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2008 Fiscal Year Annual Research Report

精密な相対論的電子状態理論の開発 : 分子物性と励起状態への展開

Research Project

Project/Area Number 20038040
Research InstitutionTokyo Metropolitan University

Principal Investigator

波田 雅彦  Tokyo Metropolitan University, 理工学研究科, 教授 (20228480)

Keywords相対論的量子化学 / 無限次Douglas-Kroll変換 / 2電子項 / スピン-軌道相互作用 / Dirac-Fock-Coulomb / エネルギー勾配法 / 2成分ハミルトニアン / 分子物性
Research Abstract

以下の項目について研究を進めた。
(1)無限次DKH(IODKH)法による相対論的電子状態理論の開発 : 我々はこれまで4成分Dirac法とほぼ等価な2成分相対論法の開発を行ってきた。本年度は2電子項への拡張を試み、我々の方法がDirac-Fock法と殆ど等価であることを示した。更に、この高精度計算をより広範囲の分子系へと応用できるよう、計算精度を保ったまま計算コストを削減する手法の開発を行った。この結果、IODKH法は重原子においてDirac-Fock-Coulomb法との誤差を0.01hartree許すならば数十倍の高速化が可能となった。
(2)SAC/SAC-CI法による磁気円二色性計算プログラムの開発 : 今年度は、基底/励起状態を高精度で計算できるSAC/SAC-CI法を用いて磁気円二色性スペクトルのFaraday B項を解析的に求めるプログラムを作成し、エチレンなどの簡単な分子への応用を行った。磁気円二色性スペクトルの形状に電子相関の効果が顕著に反映することがわかった。
(3)鉄ポルフィリン系の電子状態・常磁性シフトの解析 : 本年度は、シアニド-イミダゾール鉄ポルフィリン分子の脱プロトン化による電子状態の変化とC-13常磁性シフトを差電子密度を用いて解析した。更に、種々のヘム鉄に配位するCNアニオンのC-13常磁性シフトについても研究を進めた。

  • Research Products

    (21 results)

All 2009 2008 Other

All Journal Article (11 results) (of which Peer Reviewed: 9 results) Presentation (10 results)

  • [Journal Article] Evaluation of Electron Population Term for <rse^<-3>>4p, <rrs^<-3>>3p, and <ro^<-3>>2p How do HOMO and LUMO Shrink or Spread Depending on Nuclear Charges?2008

    • Author(s)
      W. Nakanishi et.al.
    • Journal Title

      Chemistry A European J 14

      Pages: 7278-7284

    • Peer Reviewed
  • [Journal Article] Contributions from atomic p(Se), d(Se), and f(Se)Orbitals to Absolute Paramagnetic Shielding Tensors in Neutral and Charged SeHn and Some Oxides, together with the Effect of Methyl and Halogen Substitutions on σ^P (Se)2008

    • Author(s)
      W. Nakanishi et.al.
    • Journal Title

      Chemistry A European J. 14

      Pages: 9467-9655

    • Peer Reviewed
  • [Journal Article] An ab initio study based on a finite nucleus model for isotope fractionation in the U(III)-U(TV) exchange reaction system2008

    • Author(s)
      M. Abe et.al.
    • Journal Title

      J. Chem. Phys. 128

      Pages: 1443091-1443096

    • Peer Reviewed
  • [Journal Article] An ab initio molecular orbital study of the nuclear volume effects in uranium isotope fractionations2008

    • Author(s)
      M. Abe et.al.
    • Journal Title

      J. Chem. Phys 129

      Pages: 1643091-1643097

    • Peer Reviewed
  • [Journal Article] Examination of accuracy of electron-electron Coulomb inter-actions in two-component relativistic methods2008

    • Author(s)
      J. Seino and M. Hada
    • Journal Title

      Chem. Phys. Letters 461

      Pages: 327-331

    • Peer Reviewed
  • [Journal Article] Relativistic quantum-chemical calculations of magnetizabilities of noble gas atoms using the Douglas-Kroll-Hess method2008

    • Author(s)
      T. Yoshizawa and M. Hada
    • Journal Title

      Chem. Phys. Letters 458

      Pages: 223-226

    • Peer Reviewed
  • [Journal Article] Effect of Tridentate Ligand on Structure, Electronic Structure, and Reactivity of Copper(I) Nitrite Complex : Role of Conserved Three-Histidines Ligand Environment of Type-2 Copper Site in Copper Containing Nitrite Reducatse2008

    • Author(s)
      M. Kujime et.al.
    • Journal Title

      J. A. C. S. 130(19)

      Pages: 6088-6098

    • Peer Reviewed
  • [Journal Article] Natural Orbital Analysis of Difference Density Matrix of Cyanide Fe(III) Porphyrins2008

    • Author(s)
      D. Yamaki et.al.
    • Journal Title

      AIP Conf. Proc. 1046

      Pages: 68-71

    • Peer Reviewed
  • [Journal Article] Excitation and Circular Dichroism Spectra of (-)-(3aS, 7aS)-2-chalcogena-trans-hvdrindans(Ch=S, Se, Te) : SAC and SAC-CI Calculations2008

    • Author(s)
      Y Honda et.al.
    • Journal Title

      J. Comp. Chem 29

      Pages: 612-621

    • Peer Reviewed
  • [Journal Article] Relativistic and Electron-Correlation Effects on Magnetizabilities Investigated by the Douglas Kroll Hess Method and the Second-Order Moller-Plesset Perturba-tion Theory

    • Author(s)
      T. Yoshizawa and M. Hada
    • Journal Title

      J. Comp. Chem (in press)

  • [Journal Article] Quantum-Chemical Calculations of Natural Circular Dichroism

    • Author(s)
      Y. Honda and M. Hada
    • Journal Title

      Computing Letters (in press)

  • [Presentation] Nuclear Volume Effects in Uranium Isotope Fractionation for Molecular systems2009

    • Author(s)
      M. Abe, et.al.
    • Organizer
      The International Conference on "Simulations and Dyna-mics for nanoscale and biological systems"
    • Place of Presentation
      東京大学
    • Year and Date
      20090304-06
  • [Presentation] 電子相関を考慮した磁気円二色性の研究2008

    • Author(s)
      本田康、中辻博、波田雅彦
    • Organizer
      第2回分子科学討論会
    • Place of Presentation
      福岡国際会議場
    • Year and Date
      20080924-27
  • [Presentation] An Endeavor at Constructing an Accurate Two-Component Relativistic Method for Heavy and super-Heavy Elements2008

    • Author(s)
      M. Hada and J. Seino
    • Organizer
      TACC2008
    • Place of Presentation
      Shanghai (China)
    • Year and Date
      20080922-27
  • [Presentation] Theoretical Studies on Circular Dichroism Spectra of L-Amino Acids2008

    • Author(s)
      Y. Honda
    • Organizer
      WATOC2008
    • Place of Presentation
      Sydney (Australia)
    • Year and Date
      20080914-19
  • [Presentation] Natural Orbital Analysis of NMR Chemical Shifts of Cyanide Fe(III) Porphyrins and Cu(I) with Tridentate Ligands2008

    • Author(s)
      D. Yamaki
    • Organizer
      WATOC2008
    • Place of Presentation
      Sydney (Australia)
    • Year and Date
      20080914-19
  • [Presentation] Ab initio Relativistic Calculations of Isotope Fractionation in the U(III)-U(IV) Exchange Reaction2008

    • Author(s)
      M. Abe, et.al.
    • Organizer
      WATOC2008
    • Place of Presentation
      Sydney (Australia)
    • Year and Date
      20080914-19
  • [Presentation] Applicability of Two-Component Relativistic Theory Based on the intim-Order Foldv-Wouthuysen Transformation in Many-Electron Systems2008

    • Author(s)
      J. Seino and M. Hada
    • Organizer
      WATOC2008
    • Place of Presentation
      Sydney (Australia)
    • Year and Date
      20080914-19
  • [Presentation] Ab initio Relativistic Calculations of Isotope Fractionation in the U(III)-U(IV) Exchange Reaction2008

    • Author(s)
      M. Abe, et.al.
    • Organizer
      Odyssey 2008
    • Place of Presentation
      Edmonton(Canada)
    • Year and Date
      20080601-05
  • [Presentation] Development of Accurate Two-Component Relativistic Methods and Calculations of Magnetic Properties of Molecules containing Heavy-Elements2008

    • Author(s)
      M. Hada, et.al.
    • Organizer
      1^<st> CMD International Symposium
    • Place of Presentation
      Seoul(Korea)
    • Year and Date
      20080530-0601
  • [Presentation] 2成分型相対論における2電子項の精度検討-無限次FW変換法の拡張-2008

    • Author(s)
      清野淳司、波田雅彦
    • Organizer
      第11回理論化学討論会
    • Place of Presentation
      慶応義塾大学
    • Year and Date
      20080522-24

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Published: 2010-06-11   Modified: 2016-04-21  

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