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Studies on Paramagnetic Species of Heavier Group 14 Elements

Research Project

Project/Area Number 19550029
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Organic chemistry
Research InstitutionUniversity of Tsukuba

Principal Investigator

ICHINOHE Masaaki  University of Tsukuba, 大学院・数理物質科学研究科, 准教授 (90271858)

Co-Investigator(Renkei-kenkyūsha) SEKIGUCHI Akira  筑波大学, 大学院・数理物質科学研究科, 教授 (90143164)
Research Collaborator INOUE Shigeyoshi  筑波大学, 大学院・数理物質科学研究科, 大学院・学生
NAGATA Michiyo  筑波大学, 大学院・数理物質科学研究科, 大学院・学生
NOZAWA Takeshi  筑波大学, 自然学類, 大学生
Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2007: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords有機元素化学 / 構造有機化学 / 高周期典型元素 / 常磁性化学種 / 有機ケイ素化合物 / ケイ素ラジカル / ジシラキノジメタン
Research Abstract

ケイ素=ケイ素二重結合化合物の1電子酸化で得られるカチオンラジカル種では、スピン及び陽電荷が二つの骨格ケイ素上に非局在化した電子状態を持つのに対し、1電子還元で得られるアニオンラジカル種ではスピン及び陰電荷が各々の骨格ケイ素に局在化した電子状態を持つことを明らかにした。また、二つのケイ素ラジカル種をパラ-及びメタ-フェニレン基で連結した分子を合成し、パラフェニレン体は閉殻1重項分子である一方、メタフェニレン体は基底3重項状態を示すビラジカル種であることを明らかにした。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (18 results)

All 2009 2008 2007 Other

All Journal Article (12 results) (of which Peer Reviewed: 12 results) Presentation (5 results) Remarks (1 results)

  • [Journal Article] The IsolableCation-radical of Disilene Synthesis, Characterization, and a Reversible One-electron Redox System2008

    • Author(s)
      Shigeyoshi Inoue, Masaaki Ichinohe, Akira Sekiguchi
    • Journal Title

      Journal of the American Chemical Society 130巻

      Pages: 6078-6079

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Isolable AlkaliMetal-substituted Silyl Radicals(^tBu_2MeSi)_2SiM (M=Li, Na, K) : Electronically and Sterically Accessible Planar Silyl Radicals2008

    • Author(s)
      Shigeyoshi Inoue, Masaaki Ichinohe, Akira Sekiguchi
    • Journal Title

      Organometallics 27巻

      Pages: 1358-1360

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Isolable Alkali Metal-substituted Silyl Radicals (tBu2MeSi)2 SiM (M = Li, Na. K): Electronically and Sterically Accessible Planar Sily1 Radicals2008

    • Author(s)
      S. Inoue
    • Journal Title

      Organometallics 27

      Pages: 1358-1360

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Isolable Cation-radical of Disilene: Synthesis, Characterization, and a Reversible One-electron Redox System2008

    • Author(s)
      S. Inoue
    • Journal Title

      Journal of the American Chemical Society 130

      Pages: 6078-6079

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 1,3-Digerma-2-gallata-and -indataallenic Anions: The First Compounds with Ge=Ga or Ge=In Double Bonds2008

    • Author(s)
      N. Nakata
    • Journal Title

      Chemistry Letters 37

      Pages: 1146-1147

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Stable Silagermene (tBu3Si)2Si=Ge(Mes)2 (Mes=2,4,6-trimethylphenyl): Synthesis, X-ray Crystal Structure, and Thermal Isomerization2008

    • Author(s)
      M. Igarashi
    • Journal Title

      Heteroatom Chemistry 37

      Pages: 649-653

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Isolable Silylene Anion Radical : Structural Characteristics in the Solid State andin Solution2007

    • Author(s)
      Shigeyoshi Inoue, Masaaki Ichinohe, Akira Sekiguchi
    • Journal Title

      Journal of the American Chemical Society 129

      Pages: 6096-6097

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] An Isolable Disilyne Anion Radical and a New Route to the Disilenide Ion upon Reduction of a Disilyne2007

    • Author(s)
      Rei Kinjo, Masaaki Ichinohe, Akira Sekiguchi
    • Journal Title

      Journal of the American Chemical Society 129巻

      Pages: 26-27

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Heavy Cyclopropene Analogues R_4SiGe_2 and R_4Ge_3(R=SiMe^tBu_2)-New Members of the Cyclic Digermenes Family2007

    • Author(s)
      V. Ya. Lee
    • Journal Title

      Journal of Organometallic Chemistry 692

      Pages: 10-19

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Heavy Analogues of the 6π-Electron Anionic Ring Systems: Cyclo-pentadienide Ion and Cyclobutadiene Dianion2007

    • Author(s)
      V. Ya. Lee
    • Journal Title

      Journal of Organometallic Chemistry 692

      Pages: 2800-2810

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 1,2,5,6-Tetrasilabenzobenzvalene: A Valence Isomer of 1,2,3,4-Tetra-silanaphthalene2007

    • Author(s)
      K. Takanashi
    • Journal Title

      Chemistry Letters 36

      Pages: 1158-1159

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] (η^5-Cyclopentadienyl)(η^4-tetrasila-and η^4-trisilagermacyclobutadiene)-cobalt: Sandwich Complexes Featuring Heavy Cyclobutadiene Ligands2007

    • Author(s)
      K. Takanashi
    • Journal Title

      European Journal Inorgaic Chemistry

      Pages: 5471-5474

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] ジシラキノジメタンの合成と構造2009

    • Author(s)
      野澤竹志, 永田美千代, 一戸雅聡, 関口章
    • Organizer
      日本化学会第89春季年会
    • Place of Presentation
      船橋
    • Related Report
      2008 Final Research Report
  • [Presentation] Silicon Derivatives of a Cyclopropenylium Ion: The Persila and Silicon-Carbon Hybrid 2n Aromatic Compounds.2008

    • Author(s)
      M. Igarashi
    • Organizer
      第15回ケイ素化学国際会議(ISOS-XV)
    • Place of Presentation
      Jeju, Korea
    • Related Report
      2008 Annual Research Report
  • [Presentation] シクロプロペニリウムイオン高周期類縁体:トリシラ及びジシラシクロプロペニリウムイオンの合成、構造、及び反応性2008

    • Author(s)
      五十嵐正安
    • Organizer
      第55回有機金属化学討論会
    • Place of Presentation
      大阪府立大学中百舌鳥キャンパス
    • Related Report
      2008 Annual Research Report
  • [Presentation] テトラシリルジシレンの酸化反応2007

    • Author(s)
      井上茂義, 一戸雅聡, 関口章
    • Organizer
      ジシレンカチオンラジカル及びトリシラアリルカチオンの合成と構造
    • Place of Presentation
      広島
    • Related Report
      2008 Final Research Report
  • [Presentation] Si_4-W Systems: Tungsten Complexes Featuring η^4-and η^2-Coordination of the Si_4-Ligand2007

    • Author(s)
      K. Takanashi
    • Organizer
      第1回アジアケイ素化学会議(ASiS-1)
    • Place of Presentation
      Hotel Zao-Heights, Zao Town, Miyagi
    • Related Report
      2007 Annual Research Report
  • [Remarks]

    • URL

      http://www.chem.tsukuba.ac.jp/sekiguch/

    • Related Report
      2007 Annual Research Report

URL: 

Published: 2007-04-01   Modified: 2016-04-21  

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