In this study, we reported the development of a new quantum mechanics/molecular mechanics (QM/MM)-type framework to describe chemical processes in solution by combining standard molecular-orbital calculations with a three-dimensional formalism of integral equation theory for molecular liquids (multi-center molecular Ornstein–Zernike (MC-MOZ) method). The theoretical procedure is very similar to the 3D-reference interaction site model self-consistent field (RISM-SCF) approach. Since the MC-MOZ method is highly parallelized for computation, the present approach has the potential to be one of the most efficient procedures to treat chemical processes in solution. Benchmark tests to check the validity of this approach were performed for two solute (solute water and formaldehyde) systems and a simple SN2 reaction (Cl− + CH3Cl → ClCH3 + Cl−) in aqueous solution. The results for solute molecular properties and solvation structures obtained by the present approach were in reasonable agreement with those obtained by other hybrid frameworks and experiments. In particular, the results of the proposed approach are in excellent agreements with those of 3D-RISM-SCF.
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7 July 2015
Research Article|
July 01 2015
A hybrid framework of first principles molecular orbital calculations and a three-dimensional integral equation theory for molecular liquids: Multi-center molecular Ornstein–Zernike self-consistent field approach
Kentaro Kido
;
Kentaro Kido
a)
1Nuclear Safety Research Center,
Japan Atomic Energy Agency
, 2-4 Shirane, Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
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Kento Kasahara;
Kento Kasahara
2Department of Molecular Engineering, Graduate School of Engineering,
Kyoto University
, Nishikyo-ku, Kyoto 615-8510, Japan
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Daisuke Yokogawa;
Daisuke Yokogawa
3Department of Chemistry, Graduate School of Science,
Nagoya University
, Chikusa, Nagoya 464-8602, Japan
4Institute of Transformative Bio-Molecules (WPI-ITbM),
Nagoya University
, Chikusa, Nagoya 464-8062, Japan
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Hirofumi Sato
Hirofumi Sato
2Department of Molecular Engineering, Graduate School of Engineering,
Kyoto University
, Nishikyo-ku, Kyoto 615-8510, Japan
5Elements Strategy Institute for Catalysts and Batteries (ESICB),
Kyoto University
, Katsura, Kyoto 615-8520, Japan
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a)
Electronic mail: kido.kentaro@jaea.go.jp
J. Chem. Phys. 143, 014103 (2015)
Article history
Received:
April 24 2015
Accepted:
June 12 2015
Citation
Kentaro Kido, Kento Kasahara, Daisuke Yokogawa, Hirofumi Sato; A hybrid framework of first principles molecular orbital calculations and a three-dimensional integral equation theory for molecular liquids: Multi-center molecular Ornstein–Zernike self-consistent field approach. J. Chem. Phys. 7 July 2015; 143 (1): 014103. https://doi.org/10.1063/1.4923007
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