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Aleinikava D, Jellinek J. Analysis of Dynamical Peculiarities in Nanoalloys at Subsystems Level: Dynamical Degrees of Freedom, Temperature Differences, and the Chameleon Effect. Chemphyschem 2023; 24:e202300184. [PMID: 37582049 DOI: 10.1002/cphc.202300184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 08/17/2023]
Abstract
A novel analysis of the dynamical behavior of nanoalloy systems, as represented by model Ni/Al 13-atom clusters, over a broad range of energies that cover the stage-wise transition of the systems from their solid-like to liquid-like state is presented. Conceptually, the analysis is rooted in partitioning the systems into judiciously chosen subsystems and characterizing the latter in terms of subsystem-specific dynamical descriptors that include dynamical degrees of freedom, root-mean-square bond-length fluctuation, and element-specific subsystem temperature. The analysis reveals a host of intriguing new peculiarities in the dynamical behavior of the Ni/Al 13-mers, among which are what we call the chameleon effect and the difference in the temperatures of the Ni and Al subsystems at high energies, a difference that strongly depends on the cluster composition and also changes with energy. These do not have an analog in pure Ni13 and Al13 and are explained in terms of the coupled effects of the difference between the masses of the Ni and Al atoms (the mass effect) and of the difference in the anharmonicity of the overall interaction potential as experienced by the Ni and Al subsystems of the clusters (the potential effect).
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Affiliation(s)
- Darya Aleinikava
- Department of Physical Sciences, Benedictine University Lisle, Illinois, 60532, USA
- Chemical Sciences and Engineering Division, Argonne National Laboratory Lemont, Illinois, 60439, USA
| | - Julius Jellinek
- Chemical Sciences and Engineering Division, Argonne National Laboratory Lemont, Illinois, 60439, USA
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2
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Acioli PH, Zhang X, Bowen KH, Jellinek J. Electron Binding Energy Spectra of Al nPt - Clusters─A Combined Experimental and Computational Study. J Phys Chem A 2022; 126:4241-4247. [PMID: 35748874 DOI: 10.1021/acs.jpca.2c03116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Results of size-selected electron photo-detachment experiments and density functional theory calculations on anionic AlnPt-, n = 1-7, clusters are presented and analyzed. The measured and calculated spectra of electron binding energies are, overall, in excellent accord with each other. The analysis reveals the general importance of accounting for the multiplicity of structural forms of a given-size cluster that can contribute to its measured spectrum, especially when the clusters are fluxional and/or the conditions of the experiment allow for structural transitions. We show that for the systems studied here, the size-specific peculiarities of the measured spectra can be understood in terms of the combined contributions of corresponding different accessible stable equilibrium conformations, bona-fide transition-state configurations, and electronic-crossing structures that may play the role of effective barriers in electronically nonadiabatic dynamics.
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Affiliation(s)
- Paulo H Acioli
- Department of Physics, Northeastern Illinois University, Chicago, Illinois 60625, United States
| | - Xinxing Zhang
- Collaborative Innovation Center of Chemical Sciences and Engineering, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Kit H Bowen
- Departments of Chemistry and Materials Science, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Julius Jellinek
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60349, United States
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3
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Sumer A, Jellinek J. Computational Studies of Structural, Energetic and Electronic Properties of Pure Pt and Mo and Mixed Pt/Mo Clusters: Comparative Analysis of Characteristics and Trends. J Chem Phys 2022; 157:034301. [DOI: 10.1063/5.0099760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The added technological potential of bimetallic clusters and nanoparticles, as compared to their pure counterparts, stems from the ability to further fine-tune their properties, and, consequently, functionalities, through a simultaneous use of the "knobs" of size and composition. The practical realization of this potential can be greatly advanced by the knowledge of the correlations and relationships between the various characteristics of bimetallic nanosystems and those of their pure counterparts and constituent components. Here we present results of a density functional theory study of pure Ptn and Mon clusters aimed at revisiting and exploring further their structural, electronic and energetic properties. These are then used as a basis for analysis and characterization of the results of calculations on two-component Ptn-mMom clusters. The analysis also includes establishing relationships between the properties of the Ptn-mMom clusters and those of their Ptn-m and Mom components. A particularly intriguing findings suggested by the calculations is a linear dependence of the average binding energy per atom in sets of Ptn-mMom clusters that have the same fixed number m of Mo atoms and different number n-m of Pt atoms on the fractional content (n-m)/n of Pt atoms. We derive an analytical model that establishes the fundamental basis for this linearity and expresses its parameters - the m-dependent slope and intercept - in terms of characteristic properties of the constituent components, such as the average binding energy per atom of Mom and the average per-atom adsorption energy of the Pt atoms on Mom.
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Affiliation(s)
| | - Julius Jellinek
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, United States of America
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Jellinek J, Jackson KA. Universality in size-driven evolution towards bulk polarizability of metals. Nanoscale 2018; 10:17534-17539. [PMID: 30225480 DOI: 10.1039/c8nr06307a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The properties and characteristics of materials on the subnano/nano scale are very different from those of their bulk counterparts. The evolution of materials properties with size is the holy grail of nanoscience. An intriguing question then is: Can one predict what type of material (metal, semiconductor or insulator) an unidentified element will be, when in bulk quantities, solely from the properties it exhibits over a limited range of the subnano/nano size-regime? We demonstrate here that for nominally metallic elements (i.e., elements that are metals in bulk quantities) the answer to this question is "yes", and the very identity of the element also can be established. Most importantly, we show that the phenomenon of size-induced transition to metallicity, as gauged by polarizability, is characterized by features and trends that are universal for all metals. Combining numerical simulation data with an analytical model we introduce a universal constant and derive equations that express the universality explicitly.
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Affiliation(s)
- Julius Jellinek
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA.
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Huang Z, Liu D, Camacho-Bunquin J, Zhang G, Yang D, López-Encarnación JM, Xu Y, Ferrandon MS, Niklas J, Poluektov OG, Jellinek J, Lei A, Bunel EE, Delferro M. Supported Single-Site Ti(IV) on a Metal–Organic Framework for the Hydroboration of Carbonyl Compounds. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00544] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhiyuan Huang
- College of Chemistry & Molecular Sciences, Institute of Advanced Studies, Wuhan University, Wuhan 430072, PR China
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Dong Liu
- College of Chemistry & Molecular Sciences, Institute of Advanced Studies, Wuhan University, Wuhan 430072, PR China
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jeffrey Camacho-Bunquin
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Guanghui Zhang
- Department
of Biological and Chemical Sciences, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Dali Yang
- College of Chemistry & Molecular Sciences, Institute of Advanced Studies, Wuhan University, Wuhan 430072, PR China
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Juan M. López-Encarnación
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Department
of Mathematics-Physics, University of Puerto Rico at Cayey, Cayey, Puerto Rico 00736, United States
| | - Yunjie Xu
- Department
of Biological and Chemical Sciences, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Magali S. Ferrandon
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jens Niklas
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Oleg G. Poluektov
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Julius Jellinek
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Aiwen Lei
- College of Chemistry & Molecular Sciences, Institute of Advanced Studies, Wuhan University, Wuhan 430072, PR China
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Emilio E. Bunel
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Massimiliano Delferro
- Chemical Sciences & Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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6
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Affiliation(s)
- Koblar Jackson
- Physics Department and Science of Advanced Materials Program, Central Michigan University, Mount Pleasant, Michigan 48859, USA
| | - Julius Jellinek
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
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Abstract
Density of states is a fundamental physical characteristic that lies at the foundation of statistical mechanics and theoretical constructs that derive from them (e.g., kinetic rate theories, phase diagrams, and others). Even though most real physical systems are anharmonic, the vibrational density of states is customarily treated within the harmonic approximation, or with some partial, often limited, account for anharmonicity. The reason for this is that the problem of anharmonic densities of states stubbornly resisted a general and exact, yet convenient and straightforward in applications, solution. Here we formulate such a solution within both classical and quantum mechanics. It is based on actual dynamical behavior of systems as a function of energy and as observed, or monitored, on a chosen time scale, short or long. As a consequence, the resulting anharmonic densities of states are fully dynamically informed and, in general, time-dependent. As such, they lay the ground for formulation of new statistical mechanical frameworks that incorporate time and are ergodic, by construction, with respect to actual dynamical behavior of systems.
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Affiliation(s)
- Julius Jellinek
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Darya Aleinikava
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
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Rodríguez-Cantano R, González-Lezana T, Prosmiti R, Delgado-Barrio G, Villarreal P, Jellinek J. Publisher’s Note: “Reactive scattering calculations for 87Rb+87RbHe→Rb2(3Σu+,v)+He from ultralow to intermediate energies” [J. Chem. Phys. 142, 164304 (2015)]. J Chem Phys 2015; 142:189902. [DOI: 10.1063/1.4921246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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9
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Rodríguez-Cantano R, González-Lezana T, Prosmiti R, Delgado-Barrio G, Villarreal P, Jellinek J. Reactive scattering calculations for (87)Rb+(87)RbHe→Rb2((3)Σ(u)(+),v)+He from ultralow to intermediate energies. J Chem Phys 2015; 142:164304. [PMID: 25933761 DOI: 10.1063/1.4919062] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We investigate atom-diatom reactive collisions, as a preliminary step,in order to assess the possibility of forming Rb(2) molecules in their lowest triplet electronic state by cold collisions of rubidium atoms on the surface of helium nanodroplets [corrected]. A simple model related to the well-known Rosen treatment of linear triatomic molecules [N. Rosen, J. Chem. Phys. 1, 319 (1933)] in relative coordinates is used, allowing to estimate reactive probabilities for different values of the total angular momentum. The best available full dimensional potential energy surface [Guillon et al., J. Chem. Phys. 136, 174307 (2012)] is employed through the calculations. Noticeable values of the probabilities in the ultracold regime, which numerically fulfill the Wigner threshold law, support the feasibility of the process. The rubidium dimer is mainly produced at high vibrational states, and the reactivity is more efficient for a bosonic helium partner than when the fermion species is considered.
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Affiliation(s)
| | | | - Rita Prosmiti
- Instituto de Física Fundamental, IFF-CSIC, Serrano 123, 28006 Madrid, Spain
| | | | - Pablo Villarreal
- Instituto de Física Fundamental, IFF-CSIC, Serrano 123, 28006 Madrid, Spain
| | - Julius Jellinek
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
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10
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Affiliation(s)
- Adam W. Pelzer
- Department
of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Chemical Sciences
and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Department
of Physics and Science of Advanced Materials Ph.D. Program, Central Michigan University, Mt. Pleasant, Michigan 48859, United States
| | - Julius Jellinek
- Chemical Sciences
and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Koblar A. Jackson
- Department
of Physics and Science of Advanced Materials Ph.D. Program, Central Michigan University, Mt. Pleasant, Michigan 48859, United States
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11
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Lee JH, Luo G, Tung IC, Chang SH, Luo Z, Malshe M, Gadre M, Bhattacharya A, Nakhmanson SM, Eastman JA, Hong H, Jellinek J, Morgan D, Fong DD, Freeland JW. Dynamic layer rearrangement during growth of layered oxide films by molecular beam epitaxy. Nat Mater 2014; 13:879-83. [PMID: 25087067 DOI: 10.1038/nmat4039] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 06/19/2014] [Indexed: 05/24/2023]
Abstract
The A(n+1)B(n)O(3n+1) Ruddlesden-Popper homologous series offers a wide variety of functionalities including dielectric, ferroelectric, magnetic and catalytic properties. Unfortunately, the synthesis of such layered oxides has been a major challenge owing to the occurrence of growth defects that result in poor materials behaviour in the higher-order members. To understand the fundamental physics of layered oxide growth, we have developed an oxide molecular beam epitaxy system with in situ synchrotron X-ray scattering capability. We present results demonstrating that layered oxide films can dynamically rearrange during growth, leading to structures that are highly unexpected on the basis of the intended layer sequencing. Theoretical calculations indicate that rearrangement can occur in many layered oxide systems and suggest a general approach that may be essential for the construction of metastable Ruddlesden-Popper phases. We demonstrate the utility of the new-found growth strategy by performing the first atomically controlled synthesis of single-crystalline La3Ni2O7.
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Affiliation(s)
- J H Lee
- 1] X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA [2] [3]
| | - G Luo
- 1] Department of Materials Science &Engineering, University of Wisconsin-Madison, 1509 University Avenue Madison, Wisconsin 53706, USA [2]
| | - I C Tung
- 1] X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA [2] Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
| | - S H Chang
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Z Luo
- 1] Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA [2] National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - M Malshe
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - M Gadre
- Department of Materials Science &Engineering, University of Wisconsin-Madison, 1509 University Avenue Madison, Wisconsin 53706, USA
| | - A Bhattacharya
- 1] Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA [2] Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - S M Nakhmanson
- Department of Materials Science &Engineering, and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, USA
| | - J A Eastman
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - H Hong
- X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - J Jellinek
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Morgan
- Department of Materials Science &Engineering, University of Wisconsin-Madison, 1509 University Avenue Madison, Wisconsin 53706, USA
| | - D D Fong
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - J W Freeland
- X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
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López-Encarnación JM, Tanabe KK, Johnson MJA, Jellinek J. Inside Cover: Characterizing Metal Coordination Environments in Porous Organic Polymers: A Joint Density Functional Theory and Experimental Infrared Spectroscopy Study (Chem. Eur. J. 41/2013). Chemistry 2013. [DOI: 10.1002/chem.201390160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Affiliation(s)
- Adam W. Pelzer
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Department
of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, United States
- Department
of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Julius Jellinek
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Koblar A. Jackson
- Department
of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, United States
- Department
of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
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14
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López-Encarnación JM, Tanabe KK, Johnson MJA, Jellinek J. Characterizing Metal Coordination Environments in Porous Organic Polymers: A Joint Density Functional Theory and Experimental Infrared Spectroscopy Study. Chemistry 2013; 19:13646-51. [DOI: 10.1002/chem.201302812] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Indexed: 11/10/2022]
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Dietrich PJ, Wu T, Sumer A, Dumesic JA, Jellinek J, Delgass WN, Ribeiro FH, Miller JT. Aqueous Phase Glycerol Reforming with Pt and PtMo Bimetallic Nanoparticle Catalysts: The Role of the Mo Promoter. Top Catal 2013. [DOI: 10.1007/s11244-013-0115-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Affiliation(s)
| | - Xim Bokhimi
- Instituto de Fı́sica, UNAM, A.P. 20-364, México D.F
| | | | - Julius Jellinek
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439,
United States
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Kwon SG, Krylova G, Sumer A, Schwartz MM, Bunel EE, Marshall CL, Chattopadhyay S, Lee B, Jellinek J, Shevchenko EV. Capping ligands as selectivity switchers in hydrogenation reactions. Nano Lett 2012; 12:5382-8. [PMID: 22988832 DOI: 10.1021/nl3027636] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We systematically investigated the role of surface modification of nanoparticles catalyst in alkyne hydrogenation reactions and proposed the general explanation of effect of surface ligands on the selectivity and activity of Pt and Co/Pt nanoparticles (NPs) using experimental and computational approaches. We show that the proper balance between adsorption energetics of alkenes at the surface of NPs as compared to that of capping ligands defines the selectivity of the nanocatalyst for alkene in alkyne hydrogenation reaction. We report that addition of primary alkylamines to Pt and CoPt(3) NPs can drastically increase selectivity for alkene from 0 to more than 90% with ~99.9% conversion. Increasing the primary alkylamine coverage on the NP surface leads to the decrease in the binding energy of octenes and eventual competition between octene and primary alkylamines for adsorption sites. At sufficiently high coverage of catalysts with primary alkylamine, the alkylamines win, which prevents further hydrogenation of alkenes into alkanes. Primary amines with different lengths of carbon chains have similar adsorption energies at the surface of catalysts and, consequently, the same effect on selectivity. When the adsorption energy of capping ligands at the catalytic surface is lower than adsorption energy of alkenes, the ligands do not affect the selectivity of hydrogenation of alkyne to alkene. On the other hand, capping ligands with adsorption energies at the catalytic surface higher than that of alkyne reduce its activity resulting in low conversion of alkynes.
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Affiliation(s)
- Soon Gu Kwon
- Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Paz SA, Leiva EPM, Jellinek J, Mariscal MM. Properties of rotating nanoalloys formed by cluster collision: A computer simulation study. J Chem Phys 2011; 134:094701. [DOI: 10.1063/1.3556530] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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22
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Yang M, Yang F, Jackson KA, Jellinek J. Probing the structural evolution of CuN−, N=9–20, through a comparison of computed electron removal energies and experimental photoelectron spectra. J Chem Phys 2010; 132:064306. [DOI: 10.1063/1.3300128] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Abstract
A brief sketch of the history of metals and alloys is followed by examples illustrating the current status of the field of nanoalloys and a discussion of our results on the characterization of structural and dynamical (thermal) properties of Ni-Al bimetallic clusters.
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Affiliation(s)
- Julius Jellinek
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
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24
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Green JR, Jellinek J, Berry RS. Space-time properties of Gram-Schmidt vectors in classical Hamiltonian evolution. Phys Rev E Stat Nonlin Soft Matter Phys 2009; 80:066205. [PMID: 20365252 DOI: 10.1103/physreve.80.066205] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2009] [Indexed: 05/29/2023]
Abstract
Not all tangent space directions play equivalent roles in the local chaotic motions of classical Hamiltonian many-body systems. These directions are numerically represented by basis sets of mutually orthogonal Gram-Schmidt vectors, whose statistical properties may depend on the chosen phase space-time domain of a trajectory. We examine the degree of stability and localization of Gram-Schmidt vector sets simulated with trajectories of a model three-atom Lennard-Jones cluster. Distributions of finite-time Lyapunov exponent and inverse participation ratio spectra formed from short-time histories reveal that ergodicity begins to emerge on different time scales for trajectories spanning different phase-space regions, in a narrow range of total energy and history length. Over a range of history lengths, the most localized directions were typically the most unstable and corresponded to atomic configurations near potential landscape saddles.
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Affiliation(s)
- Jason R Green
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, United Kingdom.
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Affiliation(s)
- Riccardo Ferrando
- Dipartimento di Fisica, Universita di Genova, INFM and IMEM/CNR, Via Dodecaneso 33, Genova, I16146, Italy, Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439, and School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Julius Jellinek
- Dipartimento di Fisica, Universita di Genova, INFM and IMEM/CNR, Via Dodecaneso 33, Genova, I16146, Italy, Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439, and School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Roy L. Johnston
- Dipartimento di Fisica, Universita di Genova, INFM and IMEM/CNR, Via Dodecaneso 33, Genova, I16146, Italy, Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439, and School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
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Bai J, Cui LF, Wang J, Yoo S, Li X, Jellinek J, Koehler C, Frauenheim T, Wang LS, Zeng XC. Structural evolution of anionic silicon clusters SiN (20 <or= N <or= 45). J Phys Chem A 2007; 110:908-12. [PMID: 16419988 DOI: 10.1021/jp055874s] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Results of a combined photoelectron spectroscopy and first-principles density-functional study of SiN- clusters in the size range 20 <or= N <or= 45 are reported and discussed. Evidence for a prolate-to-near-spherical shape transition at N = 27 is presented. It is shown that the tricapped-trigonal-prism (TTP) structural motif Si9 found in most low-lying clusters SiN-, 9 <or= N <or= 19, is replaced or augmented by a series of structural motifs consisting of a bulklike "adamantane" fragment plus a magic-number cluster (Si6, Si7, Si10) or TTP Si9 in low-lying prolate clusters SiN-, N >or= 20. For 28 <or= N <or= 45, almost all low-lying near-spherical clusters SiN- adopt "stuffed-cage"-like structures where the cages are homologous to carbon fullerenes in the sense that they are composed of only five- and six-membered rings. However the arrangement of the "stuffing" atoms is not yet diamondlike.
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Affiliation(s)
- Jaeil Bai
- Department of Chemistry and Center for Materials Research & Analysis, University of Nebraska, Lincoln, Nebraska 68588, USA
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Affiliation(s)
- Jinlan Wang
- Department of Physics, Southeast University, Nanjing, 210096, P. R. China
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Yang M, Jackson KA, Jellinek J. First-principles study of intermediate size silver clusters: Shape evolution and its impact on cluster properties. J Chem Phys 2006; 125:144308. [PMID: 17042591 DOI: 10.1063/1.2351818] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Low-energy isomers of Ag(N) clusters are studied within gradient-corrected density functional theory over the size range of N = 9-20. The candidate conformations are drawn from an extensive structural database created in a recent exploration of Cu(N) clusters [M. Yang et al., J. Chem. Phys. 124, 24308 (2006)]. Layered configurations dominate the list of the lowest-energy isomers of Ag(N) for N < 16. The most stable structures for N > 16 are compact with quasispherical shapes. The size-driven shape evolution is similar to that found earlier for Na(N) and Cu(N). The shape change has a pronounced effect on the cluster cohesive energies, ionization potentials, and polarizabilities. The properties computed for the most stable isomers of Ag(N) are in good agreement with the available experimental data.
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Affiliation(s)
- M Yang
- Physics Department, Central Michigan University, Mt. Pleasant, Michigan 48859, USA
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32
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Abstract
Using extensive, unbiased searches based on density-functional theory, we explore the structural evolution of Cu(n) clusters over the size range n=8-20. For n=8-16, the optimal structures are plateletlike, consisting of two layers, with the atoms in each layer forming a trigonal bonding network similar to that found in smaller, planar clusters (n<or=6). For n=17 and beyond, there is a transition to compact structures containing an icosahedral 13-atom core. The calculated ground-state structures are significantly different from those predicted earlier in studies based on empirical and semiempirical potentials. The evolution of the structure and shape of the preferred configuration of Cu(n), n<or=20, is shown to be nearly identical to that found for Na clusters, indicating a shell-model-type behavior in this size range.
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Affiliation(s)
- Mingli Yang
- Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA
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Abstract
Results of density functional theory computations of infrared (IR) spectra of linear sandwich V(n)Bz(n+1), n = 1-6, complexes are presented. It is shown that the systematic changes in the spectra as a function of the complex size can be categorized and understood in terms of responses of the "parent" modes of the Bz molecule and the VBz complex. The analysis presented should be applicable to a broad class of linear sandwich systems.
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Wang J, Jellinek J, Zhao J, Chen Z, King RB, Schleyer PVR. Hollow Cages versus Space-Filling Structures for Medium-Sized Gold Clusters: The Spherical Aromaticity of the Au50 Cage. J Phys Chem A 2005; 109:9265-9. [PMID: 16833267 DOI: 10.1021/jp052414q] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Candidates for the lowest energy structures of medium-sized Au(n), n = 32, 38, 44, 50, and 56, clusters were evaluated using gradient-corrected DFT computations. Both hollow cage and space-filling conformations were considered. The cages were constructed using fullerene-based templates. The space-filling structures were generated by employing a genetic algorithm. We have found that the space-filling isomers were lower in energy except for two notable cases. Like Au(32) [Johansson, M. P.; Sundholm, D.; Vaara, J. Angew. Chem. Int. Ed. 2004, 43, 2678], a hollow cage configuration of Au(50) is more stable than its alternative space-filling isomeric forms. The unusual stabilities of the cage Au(32) and Au(50) can be attributed to spherical aromaticity; both exhibit large negative nucleus-independent chemical shifts and exceptionally large HOMO-LUMO gaps.
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Affiliation(s)
- Jinlan Wang
- Chemistry Division, Argonne National Laboratory, Argonne, IL 60439, USA
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35
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Di Paola C, Gianturco FA, López-Durán D, de Lara-Castells MP, Delgado-Barrio G, Villarreal P, Jellinek J. Br2(X) Microsolvation in Helium Clusters: Effect of the Interaction on the Quantum Solvent Density Distribution. Chemphyschem 2005; 6:1348-56. [PMID: 15968696 DOI: 10.1002/cphc.200400530] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The Born-Oppenheimer potential energy surface for the Br2(X) molecule interacting with a varying number of 4He bosons is constructed following two different schemes which employ either a full ab initio evaluation of the Br2-He interaction forces or an estimate of the latter through an empirical model. Both descriptions are employed by carrying out diffusion Monte Carlo (DMC) calculations of the ground-state energies and quantum wavefunctions for Br2-(He)n clusters with n up to 24. The results clearly indicate, for both interactions, the occurrence of the full solvation of the molecular dopant within the quantum bosonic "solvent" but also show differences between the two models in terms of the expected density distributions of the surrounding particles within the shorter-range region that makes up the clusters with smaller n values. Our calculations also show that such differences become insignificant for the larger 4He clusters surrounding the Br2 molecule, where density profiles and bulk behaviour are chiefly driven by the solvent structure, once n values reach the region of 15-20 adatoms.
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Affiliation(s)
- Cono Di Paola
- Department of Chemistry and INFM, University of Rome, La Sapienza, Piazzale A. Moro 5, 00185 Rome, Italy
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Abstract
Results on structural, energetic, electronic, and magnetic properties of linear sandwich VnBzn+1 clusters obtained using high-accuracy density functional computations are presented and analyzed. Energetically close-lying configurations and states of different spin-multiplicities are identified. The computed characteristics are in good agreement with the available experimental data. The computations predict that the most stable forms of the clusters in the size range n >/= 4 are chiral. This feature, combined with the magnetism of these systems, makes them of potential importance as building blocks of nanosystems with coupled optical and magnetic functionalities.
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Affiliation(s)
- Jinlan Wang
- Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
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Abstract
Geometric structures and electronic properties of small beryllium clusters (Be(n), 2< or = n< or =9) are investigated within the gradient-corrected density functional theory. The computations are performed with the Becke exchange and Perdew-Wang correlation functionals. Both low and high multiplicity states are considered. A predominance of higher multiplicity states among the low-energy isomers of the larger clusters is found. An analysis of the variations in the structural and electronic properties with cluster size is presented, and the results are compared with those of earlier studies.
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Affiliation(s)
- Sudha Srinivas
- Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, USA
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López-Durán D, de Lara-Castells MP, Delgado-Barrio G, Villarreal P, Di Paola C, Gianturco FA, Jellinek J. Raman spectra of (He)N-Br2(X) clusters: The role of boson/fermion statistics in a quantum solvent. J Chem Phys 2004; 121:2975-84. [PMID: 15291607 DOI: 10.1063/1.1769369] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The aim of this paper is to elucidate the role played by the bosonic/fermionic character of N He atoms solvating a Br2(X) molecule. To this end, an adiabatic model in the molecular stretching coordinate is assumed and the ground energy levels of the complexes are searched by means of Hartree (or Hartree-Fock) Quantum Chemistry calculations for 4He (or 3He) solvent atoms. Simulations of vib-rotational Raman spectra point at the spin multiplicity as the main feature responsible for the drastic difference in the rotational structures of molecules embedded in boson or fermion helium drops as already observed by the experiments of Grebenev et al. [S. Grebenev, J. P. Toennies, and A. F. Vilesov, Science 279 (1998) 2083].
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Affiliation(s)
- D López-Durán
- Instituto de Matematicas y Fisica Fundamental (CSIC), Serrano 123, E-28006-Madrid, Spain
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López-Durán D, de Lara-Castells MP, Delgado-Barrio G, Villarreal P, Di Paola C, Gianturco FA, Jellinek J. Role of boson-fermion statistics on the Raman spectra of Br2(X) in helium clusters. Phys Rev Lett 2004; 93:053401. [PMID: 15323693 DOI: 10.1103/physrevlett.93.053401] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2004] [Indexed: 05/24/2023]
Abstract
The role played by the bosonic or fermionic character of He atoms surrounding a Br2(X) molecule is analyzed through vibrotational Raman spectra simulations. Quantum chemistry-type calculations reveal the spin multiplicity to be chiefly responsible for the drastic difference observed by Grebenev et al. [Science 279, 2083 (1998)]] in the rotational structure of molecules embedded in helium droplets.
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Affiliation(s)
- D López-Durán
- Instituto de Matemáticas y Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 123, 28006 Madrid, Spain
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Jellinek J, Acioli PH. Magnesium Clusters: Structural and Electronic Properties and the Size-Induced Nonmetal-to-Metal Transition. J Phys Chem A 2003. [DOI: 10.1021/jp0301655] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Acioli PH, Jellinek J. Electron binding energies of anionic magnesium clusters and the nonmetal-to-metal transition. Phys Rev Lett 2002; 89:213402. [PMID: 12443408 DOI: 10.1103/physrevlett.89.213402] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2002] [Indexed: 05/24/2023]
Abstract
The binding energies of the two most external electrons in Mg- n, n=2-22, clusters are computed using the gradient-corrected density functional theory and a new scheme for converting the Kohn-Sham eigenenergies into electron removal energies. The computations are performed for the anionic clusters considered in the most stable configurations of both Mg- n and Mg n. The results are compared with photoelectron spectroscopy data [O. C. Thomas, following Letter, Phys. Rev. Lett. 89, 213403 (2002)]], and their implications for the finite-size analog of the nonmetal-to-metal transition are analyzed.
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Affiliation(s)
- Paulo H Acioli
- Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
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Affiliation(s)
- Julius Jellinek
- Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
| | - Paulo H. Acioli
- Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
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Rexer EF, Jellinek J, Krissinel EB, Parks EK, Riley SJ. Theoretical and experimental studies of the structures of 12-, 13-, and 14-atom bimetallic nickel/aluminum clusters. J Chem Phys 2002. [DOI: 10.1063/1.1481386] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Jellinek J, Baer M, Kouri DJ. Reactive infinite order sudden rate constants for atomic fluorine + molecular hydrogen(v = 0, j = 0) .fwdarw. atomic hydrogen + hydrogen fluoride(v'). ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100241a004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jellinek J, Goldberg A. On the temperature, equipartition, degrees of freedom, and finite size effects: Application to aluminum clusters. J Chem Phys 2000. [DOI: 10.1063/1.1305821] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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48
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López MJ, Jellinek J. On the problem of fitting many-body potentials. I. The minimal maximum error scheme and the paradigm of metal systems. J Chem Phys 1999. [DOI: 10.1063/1.478809] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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50
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