Instituto Politécnico Nacional 2508, AP 14-740, México D.F. 07000, México
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20
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Florez E, Mondragón F, Fuentealba P. Effect of Ni and Pd on the Geometry, Electronic Properties, and Active Sites of Copper Clusters. J Phys Chem B 2006; 110:13793-8. [PMID: 16836325 DOI: 10.1021/jp060521u] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The geometry, electronic properties, and active sites of copper clusters doped with Ni or Pd atoms, Cu(n)()(-)(1)M (n = 2-6; M = Ni, Pd) have been investigated using first-principles methods. Planar structures are energetically favorable in Cu(n)()(-)(1)Ni (n = 2-6). However, for Pd-doped clusters, three-dimensional structures are competitive in energy, and for n = 6, the most stable structure is not planar. Several properties of doped copper clusters present odd-even oscillations as the number of copper atoms grow. The different atomic ground-state configuration of Ni and Pd determines the bonding and electronic properties of doped copper clusters. The interaction between impurities and copper atoms can modify the chemical hardness and active sites of doped copper clusters markedly inducing directionality in the reactivity. This effect is relevant to the behavior of catalysts as well as in the growth of metallic films.
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Affiliation(s)
- Elizabeth Florez
- Institute of Chemistry, University of Antioquia, A.A. 1226, Medellín, Colombia
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21
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Poater A, Duran M, Jaque P, Toro-Labbé A, Solà M. Molecular Structure and Bonding of Copper Cluster Monocarbonyls CunCO (n = 1−9). J Phys Chem B 2006; 110:6526-36. [PMID: 16570950 DOI: 10.1021/jp054690a] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this work we analyze CO binding on small neutral copper clusters, Cun (n = 1-9). Molecular structures and reactivity descriptors of copper clusters are computed and discussed. The results show that the condensed Fukui functions and the frontier molecular orbital theory are useful tools to predict the selectivity of CO adsorption on these small clusters. To get further insight into the CO binding to copper clusters, an energy decomposition analysis of the CO binding energy is performed. The Cs symmetry of the formed CunCO clusters (n = 1-8) allows the separation between the orbital interaction terms corresponding to donation and back-donation. It is found that, energetically, the donation is twice as important as back-donation.
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Affiliation(s)
- Albert Poater
- Institut de Química Computacional and Departament de Química, Universitat de Girona, E-17071 Girona, Catalonia, Spain
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