101
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Liu J, Guo Z, Sun J, Liang W. Theoretical studies on electronic spectroscopy and dynamics with the real-time time-dependent density functional theory. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s11458-009-0205-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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102
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Wang B, Truhlar DG. Combined Quantum Mechanical and Molecular Mechanical Methods for Calculating Potential Energy Surfaces: Tuned and Balanced Redistributed-Charge Algorithm. J Chem Theory Comput 2010; 6:359-69. [DOI: 10.1021/ct900366m] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bo Wang
- Department of Chemistry and Supercomputing Institute, University of Minnesota, 207 Pleasant Street South East, Minneapolis, Minnesota 55455-0431
| | - Donald G. Truhlar
- Department of Chemistry and Supercomputing Institute, University of Minnesota, 207 Pleasant Street South East, Minneapolis, Minnesota 55455-0431
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103
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Haider S, Neidle S. Molecular modeling and simulation of G-quadruplexes and quadruplex-ligand complexes. Methods Mol Biol 2010; 608:17-37. [PMID: 20012413 DOI: 10.1007/978-1-59745-363-9_2] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Methods for the molecular modeling and simulation of G-quadruplex structures and their drug/ligand complexes are discussed, and a range of protocols is presented for undertaking a variety of tasks including model-building, ligand docking, dynamics simulation, continuum solvent modeling, energetic calculations, principal component analysis, and quantum chemical computations. The scope and limitations of these approaches are discussed.
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Affiliation(s)
- Shozeb Haider
- The Cancer Research UK Biomolecular Structure Group, The School of Pharmacy, University of London, London, UK
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104
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105
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Balasubramanian K, Cao Z. Spectroscopic Properties and Potential Energy Surfaces for Curium Hydrides: CmH 2, CmH 2+, CmH, and CmH +. J Phys Chem A 2009; 113:12512-24. [DOI: 10.1021/jp903795q] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K. Balasubramanian
- College of Science, California State University, East Bay, Hayward, California 94542, Chemistry and Material Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, and Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
| | - Zhiji Cao
- College of Science, California State University, East Bay, Hayward, California 94542, Chemistry and Material Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, and Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
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106
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Cao Z, Balasubramanian K. Theoretical studies of UO2(OH)(H2O)n+, UO2(OH)2(H2O)n, NpO2(OH)(H2O)n, and PuO2(OH)(H2O)n+ (n≤21) complexes in aqueous solution. J Chem Phys 2009; 131:164504. [DOI: 10.1063/1.3244041] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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107
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Chakrabarti S, Das KK. Theoretical studies of the low-lying states of GeSi+. J Phys Chem A 2009; 113:10089-95. [PMID: 19689101 DOI: 10.1021/jp904416w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Electronic structure and spectroscopic properties of the ground and low-lying excited states of GeSi+ have been studied by using multireference singles and doubles configuration interaction (MRDCI) method that includes relativistic effective core potentials of Ge and Si atoms. At least 17 Lambda-Sigma bound states of GeSi+ are reported within 5 eV. Potential energy curves of 24 Lambda-Sigma states which correlate with the lowest two dissociation limits, Ge+(2Pu)+Si(3Pg) and Ge(3Pg)+Si+ (2Pu) are constructed. The ground-state dissociation energy of GeSi+ is estimated to be 3.116 eV. The spin-orbit coupling among all states correlating the two dissociation limits is also included in the calculations. Spectroscopic constants of 27 Omega states of the ion are reported. Effects of the spin-orbit coupling on the spectroscopic properties are also studied. Potential energy curves of Omega states show several avoided crossings. Transition probabilities of many electric dipole allowed and spin-forbidden transitions are computed. Transitions such as 24Sigma(-)-X4Sigma- and 44Sigma(-)-X4Sigma- are found to be highly probable. Partial lifetimes for some weak spin-forbidden transitions to the ground-state components, X4Sigma(1/2)- and X4Sigma(3/2)- are also computed.
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Affiliation(s)
- Susmita Chakrabarti
- Department of Chemistry, Physical Chemistry Section, Jadavpur University, Kolkata 700 032, India
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108
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Cao Z, Balasubramanian K, Calvert MG, Nitsche H. Solvation Effects on Isomeric Preferences of Curium(III) Complexes with Multidentate phosphonopropionic Acid Ligands: CmH2PPA2+ and CmHPPA+ Complexes. Inorg Chem 2009; 48:9700-14. [DOI: 10.1021/ic901054h] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhiji Cao
- College of Science, California State University, East Bay, Hayward, California 94542
| | - K. Balasubramanian
- College of Science, California State University, East Bay, Hayward, California 94542
- Chemistry and Material Science Directorate Lawrence Livermore National Laboratory Livermore, California 94550
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Michael G. Calvert
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
- Department of Chemistry, University of California, Berkeley, California 94720
| | - Heino Nitsche
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
- Department of Chemistry, University of California, Berkeley, California 94720
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109
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Hatanaka M, Yabushita S. Theoretical Study on the f−f Transition Intensities of Lanthanide Trihalide Systems. J Phys Chem A 2009; 113:12615-25. [DOI: 10.1021/jp9049507] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Miho Hatanaka
- School of Fundamental Science and Technology, Graduate School of Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Satoshi Yabushita
- School of Fundamental Science and Technology, Graduate School of Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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110
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Benavides-Garcia MG, Balasubramanian K. Structural Insights into the Binding of Uranyl with Human Serum Protein Apotransferrin Structure and Spectra of Protein−Uranyl Interactions. Chem Res Toxicol 2009; 22:1613-21. [DOI: 10.1021/tx900184r] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Maria G. Benavides-Garcia
- Department of Natural Sciences, University of Houston—Downtown, Houston, Texas 77002, College of Science, California State University, East Bay, Hayward, California 94542, Chemistry and Material Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Krishnan Balasubramanian
- Department of Natural Sciences, University of Houston—Downtown, Houston, Texas 77002, College of Science, California State University, East Bay, Hayward, California 94542, Chemistry and Material Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, and Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
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111
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112
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Beck EV, Brozell SR, Blaudeau JP, Burggraf LW, Pitzer RM. Assessment of the Accuracy of Shape-Consistent Relativistic Effective Core Potentials Using Multireference Spin−Orbit Configuration Interaction Singles and Doubles Calculations of the Ground and Low-Lying Excited States of U4+ and U5+. J Phys Chem A 2009; 113:12626-31. [DOI: 10.1021/jp9049846] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eric V. Beck
- Lawrence Livermore National Laboratory, 7000 East Avenue, L-159, Livermore, California 94551, Ohio Supercomputer Center, 1224 Kinnear Road, Columbus, Ohio 43212, High Performance Technologies Incorporated, U.S. Army Research Laboratory, Building 394, Aberdeen Proving Ground, Maryland 21005, Department of Engineering Physics, Air Force Institute of Technology, AFIT/ENP, 2950 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433, and Department of Chemistry, The Ohio State University, 100 West 18th
| | - Scott R. Brozell
- Lawrence Livermore National Laboratory, 7000 East Avenue, L-159, Livermore, California 94551, Ohio Supercomputer Center, 1224 Kinnear Road, Columbus, Ohio 43212, High Performance Technologies Incorporated, U.S. Army Research Laboratory, Building 394, Aberdeen Proving Ground, Maryland 21005, Department of Engineering Physics, Air Force Institute of Technology, AFIT/ENP, 2950 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433, and Department of Chemistry, The Ohio State University, 100 West 18th
| | - Jean-Philippe Blaudeau
- Lawrence Livermore National Laboratory, 7000 East Avenue, L-159, Livermore, California 94551, Ohio Supercomputer Center, 1224 Kinnear Road, Columbus, Ohio 43212, High Performance Technologies Incorporated, U.S. Army Research Laboratory, Building 394, Aberdeen Proving Ground, Maryland 21005, Department of Engineering Physics, Air Force Institute of Technology, AFIT/ENP, 2950 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433, and Department of Chemistry, The Ohio State University, 100 West 18th
| | - Larry W. Burggraf
- Lawrence Livermore National Laboratory, 7000 East Avenue, L-159, Livermore, California 94551, Ohio Supercomputer Center, 1224 Kinnear Road, Columbus, Ohio 43212, High Performance Technologies Incorporated, U.S. Army Research Laboratory, Building 394, Aberdeen Proving Ground, Maryland 21005, Department of Engineering Physics, Air Force Institute of Technology, AFIT/ENP, 2950 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433, and Department of Chemistry, The Ohio State University, 100 West 18th
| | - Russell M. Pitzer
- Lawrence Livermore National Laboratory, 7000 East Avenue, L-159, Livermore, California 94551, Ohio Supercomputer Center, 1224 Kinnear Road, Columbus, Ohio 43212, High Performance Technologies Incorporated, U.S. Army Research Laboratory, Building 394, Aberdeen Proving Ground, Maryland 21005, Department of Engineering Physics, Air Force Institute of Technology, AFIT/ENP, 2950 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433, and Department of Chemistry, The Ohio State University, 100 West 18th
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113
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Tiana D, Francisco E, Blanco MA, Pendás AM. Using Pseudopotentials within the Interacting Quantum Atoms Approach. J Phys Chem A 2009; 113:7963-71. [DOI: 10.1021/jp901753p] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Davide Tiana
- Departamento de Química Física y Analítica. Facultad de Química, Universidad de Oviedo, 33006-Oviedo, Spain
| | - E. Francisco
- Departamento de Química Física y Analítica. Facultad de Química, Universidad de Oviedo, 33006-Oviedo, Spain
| | - M. A. Blanco
- Departamento de Química Física y Analítica. Facultad de Química, Universidad de Oviedo, 33006-Oviedo, Spain
| | - A. Martín Pendás
- Departamento de Química Física y Analítica. Facultad de Química, Universidad de Oviedo, 33006-Oviedo, Spain
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114
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Bernabé E, Méndez O, Colmenares F. Theoretical study on the oxidative addition of methyl fluoride to Ru+. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2009.05.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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115
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Cammarata A, Martorana A, Duca D. Cation Environment of BaCeO3-Based Protonic Conductors: A Computational Study. J Phys Chem A 2009; 113:6381-90. [DOI: 10.1021/jp901074p] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antonio Cammarata
- Dipartimento di Chimica Inorganica e Analitica “S. Cannizzaro” dell’Università di Palermo, Viale delle Scienze Ed. 17, I-90128 Palermo (Sicily), Italy
| | - Antonino Martorana
- Dipartimento di Chimica Inorganica e Analitica “S. Cannizzaro” dell’Università di Palermo, Viale delle Scienze Ed. 17, I-90128 Palermo (Sicily), Italy
| | - Dario Duca
- Dipartimento di Chimica Inorganica e Analitica “S. Cannizzaro” dell’Università di Palermo, Viale delle Scienze Ed. 17, I-90128 Palermo (Sicily), Italy
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116
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Zou W, Boggs JE. Theoretical study of the electronic states of CuCl2. J Chem Phys 2009; 130:154313. [DOI: 10.1063/1.3103252] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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117
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Lim LHV, Hofer TS, Pribil AB, Rode BM. The Hydration Structure of Sn(II): An ab initio Quantum Mechanical Charge Field Molecular Dynamics Study. J Phys Chem B 2009; 113:4372-8. [DOI: 10.1021/jp809937h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Len Herald V. Lim
- Theoretical Chemistry Division, Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria
| | - Thomas S. Hofer
- Theoretical Chemistry Division, Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria
| | - Andreas B. Pribil
- Theoretical Chemistry Division, Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria
| | - Bernd M. Rode
- Theoretical Chemistry Division, Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria
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118
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Zou W, Liu W. Comprehensiveab initiocalculation and simulation on the low-lying electronic states of TlX (X = F, Cl, Br, I, and At). J Comput Chem 2009; 30:524-39. [DOI: 10.1002/jcc.21080] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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119
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Varga V, Císařová I, Gyepes R, Horáček M, Kubišta J, Mach K. Evaluation of the Oxygen π-Donation in Permethyltitanocene Silanolates and Alcoholates. Organometallics 2009. [DOI: 10.1021/om801209f] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vojtech Varga
- Research Institute of Inorganic Chemistry, Revoluční 84, 400 01 Ústí nad Labem, Czech Republic, Department of Inorganic Chemistry, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic, and J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 182 23 Prague 8, Czech Republic
| | - Ivana Císařová
- Research Institute of Inorganic Chemistry, Revoluční 84, 400 01 Ústí nad Labem, Czech Republic, Department of Inorganic Chemistry, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic, and J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 182 23 Prague 8, Czech Republic
| | - Róbert Gyepes
- Research Institute of Inorganic Chemistry, Revoluční 84, 400 01 Ústí nad Labem, Czech Republic, Department of Inorganic Chemistry, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic, and J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 182 23 Prague 8, Czech Republic
| | - Michal Horáček
- Research Institute of Inorganic Chemistry, Revoluční 84, 400 01 Ústí nad Labem, Czech Republic, Department of Inorganic Chemistry, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic, and J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 182 23 Prague 8, Czech Republic
| | - Jiří Kubišta
- Research Institute of Inorganic Chemistry, Revoluční 84, 400 01 Ústí nad Labem, Czech Republic, Department of Inorganic Chemistry, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic, and J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 182 23 Prague 8, Czech Republic
| | - Karel Mach
- Research Institute of Inorganic Chemistry, Revoluční 84, 400 01 Ústí nad Labem, Czech Republic, Department of Inorganic Chemistry, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic, and J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 182 23 Prague 8, Czech Republic
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120
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Excited states of ReO4-: A comprehensive time-dependent relativistic density functional theory study. Chem Phys 2009. [DOI: 10.1016/j.chemphys.2008.10.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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121
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Nichols P, Govind N, Bylaska EJ, de Jong WA. Gaussian Basis Set and Planewave Relativistic Spin−Orbit Methods in NWChem. J Chem Theory Comput 2009; 5:491-9. [DOI: 10.1021/ct8002892] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Patrick Nichols
- William R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Mail Stop K8-91, Richland, Washington, 99352
| | - Niranjan Govind
- William R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Mail Stop K8-91, Richland, Washington, 99352
| | - Eric J. Bylaska
- William R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Mail Stop K8-91, Richland, Washington, 99352
| | - W. A. de Jong
- William R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Mail Stop K8-91, Richland, Washington, 99352
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122
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Zhang Y, Xu W, Sun Q, Zou W, Liu W. Excited states of OsO4: A comprehensive time-dependent relativistic density functional theory study. J Comput Chem 2009; 31:532-51. [DOI: 10.1002/jcc.21344] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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123
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Pramanik A, Banerjee A, Das KK. Electronic states of SiC−: A theoretical study. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2008.11.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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124
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Simeon T, Balasubramanian K, Leszczynski J. New Insights into the Chemical and Electronic Properties of C 69M [M = In −, Tl −, Sb +, Bi +] Species. J Phys Chem A 2008; 112:12179-86. [DOI: 10.1021/jp804718s] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomekia Simeon
- Computational Center for Molecular Structure and Interactions, Department of Chemistry, Jackson State University, 1400 JR Lynch Street, P.O. Box 17910, Jackson, MS 39217, Department of Mathematics and Computer Science, California State University, East Bay, Hayward, CA, University of California, Chemistry and Material Science Directorate, Lawrence Livermore National Laboratory, P.O. Box 808 L-268, Livermore, CA 94550, and Glenn T Seaborg Center, Lawrence Berkeley Laboratory, University of California,
| | - Krishnan Balasubramanian
- Computational Center for Molecular Structure and Interactions, Department of Chemistry, Jackson State University, 1400 JR Lynch Street, P.O. Box 17910, Jackson, MS 39217, Department of Mathematics and Computer Science, California State University, East Bay, Hayward, CA, University of California, Chemistry and Material Science Directorate, Lawrence Livermore National Laboratory, P.O. Box 808 L-268, Livermore, CA 94550, and Glenn T Seaborg Center, Lawrence Berkeley Laboratory, University of California,
| | - Jerzy Leszczynski
- Computational Center for Molecular Structure and Interactions, Department of Chemistry, Jackson State University, 1400 JR Lynch Street, P.O. Box 17910, Jackson, MS 39217, Department of Mathematics and Computer Science, California State University, East Bay, Hayward, CA, University of California, Chemistry and Material Science Directorate, Lawrence Livermore National Laboratory, P.O. Box 808 L-268, Livermore, CA 94550, and Glenn T Seaborg Center, Lawrence Berkeley Laboratory, University of California,
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125
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Valero R, Gomes JRB, Truhlar DG, Illas F. Good performance of the M06 family of hybrid meta generalized gradient approximation density functionals on a difficult case: CO adsorption on MgO(001). J Chem Phys 2008; 129:124710. [DOI: 10.1063/1.2982923] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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126
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Sun J, Liu J, Liang W, Zhao Y. Real-Time Propagation of the Reduced One-Electron Density Matrix in Atom-Centered Orbitals: Application to Multielectron Dynamics of Carbon Clusters Cn in the Strong Laser Pulses. J Phys Chem A 2008; 112:10442-7. [DOI: 10.1021/jp804408a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jin Sun
- Hefei National Laboratory for Physical Science at Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Jie Liu
- Hefei National Laboratory for Physical Science at Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P. R. China
| | - WanZhen Liang
- Hefei National Laboratory for Physical Science at Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yi Zhao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, Xiamen University, Xiamen, 361005, P. R. China
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127
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Zou W, Bersuker IB, Boggs JE. Do non-centro-symmetric linear X-Y-X molecules exist? The case for the (I)Π2u state of CuCl2. J Chem Phys 2008; 129:114107. [DOI: 10.1063/1.2977739] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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128
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Groenewold GS, Van Stipdonk MJ, de Jong WA, Oomens J, Gresham GL, McIlwain ME, Gao D, Siboulet B, Visscher L, Kullman M, Polfer N. Infrared Spectroscopy of Dioxouranium(V) Complexes with Solvent Molecules: Effect of Reduction. Chemphyschem 2008; 9:1278-85. [DOI: 10.1002/cphc.200800034] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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129
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Kenny JP, Janssen CL, Valeev EF, Windus TL. Components for integral evaluation in quantum chemistry. J Comput Chem 2008; 29:562-77. [PMID: 17721922 DOI: 10.1002/jcc.20815] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Sharing low-level functionality between software packages enables more rapid development of new capabilities and reduces the duplication of work among development groups. Using the component approach advocated by the Common Component Architecture Forum, we have designed a flexible interface for sharing integrals between quantum chemistry codes. Implementation of these interfaces has been undertaken within the Massively Parallel Quantum Chemistry package, exposing both the IntV3 and Cints/Libint integrals packages to component applications. Benchmark timings for Hartree-Fock calculations demonstrate that the overhead due to the added interface code varies significantly, from less than 1% for small molecules with large basis sets to nearly 10% for larger molecules with smaller basis sets. Correlated calculations and density functional approaches encounter less severe performance overheads of less than 5%. While these overheads are acceptable, additional performance losses occur when arbitrary implementation details, such as integral ordering within buffers, must be handled. Integral reordering is observed to add an additional overhead as large as 12%; hence, a common standard for such implementation details is desired for optimal performance.
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Affiliation(s)
- Joseph P Kenny
- Scalable Computing Research and Design, Sandia National Laboratories, MS 9158, P.O. Box 969, Livermore, California 94551-0969, USA.
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130
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Yanov I, Palacios JJ, Hill G. Simple STM tip functionalization for rapid DNA sequencing: an Ab initio Green's function study. J Phys Chem A 2008; 112:2069-73. [PMID: 18232675 DOI: 10.1021/jp710956s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An ab initio nonequilibrium Green's function study of the electron-transport properties of the adenine, thymine, cytosine, and guanine DNA bases located between gold electrodes has been performed. One-electron transmission spectra were calculated for both gold and sulfur-modified gold electrodes, which are model conditions of scanning tunneling microscopy (STM) experiments with the different tips. It is shown that the nature of chemical bonding between molecules and metal electrodes plays the most significant role in the overall conductance of the systems. The distance between electrodes and the size of molecules are less important, at least when both sides of the molecule form chemical contact with the electrodes. On the basis of the obtained results, a simple two-pass DNA sequencing scheme is suggested.
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Affiliation(s)
- Ilya Yanov
- Computational Center for Molecular Structure and Interactions (CCMSI), Department of Chemistry, Jackson State University, Jackson, Mississippi 39217, USA
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131
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132
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García F, Less RJ, Naseri V, McPartlin M, Rawson JM, Sancho Tomas M, Wright DS. Direct synthesis of the 1,2,3-[C6H4PPP]− anion, isoelectronic with the indenyl anion [C6H4CHCHCH]−. Chem Commun (Camb) 2008:859-61. [DOI: 10.1039/b718425e] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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133
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Yim WL, Klüner T. Atoms-in-molecules analysis for planewave DFT calculations—A numerical approach on a successively interpolated charge density grid. J Comput Chem 2008; 29:1306-15. [DOI: 10.1002/jcc.20889] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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134
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Nagy G, Lu P, Walker AV. An investigation of secondary ion yield enhancement using Bin2+ (n=1,3,5) primary ions. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2008; 19:33-45. [PMID: 18293484 DOI: 10.1016/j.jasms.2007.10.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We have investigated secondary ion yield enhancement using Bin2+ (n=1, 3, 5) primary ions impacting phenylalanine, 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC), 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine (DPPE), cholesterol, Irganox 1010, and polymer films adsorbed on silicon and aluminum. Secondary ion yields are increased using Bi2+and Bi3(2+) primary ions for the molecular layers and polymers that can undergo allyl cation rearrangements. For Irganox 1010, the deprotonated molecular ion yields (m/z 1175; [M-H]-) are one to two times larger for Bi2+ and Bi(3)2+ primary ions than for Bi+ and Bi3+ at the same primary ion velocities. In the positive ion mode, the largest fragment ion yield (m/z 899) is 1.5 times larger for Bi2+ ions than for Bi+. For Bi3(2+) the largest fragment ion yield is only 70% of the ion yield using Bi3+, but the secondary ion yields of the fragment ions at m/z 57 and 219 are enhanced. For polymers that can undergo allyl cation rearrangement reactions the secondary ion yield enhancements of the monomer ions range from 1.3 to 4.3. For Bi(5)2+ primary ions, secondary ion yields were the same or slightly larger than for Bi5+ in the negative ion mass spectra for Irganox 1010, but lower in the positive ion mode. No secondary ion yield enhancements were measured on polymer samples for Bi5(2+). For all polymer films studied, secondary ion intensities from the oligomer regions are substantially decreased using Bin2+ (n=1, 3, 5). We discuss differences in the ionization mechanisms for doubly and singly-charged Bi primary ion bombardment.
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Affiliation(s)
- Gabriella Nagy
- Department of Chemistry, Washington University in St. Louis, MO 63130, USA
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135
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Balasubramanian K, Cao Z. Theoretical Studies on Structures of Neptunyl Carbonates: NpO2(CO3)m(H2O)nq (m = 1−3, n = 0−3) in Aqueous Solution. Inorg Chem 2007; 46:10510-9. [DOI: 10.1021/ic700486u] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K. Balasubramanian
- Department of Mathematics and Computer Science, California State University, East Bay, Hayward, California 94542, University of California, Chemistry and Material Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, and Glenn T. Seaborg Center, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
| | - Zhiji Cao
- Department of Mathematics and Computer Science, California State University, East Bay, Hayward, California 94542, University of California, Chemistry and Material Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, and Glenn T. Seaborg Center, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
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136
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Lucena JR, Ventura E, do Monte SA, Araújo RCMU, Ramos MN, Fausto R. Dissociation of ground and nσ* states of CF3Cl using multireference configuration interaction with singles and doubles and with multireference average quadratic coupled cluster extensivity corrections. J Chem Phys 2007; 127:164320. [DOI: 10.1063/1.2800020] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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137
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Patkowski K, Szalewicz K. Frozen core and effective core potentials in symmetry-adapted perturbation theory. J Chem Phys 2007; 127:164103. [DOI: 10.1063/1.2784391] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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138
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Castillo S, Ramírez-Solís A, Díaz D, Poulain E, Novaro O. Theoretical study of the activation of methane by photoexcited zinc atoms. Mol Phys 2007. [DOI: 10.1080/00268979400100551] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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139
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Alekseyev AB, Liebermann HP, Buenker RJ. Theoretical study of the ArH+ photodissociation. Phys Chem Chem Phys 2007; 9:5088-95. [PMID: 17878984 DOI: 10.1039/b706670h] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The multireference Spin-Orbit (SO) Configuration Interaction (CI) method in its Lambda-S Contracted SO-CI (LSC-SO-CI) version is employed to calculate potential energy curves for the ground and low-lying excited states of the ArH(+) cation. For the first time, electric dipole moments are also computed in the approach, including SO coupling for transitions to the states responsible for the first absorption continuum (A-band) of ArH(+). On this basis, the partial and total absorption spectra in this energy range are obtained. It is shown that absorption in the A-band is dominated by the parallel A(1)Sigma(+)<--X(1)Sigma(+) transition. In the low-energy part of the band (<95 x 10(3) cm(-1)) the absorption is caused by the perpendicular B(1)Pi<--X(1)Sigma(+) excitation, but transitions to the b(3)Pi(0(+),1) states are also not negligible. The branching ratio Gamma for the final photodissociation products is calculated and it is shown to increase smoothly from 0 in the red tail of the band to 1 at E>or= 10(5) cm(-1). The latter value corresponds to the exclusive formation of the spin-excited Ar(+)((2)P(1/2)) ions, and thus leads to the inverse population of the Ar(+)((2)P(1/2)-(2)P(3/2)) ion states.
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Affiliation(s)
- Aleksey B Alekseyev
- Fachbereich C-Theoretische Chemie, Bergische Universität Wuppertal, Germany.
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140
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Improved theoretical calculations of InN in its X3Σ− ground state and in the first 3Π excited state. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.09.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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141
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Chiodo S, Russo N, Sicilia E. LANL2DZ basis sets recontracted in the framework of density functional theory. J Chem Phys 2007; 125:104107. [PMID: 16999515 DOI: 10.1063/1.2345197] [Citation(s) in RCA: 149] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this paper we report recontracted LANL2DZ basis sets for first-row transition metals. The valence-electron shell basis functions were recontracted using the PWP86 generalized gradient approximation functional and the hybrid B3LYP one. Starting from the original LANL2DZ basis sets a cyclic method was used in order to optimize variationally the contraction coefficients, while the contraction scheme was held fixed at the original one of the LANL2DZ basis functions. The performance of the recontracted basis sets was analyzed by direct comparison between calculated and experimental excitation and ionization energies. Results reported here compared with those obtained using the original basis sets show clearly an improvement in the reproduction of the corresponding experimental gaps.
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Affiliation(s)
- S Chiodo
- Dipartimento di Chimica, Università della Calabria, I-87030 Arcavacata di Rende (Cosenza), Italy
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142
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Yanov I, Kholod Y, Leszczynski J, Palacios JJ. Electron transport properties of the porphyrin molecule located between gold electrodes. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.07.084] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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143
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Theoretical Gas Phase Study of the Gauche and Trans Conformers of 1-Bromo-2-Iodoethane and Solvent Effects. J SOLUTION CHEM 2007. [DOI: 10.1007/s10953-007-9157-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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144
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Burkatzki M, Filippi C, Dolg M. Energy-consistent pseudopotentials for quantum Monte Carlo calculations. J Chem Phys 2007; 126:234105. [PMID: 17600402 DOI: 10.1063/1.2741534] [Citation(s) in RCA: 223] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The authors present scalar-relativistic energy-consistent Hartree-Fock pseudopotentials for the main-group elements. The pseudopotentials do not exhibit a singularity at the nucleus and are therefore suitable for quantum Monte Carlo (QMC) calculations. They demonstrate their transferability through extensive benchmark calculations of atomic excitation spectra as well as molecular properties. In particular, they compute the vibrational frequencies and binding energies of 26 first- and second-row diatomic molecules using post-Hartree-Fock methods, finding excellent agreement with the corresponding all-electron values. They also show their pseudopotentials give superior accuracy than other existing pseudopotentials constructed specifically for QMC. Finally, valence basis sets of different sizes (VnZ with n=D,T,Q,5 for first and second rows, and n=D,T for third to fifth rows) optimized for our pseudopotentials are also presented.
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Affiliation(s)
- M Burkatzki
- Institute for Theoretical Chemistry, University of Cologne, Greinstrasse 4, 50939 Cologne, Germany
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145
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Suo B, Balasubramanian K. Spectroscopic constants and potential energy curves of yttrium carbide (YC). J Chem Phys 2007; 126:224305. [PMID: 17581052 DOI: 10.1063/1.2743015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The potential energy curves of the low-lying electronic states of yttrium carbide (YC) and its cation are calculated at the complete active space self-consistent field and the multireference single and double excitation configuration interaction (MRSDCI) levels of theory. Fifteen low-lying electronic states of YC with different spin and spatial symmetries were identified. The X (4)Sigma- state prevails as the ground state of YC, and a low-lying excited A (4)Pi state is found to be 1661 cm(-1) higher at the MRSDCI level. The computations of the authors support the assignment of the observed spectra to a B (4)Delta(Omega=72)<--A (4)Pi(Omega=52) transition with a reinterpretation that the A (4)Pi state is appreciably populated under the experimental conditions as it is less than 2000 cm(-1) of the X (4)Sigma- ground state, and the previously suggested (4)Pi ground state is reassigned to the first low-lying excited state of YC. The potential energy curves of YC+ confirm a previous prediction by Seivers et al. [J. Chem. Phys. 105, 6322 (1996)] that the ground state of YC+ is formed through a second pathway at higher energies. The calculated ionization energy of YC is 6.00 eV, while the adiabatic electron affinity is 0.95 eV at the MRSDCI level. The computed ionization energy of YC and dissociation energy of YC+ confirm the revised experimental estimates provided by Seivers et al. although direct experimental measurements yielded results with greater errors due to uncertainty in collisional cross sections for YC+ formation.
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Affiliation(s)
- Bingbing Suo
- Department of Mathematics and Computer Science, California State University, East Bay, Hayward, California 94542-3092, USA
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146
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Lyon JT, Andrews L, Malmqvist PA, Roos BO, Yang T, Bursten BE. Infrared Spectrum and Bonding in Uranium Methylidene Dihydride, CH2UH2. Inorg Chem 2007; 46:4917-25. [PMID: 17487964 DOI: 10.1021/ic062407w] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Uranium atoms activate methane upon ultraviolet excitation to form the methyl uranium hydride CH3-UH, which undergoes alpha-H transfer to produce uranium methylidene dihydride, CH2=UH2. This rearrangement most likely occurs on an excited-quintet potential-energy surface and is followed by relaxation in the argon matrix. These simple U+CH4 reaction products are identified through isotopic substitution (13CH4, CD4, CH2D2) and density functional theory frequency and structure calculations for the strong U-H stretching modes. Relativistic multiconfiguration (CASSCF/CASPT2) calculations substantiate the agostic distorted C1 ground-state structure for the triplet CH2=UH2 molecule. We find that uranium atoms are less reactive in methane activation than thorium atoms. Our calculations show that the CH2=UH2 complex is distorted more than CH2=ThH2. A favorable interaction between the low energy open-shell U(5f) sigma orbital and the agostic hydrogen contributes to the distortion in the uranium methylidene complexes.
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Affiliation(s)
- Jonathan T Lyon
- Department of Chemistry, P.O. Box 400319, Charlottesville, Virginia 22904-4319, USA
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147
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Cao Z, Balasubramanian K. Unusual geometries and spectroscopic properties of electronic states of In2N2. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.03.108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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148
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149
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Buenker RJ, Liebermann HP, Devdariani AZ. Ab Initio Spin−Orbit Configuration Interaction Calculations for High-Lying States of the HeNe Quasimolecule. J Phys Chem A 2007; 111:1307-18. [PMID: 17266285 DOI: 10.1021/jp064987o] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Multireference configuration interaction (MRD-CI) calculations are reported for a large series of electronic states of the HeNe quasimolecule up to 170000 cm(-1) excitation energy, including those that dissociate to the 3S1 and 2 1S0 excited states of the He atom. Spin-orbit coupling is included through the use of relativistic effective core potentials (RECPs). Good agreement is obtained with experimental spectroscopic data for the respective atomic levels, although there is a tendency to systematically underestimate the energies of the Ne atom by 1000-1500 cm(-1) because of differences in the correlation effects associated with its ground and Rydberg excited states. Potential curves are calculated for each of these states, and a number of relatively deep minima are found. The CI Omega-state wave functions are sufficiently diabatic until r = 4-5 a0 to allow for a clear identification of the He 1s-2s excited states. Electric dipole transition moments are computed between these states and the HeNe X 0+ ground state up to r = 4.0 a0, and it is found that the 2 (1)S0 - X maximum value is over an order of magnitude larger than that for the corresponding (3)S1 - X excitation process.
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Affiliation(s)
- Robert J Buenker
- Fachbereich C-Mathematik und Naturwissenschaften, Bergische Universitaet Wuppertal, Gaussstrasse 20, D-42119 Wuppertal, Germany.
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150
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Banerjee A, Pramanik A, Das KK. B2Σ+–X2Σ+ and C2Π–X2Σ+ transitions in InF+: A configuration interaction study. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2006.12.081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2022]
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