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Theoretical study for the observation of transition state of chemical reaction

Research Project

Project/Area Number 17KT0093
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section特設分野
Research Field Transition State Control
Research InstitutionSaitama University

Principal Investigator

TAKAYANAGI Toshiyuki  埼玉大学, 理工学研究科, 教授 (90354894)

Project Period (FY) 2017-07-18 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords遷移状態 / 反応動力学 / 量子波束法 / 非断熱遷移 / ポテンシャルエネルギー曲面 / 量子化学 / 分子衝突 / 遷移状態分光 / 光電子分光 / 波束動力学 / スピン反転 / 光電子スペクトル / 化学物理 / 原子・分子物理
Outline of Final Research Achievements

The concept of “transition state” has been important to intuitively grasp the essence of the kinetics, mechanisms and dynamics of chemical reactions. It is generally difficult to directly observe the transition state due to its short lifetime. However, there have been a few experimental techniques that can obtain the information on the transition state region of the potential energy surface with spectroscopic methods. Such methods are called “transition state spectroscopy”and one of the successful methods is to employ a molecular anion. However, it is frequently difficult to interpret the measured spectrum only from the experimental information since the transition state structure is very different from that of the stable molecule and has a finite lifetime. In this project, we have been performing quantum wave packet dynamics calculations combined with ab initio electronic structure calculations to understand the measured transition state spectra at a quantitative level.

Academic Significance and Societal Importance of the Research Achievements

化学反応の本質は、瞬間的な分子結合の解離や生成である。化学反応がどのような分子構造を変化を経て進行しているかを理解することは重要である。本研究課題では、理論と実験の共同作業によって、化学反応の鍵である「遷移状態構造」の情報を直接得ることができることを示すことができた。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (24 results)

All 2020 2019 2018 2017

All Journal Article (19 results) (of which Peer Reviewed: 19 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 4 results,  Invited: 5 results)

  • [Journal Article] Reduced-dimensionality Quantum dynamics Study of the 3Fe(CO)4 + H2 -> 1FeH2(CO)4 spin-inversion reaction2020

    • Author(s)
      T. Takayanagi, Y. Watabe, T. Miyazaki
    • Journal Title

      Molecules

      Volume: 25 Issue: 4 Pages: 882-882

    • DOI

      10.3390/molecules25040882

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spin‐inversion mechanisms in O2 binding to a model heme complex revisited by density function theory calculations2020

    • Author(s)
      Saito Kohei、Watabe Yuya、Fujihara Takashi、Takayanagi Toshiyuki、Hasegawa Jun‐ya
    • Journal Title

      Journal of Computational Chemistry

      Volume: 41 Issue: 11 Pages: 1130-1138

    • DOI

      10.1002/jcc.26159

    • NAID

      120007034051

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 化学ダイナミクスにおける核量子効果:経路積分分子動力学法とリングポリマー分子動力学法の応用2020

    • Author(s)
      高柳敏幸, 宮崎貴暉
    • Journal Title

      アンサンブル(分子シミュレーション学会誌)

      Volume: 22 Pages: 8-13

    • NAID

      130007978496

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Computational analysis of two-state reactivity in beta-hydride elimination mechanisms of Fe(II) and Co(II)-alkyl complexes2019

    • Author(s)
      T. Takayanagi, K. Saito, H. Suzuki, Y. Watabe, T. Fujihara
    • Journal Title

      Organometallics

      Volume: 38 Issue: 19 Pages: 3582-3589

    • DOI

      10.1021/acs.organomet.9b00418

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theoretical study on the spectroscopic observation of intersystem crossing between 3B1 and 1A1 states of GeH2 using the GeH2- (2B1) anion,2019

    • Author(s)
      Y. Watabe, T. Miyazaki, *T. Takayanagi, Y. Suzuki
    • Journal Title

      J. Phys. Chem. A

      Volume: 123 Issue: 27 Pages: 5734-5740

    • DOI

      10.1021/acs.jpca.9b04548

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ionization dynamics of Ne-doped helium clusters at low temperature: Ring-polymer molecular dynamics simulations including electronically nonadiabatic transitions2019

    • Author(s)
      T. Miyazaki, T. Takayanagi
    • Journal Title

      Comp. Theo. Chem.

      Volume: 1163 Pages: 112537-112537

    • DOI

      10.1016/j.comptc.2019.112537

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantum dynamics calculation of the annihilation spectrum for positron-proline scattering2019

    • Author(s)
      Y. Sugiura, K. Suzuki, S. Koido, T. Takayanagi, Y. Kita, and M. Tachikawa
    • Journal Title

      Comp. Theo. Chem.

      Volume: 1147 Pages: 1-7

    • DOI

      10.1016/j.comptc.2018.11.013

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hydration effect on positron binding ability for proline: Positron attachment induces proton-transfer to form zwitterionic structure2019

    • Author(s)
      K. Suzuki, Y. Sugiura, T. Takayanagi, Y. Kita, and M. Tachikawa
    • Journal Title

      J. Phys. Chem. A

      Volume: 123 Issue: 6 Pages: 1217-1224

    • DOI

      10.1021/acs.jpca.8b11653

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Automated reaction path search calculations of spin-inversion mechanisms in the 6,4,2Nb + C2H4 reaction2019

    • Author(s)
      M. Kawano, S. Koido, T. Nakatomi, Y. Watabe, and T. Takayanagi
    • Journal Title

      Comp. Theo. Chem.

      Volume: 1115 Pages: 31-37

    • DOI

      10.1016/j.comptc.2019.03.021

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fundamental peak disappears upon binding of noble gas: a case of vibrational spectrum of PtCO in argon matrix2018

    • Author(s)
      Yuriko Ono, Kiyoshi Yagi, Toshiyuki Takayanagi, and Tetsuya Taketsugu
    • Journal Title

      Phys. Chem. Chem. Phys.

      Volume: 20 Issue: 5 Pages: 3296-3302

    • DOI

      10.1039/c7cp06713e

    • NAID

      120006552866

    • Related Report
      2018 Research-status Report
    • 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

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Automated reaction path searches for spin-forbidden reactions2018

    • Author(s)
      T. Takayanagi and T. Nakatomi
    • Journal Title

      J. Comp. Chem.

      Volume: 39 Issue: 19 Pages: 1319-1326

    • DOI

      10.1002/jcc.25202

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] On the ion-pair dissociation mechanisms in the small NaCl(H2O)6 cluster: a perspective from reaction path search calculations2018

    • Author(s)
      T. Takayanagi, T. Nakatomi, and Y. Yonetani
    • Journal Title

      J. Comp. Chem.

      Volume: 39 Issue: 23 Pages: 1835-1842

    • DOI

      10.1002/jcc.25227

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Reduction of OH vibrational frequencies in amino acids by positron attachment2018

    • Author(s)
      Y. Sugiura, K. Suzuki, T. Takayanagi, M. Tachikawa, and Y. Kita
    • Journal Title

      J. Comp. Chem.

      Volume: 39 Issue: 25 Pages: 2060-2066

    • DOI

      10.1002/jcc.25387

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quantum Simulation Verifies the Stability of an 18‐Coordinated Actinium–Helium Complex2018

    • Author(s)
      Eiki Ozama, Sadia Adachi, Toshiyuki Takayanagi, Motoyuki Shiga
    • Journal Title

      Chemistry: A European Journal

      Volume: 24 Issue: 48 Pages: 12716-12721

    • DOI

      10.1002/chem.201802554

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Theoretical calculations of photoelectron spectrum of (Au-CO2)- anion2018

    • Author(s)
      Y. Watabe, T. Miyazaki, E. Ozama, T. Takayanagi, and Y. Suzuki
    • Journal Title

      Comp. Theo. Chem.

      Volume: 1140 Pages: 56-62

    • DOI

      10.1016/j.comptc.2018.07.019

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nuclear quantum effects in direct ionization processes of pure helium clusters: path-integral and ring-polymer molecular dynamics simulations on the diatomics-in-molecule potential energy surfaces2018

    • Author(s)
      K. Suzuki, T. Miyazaki, T. Takayanagi, and M. Shiga
    • Journal Title

      Phys. Chem. Chem. Phys.

      Volume: 20 Issue: 41 Pages: 26489-26499

    • DOI

      10.1039/c8cp05389h

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] 原子・分子の陽電子束縛機構と対消滅機構解明のための高精度第一原理計算2018

    • Author(s)
      立川仁典,北幸海,小山田隆行,高柳敏幸
    • Journal Title

      しょうとつ(原子衝突学会)

      Volume: 15 Pages: 113-126

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nonadiabatic quantum dynamics calculations of transition state spectroscopy of I + HI and I + DI reactions: the existence of long life vibrational bonding resonances2017

    • Author(s)
      T. Takayanagi
    • Journal Title

      Phys. Chem. Chem. Phys.

      Volume: 19 Issue: 43 Pages: 29125-29133

    • DOI

      10.1039/c7cp05478e

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Nonadiabatic quantum dynamics study of transition-state spectroscopy2019

    • Author(s)
      T. Takayanagi
    • Organizer
      International Conference on Theoretical and High Performance Computational Chemistry 2019 (ICT-HPCC19)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Quantum simulations for real-time dynamics of pure and impurity-doped helium clusters at low temperature2019

    • Author(s)
      T. Takayanagi
    • Organizer
      102nd Canadian Chemistry Conference and Exhibition
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Transition State Spectroscopy: Theoretical Analyses2019

    • Author(s)
      T. Takayanagi
    • Organizer
      2019 International Symposium on Quantum Effects in Chemistry and Biology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] NaCl-(H2O)nクラスター中のイオン解離過程の反応座標:GRRM法の応用2018

    • Author(s)
      高柳敏幸
    • Organizer
      化学反応経路探索のニューフロンティア2018
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Quantum dynamics calculations of transition state spectra of gas-phase chemical reactions2018

    • Author(s)
      T. Takayanagi
    • Organizer
      nternational Conference on Computational Methods in Science and Engineering (ICCMSE) Thessaloniki (Greece)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2017-07-21   Modified: 2021-02-19  

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