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Synthesis of thiacalixarene metal complexes with unique structural features and chemical properties

Research Project

Project/Area Number 16350035
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Inorganic chemistry
Research InstitutionTokyo University of Science

Principal Investigator

HIDAI Masanobu  Tokyo University of Science, Faculty of Industrial Science and Technology, Professor, 基礎工学部, 教授 (60011011)

Co-Investigator(Kenkyū-buntansha) SUZUKI Toshiaki  RIKEN, Senior Research Scientist, 侯有機金属化学研究室, 先任研究員 (20332257)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥12,000,000 (Direct Cost: ¥12,000,000)
Fiscal Year 2005: ¥4,600,000 (Direct Cost: ¥4,600,000)
Fiscal Year 2004: ¥7,400,000 (Direct Cost: ¥7,400,000)
Keywordsthiacalixarene / sulfur / multimetallic complex / early-late heterobimetallic complex / チタン / ロジウム / C-O結合切断 / C-S結合切断 / 前周期-後周期 / 異種複核錯体 / ELHB錯体 / ルテニウム / イリジウム / ニオブ / モリブデン / 窒素固定
Research Abstract

Sulfur-containing thiacalix[4]arene and its derivatives are expected to react with transition metal complexes to form various types of mononuclear and multimetallic complexes with a thiacalix[4]arene cavity. These complexes might provide unique reaction sites for chemical transformations. We have here revealed the difference in reactivities of thiacalix[4]arenes towards various transition metal complexes.
The reactions of [Cp^*MCl_2]_2 (Cp^*=η^5-C_5Me_5,M=Rh,Ir) with thiacalix[4]arene (TC4A(OH)_4) and tetramercaptothiacalix[4]arene (TC4A(SH)_4) gave the mononuclear complexes [(Cp^*M){η^3-TC4A(OH)_2(O)_2}] and the dinuclear complexes [(Cp^*M)_2{η^3:η^3-TC4A(S)_4}], respectively, while the analogous reactions with dimercaptothiacalix[4]arene (TC4A(OH)_2(SH)_2) produced the tetranuclear complexes [(Cp^*M)_2(Cp^*MCl_2)_2{η^3:η^3:η^1:η^1-TC4A(O)_2(S)_2}], which formed via [(Cp^*MCl)_2{η^2:η^2-TC4A(OH)_2(S)_2}] and [(Cp^*M)_2{η^3:η^3-TC4A(O)_2(S)_2}].
The early-late heterobimetallic (ELHB) complexes were obtained from the reaction of [(CpM^1Cl_2){η^3-TC4A(OH)_2(O)_2} (M^1=Nb,Ta) with [Cp^*M^2Cl_2]_2 (M^2=Rh, Ir) in the presence of NEt_3. The reaction of [(CpTi){TC4A(OH)(O)_3}] with [RuHCl(PPh_3)_3] in the presence of NaH gave an octanuclear Ti_2Ru_2Na_4 complex.
A stepwise reaction of thiacalix[4]arene (TC4A(OH)_4) with [CpTiCl_3]-NEt_3 and cis-[Mo(N_2)_2(PMe_2Ph)_4] afforded a new Ti-Mo heterobimetallic complex [Ti(μ_2-C_5H_5)MoH(PMe_2Ph)_2{TC4A(O)_4}] which shows an unusual α-agostic μ^2-η^5:η^2-coordination of a cyclopentadienyl ligand to both Ti and Mo.
The present work demonstrates the usefulness of thiacalix[4]arene and its derivatives as excellent ligands for the synthesis of multimetallic complexes and activation of substrates on the multimetallic sites.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (6 results)

All 2005 2004

All Journal Article (6 results)

  • [Journal Article] Syntheses and structures of mono-, di- and tetranuclear rhodium or iridium complexes of thiacalix[4]arene derivatives2005

    • Author(s)
      Kenji HIrata
    • Journal Title

      Chem. Commun.

      Pages: 3718-3720

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Syntheses and structures of mono-, di- and tetranuclear rhodium or iridium complexes of thiacalix[4]arene derivatives2005

    • Author(s)
      Kenji Hirata
    • Journal Title

      Chem.Commun.

      Pages: 3718-3720

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Syntheses and structures of mono-, di- and tetranuclear rhodium or iridium complexes of thiacalix[4]arene derivatives2005

    • Author(s)
      Kenji Hirata
    • Journal Title

      Chem.Commun. 29号

      Pages: 3718-3720

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Ti-Mo heterobimetallic thiacalix[4]arene complex containing an unusual α-agostic μ^2-η^5 : η^2-cyclopentadienyl ligand2004

    • Author(s)
      Shin Takemoto
    • Journal Title

      Chem. Commun.

      Pages: 838-839

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Ti-Mo heterobimetallic thiacalix[4]arene complex containing an unusual α-agostic μ^2-η^5:η^2-cyclopentadienyl ligand2004

    • Author(s)
      Shin Takemoto
    • Journal Title

      Chem.Commun.

      Pages: 838-839

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Ti-Mo heterobimetallic thiacalix[4]arene complex containing an unusual α-agostic μ_2-η^5:η^2-cyclopentadienyl ligand2004

    • Author(s)
      Shin Takemoto
    • Journal Title

      Chemical Communications 7号

      Pages: 838-839

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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