Journal of Computational Chemistry

Cover image for Vol. 37 Issue 1

Edited By: Charles L. Brooks III, Masahiro Ehara, Gernot Frenking, and Peter R. Schreiner

Impact Factor: 3.589

ISI Journal Citation Reports © Ranking: 2014: 36/157 (Chemistry Multidisciplinary)

Online ISSN: 1096-987X

Associated Title(s): International Journal of Quantum Chemistry, Wiley Interdisciplinary Reviews: Computational Molecular Science

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Recently Published Articles

  1. UV-photoexcitation and ultrafast dynamics of HCFC-132b (CF2ClCH2Cl)

    Gessenildo Pereira Rodrigues, Elizete Ventura, Silmar Andrade do Monte and Mario Barbatti

    Article first published online: 26 NOV 2015 | DOI: 10.1002/jcc.24260

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    HCFC-132b is an important industrial compound, with a strong impact on health and environment. Upon UV irradiation, it decomposes into dozens of different photoproducts. In this article, nonadiabatic dynamics simulation is used to explain how photo-decomposition takes place through the competition between diverse reaction pathways in the subpicosecond time scale.

  2. The barrier to the methyl rotation in Cis-2-butene and its isomerization energy to Trans-2-butene, revisited (pages 143–154)

    Chérif F. Matta, Seyed Abdolreza Sadjadi, Dale A. Braden and Gernot Frenking

    Article first published online: 18 NOV 2015 | DOI: 10.1002/jcc.24223

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    Atomic origin of the locally stabilizing H⋯H contact in cis-2-butene from virial QTAIM atomic energies along the potential energy surface of methyl rotation, i.e., in terms of atomic sub-potential energy surfaces.

  3. A highly efficient hybrid method for calculating the hydration free energy of a protein

    Hiraku Oshima and Masahiro Kinoshita

    Article first published online: 17 NOV 2015 | DOI: 10.1002/jcc.24253

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    Although the hydration free energy (HFE) is one of the most important factors in studies on the structural stability of a protein, its calculation is significantly difficult in computational cost and accuracy. We develop a new method for calculating the HFE by combining the generalized Born model and the morphometric approach. Our method gives almost the same result as that from the three-dimensional reference interaction site model (3D-RISM) theory with drastic reduction of computational cost.

  4. Shift-and-invert parallel spectral transformation eigensolver: Massively parallel performance for density-functional based tight-binding

    Murat Keçeli, Hong Zhang, Peter Zapol, David A. Dixon and Albert F. Wagner

    Article first published online: 17 NOV 2015 | DOI: 10.1002/jcc.24254

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    Massively parallel supercomputers can extend the size of systems that we can study with quantum chemistry methods. However, the eigenvalue problem remains the bottleneck of scalability for density-functional based tight-binding (DFTB) or semi-empirical molecular orbital methods. We present a sparse eigensolver that enables DFTB calculations for systems with more than 100,000 atoms utilizing more than 200,000 CPU cores.

  5. Revisiting the concept of the (a)synchronicity of diels-alder reactions based on the dynamics of quasiclassical trajectories

    Miguel A. F. de Souza, Elizete Ventura, Silmar A. do Monte, José M. Riveros and Ricardo L. Longo

    Article first published online: 17 NOV 2015 | DOI: 10.1002/jcc.24245

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    Model Diels-Alder cycloaddition reactions were studied by static and dynamics approaches to establish the (a)synchronous character of the concerted mechanism. The use of static criteria, such as the asymmetry of the TS geometry, for classifying and quantifying the (a)synchronicity of the concerted reaction mechanism provides contradictory results and conclusions when compared to the dynamics approach.