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New perspective of chemical bond by the spin-symmetrized Hartree-Fock method

Research Project

Project/Area Number 19K05371
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 32010:Fundamental physical chemistry-related
Research InstitutionKanazawa University

Principal Investigator

IDA tomonori  金沢大学, 物質化学系, 准教授 (30345607)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords化学結合 / 電子基底状態 / Coulson-Fischer波動関数 / 水素分子 / CF波動関数 / 機械学習 / 原子価結合法 / 化学反応 / 電子相関 / プロトン伝導 / ギ酸分解 / Hartree-Fock / スピン対称化
Outline of Research at the Start

以前、考案されたスピン対称化Hartree-Fock方程式を用いて水素分子の解離過程ついて計算を行ったところ、解離過程が補正されるだけでなく、驚くことに平衡核間距離においてFull-CIに近いエネルギーを示された。計算結果の解析から、平衡核間距離におけるエネルギー安定性は、反平行なスピン分極構造が寄与していることが分かった。つまり化学結合には電子と核の静電項と量子効果の交換項、加えて反平行スピン分極項が重要だという従来の概念の刷新が示された。この計算手法を一般の分子へも適用可能な新規電子状態計算手法を開発する。

Outline of Final Research Achievements

In 1985, Luzanov proposed a theoretical development called the spin-symmetrized Hartree-Fock equation, which has not progressed well. We examined this equation closely and found that it is identical to the wavefunction proposed by Coulson and Fischer in 1949, which has the characteristics of both the VB and MO methods. The Coulson-Fischer wavefunction had been developed by Wilson as the modern VB method, but the originality of the calculation method was too strong that other researchers could not easily use it. Therefore, we investigated the theory from the viewpoint of the MO method and established a formulation that can be calculated with existing MO software. Furthermore we demonstrated a high-precision calculation for the electronic ground state of a hydrogen molecule by using the formulation.

Academic Significance and Societal Importance of the Research Achievements

これまで水素分子の電子基底状態は様々な理論によって表現されてきたが、申請者の提案する計算手法は、既に多くの研究者によって考察されたVB法とMO法の両方の特徴を併せ持ち、かつ誰でもその波動関数を利用可能とするために改良を施した。得られる波動関数には化学結合に関する新しい見方も含まれており、波動関数の研究としても興味深い。またこの波動関数は様々な計算手法(密度汎関数法など)へ応用が可能であり、加えて高次電子相関計算の基底状態としても利用できる。この様に考案された計算手法は多岐の分野への応用が期待される。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (18 results)

All 2023 2022 2021 2020 2019

All Journal Article (11 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 11 results,  Open Access: 1 results) Presentation (7 results)

  • [Journal Article] Predicting and analyzing organic reaction pathways by combining machine learning and reaction network approaches2023

    • Author(s)
      Ida Tomonori、Kojima Honoka、Hori Yuta
    • Journal Title

      Chemical Communications

      Volume: 59 Issue: 83 Pages: 12439-12442

    • DOI

      10.1039/d3cc03890d

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Coulson?Fischer Wave Function on Self-consistent Field and Perturbation Correction2023

    • Author(s)
      Mogi Masato、Ida Tomonori
    • Journal Title

      Chemistry Letters

      Volume: 52 Issue: 2 Pages: 59-62

    • DOI

      10.1246/cl.220474

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Molecular Motions of Imidazole in Poly(vinylphosphonic acid)-Imidazole Composites Investigated by Molecular Dynamics Simulations2021

    • Author(s)
      Hori Yuta、Suetake Toshiya、Shigeta Yasuteru、Ida Tomonori、Mizuno Motohiro
    • Journal Title

      Chemistry Letters

      Volume: 50 Issue: 1 Pages: 17-20

    • DOI

      10.1246/cl.200635

    • NAID

      130007965988

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Route to phonon-mediated high-temperature unconventional superconductivity2021

    • Author(s)
      Lim Fang Han、Ida Tomonori、Berciu Mona
    • Journal Title

      Physical Review B

      Volume: 103 Issue: 6 Pages: 064507-064507

    • DOI

      10.1103/physrevb.103.064507

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Proton Conduction Mechanism for Anhydrous Imidazolium Hydrogen Succinate Based on Local Structures and Molecular Dynamics2021

    • Author(s)
      Hori Yuta、Dekura Shun、Sunairi Yoshiya、Ida Tomonori、Mizuno Motohiro、Mori Hatsumi、Shigeta Yasuteru
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 12 Issue: 22 Pages: 5390-5394

    • DOI

      10.1021/acs.jpclett.1c01280

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Luminescence spectral analysis for Eu(III), and the dinuclear (Zn(II), Cu(II)) complexes with organic ligands by quantum chemical methods2020

    • Author(s)
      Endo Kazunaka、Ida Tomonori、Yamazaki Atsuo、Akitsu Takashiro、Hasegawa Yuko
    • Journal Title

      Chemical Physics

      Volume: 529 Pages: 110552-110552

    • DOI

      10.1016/j.chemphys.2019.110552

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Local Structures and Dynamics of Imidazole Molecules in Poly(vinylphosphonic acid)?Imidazole Composite Investigated by Molecular Dynamics2020

    • Author(s)
      Hori Yuta、Suetake Toshiya、Shiota Yoshihito、Yoshizawa Kazunari、Shigeta Yasuteru、Ida Tomonori、Mizuno Motohiro
    • Journal Title

      ACS Applied Polymer Materials

      Volume: 2 Issue: 4 Pages: 1561-1568

    • DOI

      10.1021/acsapm.9b01222

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Gaussian process model of 51-dimensional potential energy surface for protonated imidazole dimer2020

    • Author(s)
      Sugisawa Hiroki、Ida Tomonori、Krems R. V.
    • Journal Title

      The Journal of Chemical Physics

      Volume: 153 Issue: 11 Pages: 114101-114101

    • DOI

      10.1063/5.0023492

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Revisiting Formic Acid Decomposition by a Graph-Theoretical Approach2019

    • Author(s)
      Ida Tomonori、Nishida Manami、Hori Yuta
    • Journal Title

      The Journal of Physical Chemistry A

      Volume: 123 Issue: 44 Pages: 9579-9586

    • DOI

      10.1021/acs.jpca.9b05994

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quantum structural fluctuations of protonated water clusters (H2O)nH+ (n=1-4) studied by variational molecular dynamics method2019

    • Author(s)
      Sugisawa Hiroki、Ida Tomonori、Miura Shinichi
    • Journal Title

      Journal of Molecular Liquids

      Volume: 284 Pages: 157-162

    • DOI

      10.1016/j.molliq.2019.03.170

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Local structures and electronic properties of In atoms in In-doped ZnO2019

    • Author(s)
      Hori Yuta、Shiota Yoshihito、Ida Tomonori、Yoshizawa Kazunari、Mizuno Motohiro
    • Journal Title

      Thin Solid Films

      Volume: 685 Pages: 428-433

    • DOI

      10.1016/j.tsf.2019.05.047

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] マルチタスク学習による分子物性予測と解析2023

    • Author(s)
      藁谷 広夢,杉澤 宏樹,井田 朋智,水野 元博
    • Organizer
      第17回分子科学討論会2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] 機械学習から提案される有機化学反応のルール2022

    • Author(s)
      小島 穂夏, 井田 朋智, 水野 元博
    • Organizer
      第16回分子科学討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] 化学反応ネットワークと機械学習による生成物および反応経路予測の可能性2022

    • Author(s)
      井田朋智, 小島穂夏, 堀優太
    • Organizer
      第45回ケモインフォマティクス討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] 化学反応ネットワークと機械学習を用いた反応経路解析2022

    • Author(s)
      小島 穂夏,井田 朋智,水野 元博
    • Organizer
      日本化学会第102春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 化学反応ネットワークと機械学習を用いた反応経路予測2021

    • Author(s)
      小島 穂夏,井田 朋智,水野 元博
    • Organizer
      第15回分子科学討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] ギ酸分解の化学反応ネットワーク2019

    • Author(s)
      井田 朋智, 西田 愛美, 堀 優太
    • Organizer
      第22回理論化学討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] 分子動力学法を用いた有機酸複合体中イミダゾールの分子運動解析2019

    • Author(s)
      末武 鋭也, 杉澤 宏樹, 堀 優太, 井田 朋智, 水野 元博
    • Organizer
      第22回理論化学討論会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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