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2018 Fiscal Year Annual Research Report

Qquantum transition state and quantum reaction path, and these application to chemical reactions

Research Project

Project/Area Number 15KT0067
Research InstitutionYokohama City University

Principal Investigator

立川 仁典  横浜市立大学, 生命ナノシステム科学研究科(八景キャンパス), 教授 (00267410)

Co-Investigator(Kenkyū-buntansha) 石元 孝佳  横浜市立大学, 国際総合科学部(八景キャンパス), 准教授 (50543435)
宇田川 太郎  岐阜大学, 工学部, 助教 (70509356)
Project Period (FY) 2015-07-10 – 2019-03-31
Keywords量子論的遷移状態 / 量子論的反応経路 / 量子シミュレーション / 量子多成分系分子理論 / 経路積分
Outline of Annual Research Achievements

本研究課題では、網羅的にIRCや遷移状態を求めるのではなく、核の量子揺らぎも含めた有効自由エネルギー超曲面における1.量子論的遷移状態および量子論的反応経路を新たに構築・提唱した。特に初期経路依存が小さい探索手法としてストリング法、さらにはそれを発展させた手法を開発し、効率的なシステム実装も行った。本手法により、様々な反応系における2.量子論的遷移状態の探索および遷移状態制御による設計指針を与え、実験グループにフィードバックした。特に本年度は今までの三年間のまとめとして、以下の項目を実施した。
1.量子論的遷移状態および量子論的反応経路の確立: 本年度は、平面波局在混合基底系ONIOM計算手法のプログラム実装、整備、および高度化を行った。ストリング法と多成分系分子軌道法・多成分系密度汎関数法との組み合わせたプログラム整備および高度化を行った。
2.量子論的遷移状態の探索および遷移状態制御による設計指針: 1.で開発した手法・プログラムを用いて、分子内水素転移反応や水素引き抜き反応に対する量子論的遷移状態を探索することに成功した。具体的には、様々な有機分子とHTO分子におけるHT交換反応に関する高精度計算を実施し、本研究成果をBCSJ誌に報告した。またHOSO + NO2反応における水分子の役割を量子論的に解明し、その研究成果をIJQC誌に報告した。金属表面における水素吸着機構に関するH/D同位体効果に関する計算も実施した。

  • Research Products

    (21 results)

All 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (14 results) (of which Peer Reviewed: 14 results) Presentation (5 results) (of which Int'l Joint Research: 5 results,  Invited: 3 results) Remarks (1 results)

  • [Int'l Joint Research] チェンマイ大学(タイ)

    • Country Name
      THAILAND
    • Counterpart Institution
      チェンマイ大学
  • [Journal Article] Theoretical Study on Hydrogen-Tritium Exchange Reactions between Several Organic and HTO Molecules: A Multicomponent QM Study2019

    • Author(s)
      Ishibashi Rina、Tachikawa Masanori、Udagawa Taro
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 92 Pages: 592~599

    • DOI

      10.1246/bcsj.20180308

    • Peer Reviewed
  • [Journal Article] A path integral molecular dynamics study on intermolecular hydrogen bond of acetic acid-arsenic acid anion and acetic acid-phosphoric acid anion clusters2018

    • Author(s)
      Kawashima Yukio、Sawada Keisuke、Nakajima Takahito、Tachikawa Masanori
    • Journal Title

      Journal of Computational Chemistry

      Volume: 40 Pages: 172~180

    • DOI

      10.1002/jcc.25562

    • Peer Reviewed
  • [Journal Article] Multicomponent QM study on the reaction of HOSO?+?NO 2 with H 2 O: Nuclear quantum effect on structure and reaction energy profile2018

    • Author(s)
      Sugimoto Hideya、Tachikawa Masanori、Udagawa Taro
    • Journal Title

      International Journal of Quantum Chemistry

      Volume: 119 Pages: e25895~e25895

    • DOI

      10.1002/qua.25895

    • Peer Reviewed
  • [Journal Article] Reduction of OH vibrational frequencies in amino acids by positron attachment2018

    • Author(s)
      Sugiura Yutaro、Suzuki Kento、Takayanagi Toshiyuki、Kita Yukiumi、Tachikawa Masanori
    • Journal Title

      Journal of Computational Chemistry

      Volume: 39 Pages: 2060~2066

    • DOI

      10.1002/jcc.25387

    • Peer Reviewed
  • [Journal Article] A Balance between van der Waals and Cation-π Interactions Stabilizes Hydrophobic Assemblies2018

    • Author(s)
      Zhan Yi-Yang、Kojima Tatsuo、Koide Takuya、Tachikawa Masanori、Hiraoka Shuichi
    • Journal Title

      Chemistry - A European Journal

      Volume: 24 Pages: 9130~9135

    • DOI

      10.1002/chem.201801376

    • Peer Reviewed
  • [Journal Article] Importance of Molecular Meshing for the Stabilization of Solvophobic Assemblies2018

    • Author(s)
      Zhan Yi-Yang、Tanaka Naru、Ozawa Yuka、Kojima Tatsuo、Mashiko Takako、Nagashima Umpei、Tachikawa Masanori、Hiraoka Shuichi
    • Journal Title

      The Journal of Organic Chemistry

      Volume: 83 Pages: 5132~5137

    • DOI

      10.1021/acs.joc.8b00495

    • Peer Reviewed
  • [Journal Article] Nuclear quantum effect and H/D isotope effect on Cl・ + (H2O)n → HCl + OH・(H2O)n?1 (n = 1?3) reactions2018

    • Author(s)
      Sugiura Keita、Tachikawa Masanori、Udagawa Taro
    • Journal Title

      RSC Advances

      Volume: 8 Pages: 17191~17201

    • DOI

      10.1039/C8RA02679C

    • Peer Reviewed
  • [Journal Article] Programed dynamical ordering in self-organization processes of a nanocube: a molecular dynamics study2018

    • Author(s)
      Harada Ryuhei、Mashiko Takako、Tachikawa Masanori、Hiraoka Shuichi、Shigeta Yasuteru
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 20 Pages: 9115~9122

    • DOI

      10.1039/C8CP00284C

    • Peer Reviewed
  • [Journal Article] Semi-quantitative evaluation of molecular meshing via surface analysis with varying probe radii2018

    • Author(s)
      Tanaka Naru、Zhan Yi-Yang、Ozawa Yuka、Kojima Tatsuo、Koide Takuya、Mashiko Takako、Nagashima Umpei、Tachikawa Masanori、Hiraoka Shuichi
    • Journal Title

      Chemical Communications

      Volume: 54 Pages: 3335~3338

    • DOI

      10.1039/c8cc00695d

    • Peer Reviewed
  • [Journal Article] Hyperthermostable cube-shaped assembly in water2018

    • Author(s)
      Zhan Yi-Yang、Ogata Kazuho、Kojima Tatsuo、Koide Takuya、Ishii Kentaro、Mashiko Takako、Tachikawa Masanori、Uchiyama Susumu、Hiraoka Shuichi
    • Journal Title

      Communications Chemistry

      Volume: 1 Pages: 14-14

    • DOI

      10.1038/s42004-018-0014-2

    • Peer Reviewed
  • [Journal Article] Strong Hydrogen Bonds at the Interface between Proton-Donating and -Accepting Self-Assembled Monolayers on Au(111)2018

    • Author(s)
      Kato Hiroyuki S.、Yoshimoto Shinya、Ueda Akira、Yamamoto Susumu、Kanematsu Yusuke、Tachikawa Masanori、Mori Hatsumi、Yoshinobu Jun、Matsuda Iwao
    • Journal Title

      Langmuir

      Volume: 34 Pages: 2189~2197

    • DOI

      10.1021/acs.langmuir.7b03451

    • Peer Reviewed
  • [Journal Article] Reaction mechanism of hydrogen-tritium exchange reactions between several organic and HTO molecules: a role of the second HTO2018

    • Author(s)
      Udagawa Taro、Tachikawa Masanori
    • Journal Title

      RSC Advances

      Volume: 8 Pages: 3878~3888

    • DOI

      10.1039/C7RA13110K

    • Peer Reviewed
  • [Journal Article] Quantum fluctuations of a fullerene cage modulate its internal magnetic environment2018

    • Author(s)
      Kawatsu Tsutomu、Tachikawa Masanori
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 20 Pages: 1673~1684

    • DOI

      10.1039/C7CP06401B

    • Peer Reviewed
  • [Journal Article] Quantum dynamics calculations for e+?+?LiH?→?Li+?+?[H?;?e+] dissociative positron attachment using a pseudopotential model2018

    • Author(s)
      Suzuki Kento、Takayanagi Toshiyuki、Kita Yukiumi、Tachikawa Masanori、Oyamada Takayuki
    • Journal Title

      Computational and Theoretical Chemistry

      Volume: 1123 Pages: 135~141

    • DOI

      10.1016/j.comptc.2017.11.023

    • Peer Reviewed
  • [Presentation] Molecular dyamics study on substituent and solvent effects for nanocube formed with gear-shaped amphiphile molecules2018

    • Author(s)
      Masanori Tachikawa
    • Organizer
      NanoBio&Med2018
    • Int'l Joint Research
  • [Presentation] "Path integral simulation for accurate HFCC values on muoniated acetone radical",2018

    • Author(s)
      Masanori Tachikawa
    • Organizer
      7th French-Japanese Workshop on Computational Methods in Chemistry
    • Int'l Joint Research / Invited
  • [Presentation] "Path Integral Simulation for Hydrogen bonded systems: Protonic quantum nature and its isotope effect"2018

    • Author(s)
      Masanori Tachikawa
    • Organizer
      Asian Workshop of Experiment and Theory in Quantum Beam Molecular Sciences
    • Int'l Joint Research / Invited
  • [Presentation] "Path integral simulation on muoniated acetone radical"2018

    • Author(s)
      Masanori Tachikawa
    • Organizer
      3rd International Symposium of Quantum Beam Science
    • Int'l Joint Research / Invited
  • [Presentation] "Path integral simulation on muoniated acetone radical"2018

    • Author(s)
      Masanori Tachikawa
    • Organizer
      7th JCS symposium
    • Int'l Joint Research
  • [Remarks] 横浜市立大学量子物理化学研究室

    • URL

      http://www-user.yokohama-cu.ac.jp/~tachi/

URL: 

Published: 2019-12-27  

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