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A theoretical study on La-activated bicyclo-oligomerization of acetylene to form naphthalene in gas phase using density functional theory (DFT). Struct Chem 2018. [DOI: 10.1007/s11224-017-1016-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Acetylene cyclotrimerization catalyzed by PdCl2 and CuCl2 in the gas phase: A theoretical study. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.01.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Liu S, Tan JM, Gulec A, Schweitzer NM, Delferro M, Marks LD, Stair PC, Marks TJ. Direct Synthesis of Low-Coordinate Pd Catalysts Supported on SiO2 via Surface Organometallic Chemistry. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02046] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shengsi Liu
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - J. Miles Tan
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Ahmet Gulec
- Department
of Materials Science and Engineering, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208-3113, United States
| | - Neil M. Schweitzer
- Department
of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois, 60208-3113, United States
| | - Massimiliano Delferro
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Laurence D. Marks
- Department
of Materials Science and Engineering, Northwestern University, 2145 Sheridan
Road, Evanston, Illinois 60208-3113, United States
| | - Peter C. Stair
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Tobin J. Marks
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
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Liu Z, Cheng R, He X, Liu B. Reactivity and Regioselectivity of Methylacetylene Cyclotrimerization over the Phillips Cr/Silica Catalyst: A DFT Study. ACS Catal 2013. [DOI: 10.1021/cs400129g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Zhen Liu
- State Key
Laboratory of Chemical Engineering, East China University of Science
and Technology, 130 Meilong Road, 200237, Shanghai, China
| | - Ruihua Cheng
- State Key
Laboratory of Chemical Engineering, East China University of Science
and Technology, 130 Meilong Road, 200237, Shanghai, China
| | - Xuelian He
- State Key
Laboratory of Chemical Engineering, East China University of Science
and Technology, 130 Meilong Road, 200237, Shanghai, China
| | - Boping Liu
- State Key
Laboratory of Chemical Engineering, East China University of Science
and Technology, 130 Meilong Road, 200237, Shanghai, China
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Ma YP, Xue W, Wang ZC, Ge MF, He SG. Acetylene Cyclotrimerization Catalyzed by TiO2 and VO2 in the Gas Phase: A DFT Study. J Phys Chem A 2008; 112:3731-41. [DOI: 10.1021/jp711027z] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan-Ping Ma
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
| | - Wei Xue
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
| | - Zhe-Chen Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
| | - Mao-Fa Ge
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
| | - Sheng-Gui He
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
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Canovese L, Visentin F, Santo C. The formation of a metallacycloheptadienyl intermediate in the reaction of palladacyclopentadienyl derivatives with tetracyanoethylene. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.06.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Murugan B, Ramaswamy AV. Defect-Site Promoted Surface Reorganization in Nanocrystalline Ceria for the Low-Temperature Activation of Ethylbenzene. J Am Chem Soc 2007; 129:3062-3. [PMID: 17315993 DOI: 10.1021/ja066834k] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- B Murugan
- Department of Chemistry, University of Pune, Pune 411007, India
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The role of quantum chemistry in the elucidation of the elementary mechanisms of catalytic processes: from atoms, to surfaces, to enzymes. Theor Chem Acc 2007. [DOI: 10.1007/s00214-006-0199-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Cinquini F, Valentin CD, Finazzi E, Giordano L, Pacchioni G. Theory of oxides surfaces, interfaces and supported nano-clusters. Theor Chem Acc 2006. [DOI: 10.1007/s00214-006-0204-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wang Y, Nguyen HN, Truong TN. Mechanisms of and Effect of Coadsorption on Water Dissociation on an Oxygen Vacancy of the MgO(100) Surface. Chemistry 2006; 12:5859-67. [PMID: 16729339 DOI: 10.1002/chem.200600027] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The dissociation mechanism of a water molecule at an oxygen vacancy on the MgO(100) surface was studied by using the embedded cluster method at the DFT/B3 LYP level, while the energetic information was refined by using the IMOMO method at the CCSD level. We found that a water molecule initially adsorbs on one of the magnesium ions surrounding the vacancy site with a binding energy of 15.98 kcal mol(-1). It then can dissociate on the MgO(100) surface along two possible dissociation pathways. One pathway produces a hydroxyl group bonded to the original magnesium with a proton filling the vacancy via a transition state with a barrier of 4.67 kcal mol(-1) relative to the adsorbed water configuration. The other pathway yields two hydroxy groups; the hydroxy group originally belonging to the water molecule fills the vacancy, while the hydrogen atom binds with the surface oxygen to form the other hydroxy group. Hydrogen atoms of these hydroxy groups can recombine to form a hydrogen molecule and the surface is healed. Although the barrier (14.09 kcal mol(-1)) of the rate-controlling step of the latter pathway is higher than that of the former one, the energies of all of its stationary points are lower than that of the separated reactants (H(2)O+cluster). The effects of water coadsorption are modeled by placing an additional water molecule near the active center, which suggests that the more coadsorbed water molecules further stabilize the hydroxy species and prevent the hydrogen molecule formation through the latter pathway. The results support the photoemission spectral evidence of water dissociation on the defective MgO(100) surface at low water coverage.
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Affiliation(s)
- Yan Wang
- Henry Eyring Center for Theoretical Chemistry, Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
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Martinez M, del Carmen Michelini M, Rivalta I, Russo N, Sicilia E. Acetylene Cyclotrimerization by Early Second-Row Transition Metals in the Gas Phase. A Theoretical Study. Inorg Chem 2005; 44:9807-16. [PMID: 16363850 DOI: 10.1021/ic051281k] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The acetylene cyclotrimerization reaction mediated by the left-hand-side bare transition metal atoms Y, Zr, Nb, and Mo has been studied theoretically, employing DFT in its B3LYP formulation. The complete reaction mechanism has been analyzed, identifying intermediates and transition states. Both the ground spin state and at least one low-lying excited state have been considered to establish whether possible spin crossings between surfaces of different multiplicity can occur. Our results show that the overall reaction is highly favorable from a thermodynamic point of view and ground state transition states lie always below the energy limit represented by ground state reactants. After the activation of two acetylene molecules and formation of a bis-ligated complex, the reaction proceeds to give a metallacycle intermediate, as the alternative formation of a cyclobutadiene complex is energetically disfavored. All the examined reaction paths involve formation of a metallacycloheptatriene intermediate that in turn generates a metal-benzene adduct from which finally benzene is released. Similarities and differences in the behaviors of the considered four metal atoms have been examined.
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Affiliation(s)
- Mayra Martinez
- Dipartimento di Chimica and Centro di Calcolo ad Alte Prestazioni per Elaborazioni Parallele e Distribuite-Centro d'Eccellenza MURST, Università della Calabria, I-87030 Arcavacata di Rende, Italy
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Neyman KM, Inntam C, Matveev AV, Nasluzov VA, Rösch N. Single d-Metal Atoms on Fs and Fs+ Defects of MgO(001): A Theoretical Study across the Periodic Table. J Am Chem Soc 2005; 127:11652-60. [PMID: 16104741 DOI: 10.1021/ja052437i] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Single d-metal atoms on oxygen defects F(s) and F(s+) of the MgO(001) surface were studied theoretically. We employed an accurate density functional method combined with cluster models, embedded in an elastic polarizable environment, and we applied two gradient-corrected exchange-correlation functionals. In this way, we quantified how 17 metal atoms from groups 6-11 of the periodic table (Cu, Ag, Au; Ni, Pd, Pt; Co, Rh, Ir; Fe, Ru, Os; Mn, Re; and Cr, Mo, W) interact with terrace sites of MgO. We found bonding with F(s) and F(s+) defects to be in general stronger than that with O2- sites, except for Mn-, Re-, and Fe/F(s) complexes. In M/F(s) systems, electron density is accumulated on the metal center in a notable fashion. The binding energy on both kinds of O defects increases from 3d- to 4d- to 5d-atoms of a given group, at variance with the binding energy trend established earlier for the M/O2- complexes, 4d < 3d < 5d. Regarding the evolution of the binding energy along a period, group 7 atoms are slightly destabilized compared to their group 6 congeners in both the F(s) and F(s+) complexes; for later transition elements, the binding energy increases gradually up to group 10 and finally decreases again in group 11, most strongly on the F(s) site. This trend is governed by the negative charge on the adsorbed atoms. We discuss implications for an experimental detection of metal atoms on oxide supports based on computed core-level energies.
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Wang Y, Truong TN. Theoretical Study of Adsorption of Water Dimer on the Perfect MgO(100) Surface: Molecular Adsorption versus Dissociative Chemisorption. J Phys Chem B 2004. [DOI: 10.1021/jp031195a] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yan Wang
- Henry Eyring Center for Theoretical Chemistry, Department of Chemistry, University of Utah, 315 S 1400 E, Room Dock, Salt Lake City, Utah 84112
| | - Thanh N. Truong
- Henry Eyring Center for Theoretical Chemistry, Department of Chemistry, University of Utah, 315 S 1400 E, Room Dock, Salt Lake City, Utah 84112
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Supported metal species and adsorption complexes on metal oxides and in zeolites: Density functional cluster model studies. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/s1380-7323(04)80025-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Judai K, Abbet S, Wörz AS, Heiz U, Giordano L, Pacchioni G. Interaction of Ag, Rh, and Pd Atoms with MgO Thin Films Studied by the CO Probe Molecule. J Phys Chem B 2003. [DOI: 10.1021/jp034324w] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kolmakov A, Goodman DW. In situ scanning tunneling microscopy of oxide-supported metal clusters: nucleation, growth, and thermal evolution of individual particles. CHEM REC 2002; 2:446-57. [PMID: 12469355 DOI: 10.1002/tcr.10045] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
An experimental approach was developed for imaging the nucleation and growth of individual oxide-supported nanoparticles and their subsequent in situ chemical and thermal treatments by scanning tunneling microscopy (STM). The potential of the method is demonstrated for Au nanoparticles supported on a reduced TiO(2) substrate where a cluster-by-cluster comparison is made of the morphological evolution and stability of nanoparticles during their nucleation and thermal annealing. Using this methodology the details of the nucleation and growth kinetics can be directly observed.
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Affiliation(s)
- Andrei Kolmakov
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, USA
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Lopez N, Paniagua JC, Illas F. Controlling the spin of metal atoms adsorbed on oxide surfaces: Ni on regular and defective sites of the MgO(001) surface. J Chem Phys 2002. [DOI: 10.1063/1.1515733] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ferrari AM, Giordano L, Pacchioni G, Abbet S, Heiz U. Selectivity of Surface Defects for the Activation of Supported Metal Atoms: Acetylene Cyclotrimerization on Pd1/MgO. J Phys Chem B 2002. [DOI: 10.1021/jp013766+] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chiesa M, Paganini MC, Giamello E, Murphy DM. Partial Ionization of Cesium Atoms at Point Defects over Polycrystalline Magnesium Oxide. J Phys Chem B 2001. [DOI: 10.1021/jp0118470] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mario Chiesa
- National ENDOR Centre, Department of Chemistry, Cardiff University, P.O. Box 912, Cardiff CF10 3TB, and Dipartimento di Chimica IFM, Università di Torino e Unità INFM di Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Maria Cristina Paganini
- National ENDOR Centre, Department of Chemistry, Cardiff University, P.O. Box 912, Cardiff CF10 3TB, and Dipartimento di Chimica IFM, Università di Torino e Unità INFM di Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Elio Giamello
- National ENDOR Centre, Department of Chemistry, Cardiff University, P.O. Box 912, Cardiff CF10 3TB, and Dipartimento di Chimica IFM, Università di Torino e Unità INFM di Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - Damien M. Murphy
- National ENDOR Centre, Department of Chemistry, Cardiff University, P.O. Box 912, Cardiff CF10 3TB, and Dipartimento di Chimica IFM, Università di Torino e Unità INFM di Torino, Via P. Giuria 7, 10125 Torino, Italy
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Abbet S, Riedo E, Brune H, Heiz U, Ferrari AM, Giordano L, Pacchioni G. Identification of defect sites on MgO(100) thin films by decoration with Pd atoms and studying CO adsorption properties. J Am Chem Soc 2001; 123:6172-8. [PMID: 11414852 DOI: 10.1021/ja0157651] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
CO adsorption on Pd atoms deposited on MgO(100) thin films has been studied by means of thermal desorption (TDS) and Fourier transform infrared (FTIR) spectroscopies. CO desorbs from the adsorbed Pd atoms at a temperature of about 250 K, which corresponds to a binding energy, E(b), of about 0.7 +/- 0.1 eV. FTIR spectra suggest that at saturation two different sites for CO adsorption exist on a single Pd atom. The vibrational frequency of the most stable, singly adsorbed CO molecule is 2055 cm(-)(1). Density functional cluster model calculations have been used to model possible defect sites at the MgO surface where the Pd atoms are likely to be adsorbed. CO/Pd complexes located at regular or low-coordinated O anions of the surface exhibit considerably stronger binding energies, E(b) = 2-2.5 eV, and larger vibrational shifts than were observed in the experiment. CO/Pd complexes located at oxygen vacancies (F or F(+) centers) are characterized by much smaller binding energies, E(b) = 0.5 +/- 0.2 or 0.7 +/- 0.2 eV, which are in agreement with the experimental value. CO/Pd complexes located at the paramagnetic F(+) centers show vibrational frequencies in closest agreement with the experimental data. These comparisons therefore suggest that the Pd atoms are mainly adsorbed at oxygen vacancies.
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Affiliation(s)
- S Abbet
- Institut de Physique de la Matière Condensée, Université de Lausanne, CH-1015 Lausanne, Switzerland
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Abbet S, Sanchez A, Heiz U, Schneider WD. Tuning the Selectivity of Acetylene Polymerization Atom by Atom. J Catal 2001. [DOI: 10.1006/jcat.2000.3105] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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