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Theoretical study of transition metal complex in crystal: Improvement of QM/MM approach for molecular crystal

Research Project

Project/Area Number 17K14437
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Physical chemistry
Research InstitutionKyoto University

Principal Investigator

Aono Shinji  京都大学, 福井謙一記念研究センター, 特定研究員 (70750769)

Research Collaborator Sakaki Shigeyoshi  
Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
KeywordsQM/MM法 / 分子結晶 / 結晶効果 / 吸収・発光スペクトル / 異性化反応 / 混合原子価性 / 理論化学 / 遷移金属錯体 / QM/MM計算 / 吸収スペクトル / 発光スペクトル / 混合原子価 / 金属サレン錯体 / 溶媒効果 / QM/MM / 分子性固体 / 分子物性
Outline of Final Research Achievements

The theoretical study of luminescent spectra, chemical reactions, and mixed-valence characters in molecular crystals is a challenging research target. For such investigations, we have improved the crystal model and modified the quantum mechanics/molecular mechanics (QM/MM) method based on the periodic MM crystal model with the self-consistent point charges. In our method, QM molecule is embedded in infinitely periodic MM crystal, the point charges and geometries of which are determined as mirror image of the QM molecule in the self-consistent field manner by applying the translational and symmetrizing operations to the subunit of the minimum unit cell. We compared the molecular properties and reactions in crystal with those in gas phase and solution, discussed the characteristic differences, and successfully elucidated the reason why from the microscopic molecular viewpoints.

Academic Significance and Societal Importance of the Research Achievements

本研究は、これまで理論的研究がほとんど行われてこなかった分子性結晶内での遷移金属錯体の電子状態と構造、分子物性、反応性を明らかにした研究である。我々の行ったQM/MM法はQM分子-MM分子間相互作用の記述精度に問題が残るが、着目するQM分子をCCSD(T)法やCASPT2法などの高精度な電子状態計算で扱えるという点は、現在普及している平面波DFT法では扱えない学術的問題に対しても解答を与え得る。また本研究で行った遷移金属錯体から成る分子結晶は、機能材料への応用の面でも期待でき、その分子機能制御の足掛かりになる事は社会発展の上でも意義がある。

Report

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

    (10 results)

All 2019 2018 2017

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (7 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Dependence of Absorption and Emission Spectra on Polymorphs of Gold(I) Isocyanide Complexes: Theoretical Study with QM/MM Approach2019

    • Author(s)
      Aono Shinji、Seki Tomohiro、Ito Hajime、Sakaki Shigeyoshi
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 123 Issue: 8 Pages: 4773-4794

    • DOI

      10.1021/acs.jpcc.8b10602

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] QM/MM Approach to Isomerization of Ruthenium(II) Sulfur Dioxide Complex in Crystal; Comparison with Solution and Gas Phases2018

    • Author(s)
      Shinji Aono and Shigeyoshi Sakaki
    • Journal Title

      J. Phys. Chem. C

      Volume: 122 Issue: 36 Pages: 20701-20716

    • DOI

      10.1021/acs.jpcc.8b04774

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theoretical study of one-electron-oxidized salen complexes of group 7 (Mn(iii), Tc(iii), and Re(iii)) and group 10 metals (Ni(ii), Pd(ii), and Pt(ii)) with the 3D-RISM-GMC-QDPT method: localized vs. delocalized ground and excited states in solution2017

    • Author(s)
      Aono Shinji、Nakagaki Masayuki、Sakaki Shigeyoshi
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 19 Issue: 25 Pages: 16831-16849

    • DOI

      10.1039/c7cp02992f

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 自己無撞着点電荷QM/MM法に基づく分子結晶構造の最適化2019

    • Author(s)
      青野信治、榊茂好
    • Organizer
      第16回京都大学福井謙一記念研究センターシンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] Development of FMO-QM/MM method for molecular crystal considering self-consistent MM point charge representation2018

    • Author(s)
      Shinji Aono and Shigeyoshi Sakaki
    • Organizer
      FUKUI 2018 Satellite Symposium
    • Related Report
      2018 Annual Research Report
  • [Presentation] 自己無撞着点電荷QM/MM法による分子結晶の構造最適化2018

    • Author(s)
      青野信治、榊茂好
    • Organizer
      第12回分子科学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] QM/MM study of thermal isomerization of Ru(II) sulfur dioxide complex in crystal; comparison with gas and solution phases2018

    • Author(s)
      Shinji Aono and Shigeyoshi Sakaki
    • Organizer
      16th International Congress of Quantum Chemistry 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 結晶、溶媒中における五配位四角錐型コバルトサレン錯体の混合原子価電子状態と吸収スペクトル2018

    • Author(s)
      ○青野信治 中垣雅之 榊茂好
    • Organizer
      第15回京都大学福井謙一記念センターシンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] 7族、10族金属サレン錯体の一電子酸化体の局在/非局在性電子状態:吸収スペクトルと溶媒効果2017

    • Author(s)
      ○青野信治 中垣雅之 榊茂好
    • Organizer
      第20回理論化学討論会
    • Related Report
      2017 Research-status Report
  • [Presentation] 五配位四角錐型コバルトサレン錯体の局在・非局在性電子状態と吸収スペクトルにおける結晶・溶媒効果2017

    • Author(s)
      ○青野信治 中垣雅之 榊茂好
    • Organizer
      第11回分子科学討論会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2020-03-30  

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