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2005 Fiscal Year Annual Research Report

速度論的安定化に基づく含ヘテロ元素動的錯体の自在合成

Research Project

Project/Area Number 14078213
Research InstitutionKyoto University

Principal Investigator

時任 宣博  京都大学, 化学研究所, 教授 (90197864)

Keywords立体保護 / 白金0価錯体 / C-H結合活性化 / C-Si結合活性化 / 二座ホスフィン配位子 / 4族金属 / β-ジケチミナト配位子 / イミド錯体
Research Abstract

本研究では,かさ高い置換基を有する新規な配位子を開発し,これらの配位子上の立体的効果と電子的効果を巧みに組み合わせることにより,新規な結合様式を有する含ヘテロ元素動的錯体を安定化し合成・単離することを目的とする。さらに,得られた錯体の性質を解明し,その機能の発現を目指す。
申請者らは昨年度までの研究において,かさ高い置換基であるBbt(2,6-[(Me_3Si)_2CH]_2-4-[(Me_3Si)_3C]-C_6H_2)基を有する新規な二座ホスフィン配位子{Bbt(Me)PCH_2}_2(1)を合成し、1を用いたジクロロ白金錯体[PtCl_2(1)](2)の合成に成功している。2の還元反応による0価白金錯体[Pt(1)](3)の合成を試みたところ,一旦発生した3のBbt基のo-位のビス(トリメチルシリル)メチル基のメチル基のC-H結合に白金が挿入して生成したと考えられる白金-ヒドリド錯体(4)が生成した。さらに,4の熱反応を検討したところ,C-Si結合が活性化され,メチル(シリル)白金錯体5が得られた。本反応では,通常は遷移金属挿入反応に対して安定なC-Si結合が活性化されており,非常に興味深い。
また,昨年度までの研究において,Tbt(2,4,6-[(Me_3Si)_2CH]_3-C_6H_2)基を有する4族金属のβ-ジケチミナト錯体[MCl_3{(TbtN)C(Me)CHC(Me)(NMes)}(thf)_n](6)(M=Ti,Zr,Hf ; n=0or1)の還元反応により,イミド錯体[M=NTbt{C(Me)CHC(Me)(NMes)}(Cl)(thf)](7)(M=Ti,Zr,Hf)が生成することを明らかにしている。今年度は,6,7がオレフィン重合反応において触媒活性を示すこと,また従来にない非常に大きな分子量のポリオレフィンを生成することを明らかにした。

  • Research Products

    (23 results)

All 2006 2005

All Journal Article (22 results) Book (1 results)

  • [Journal Article] Bis[2-(phenylsulfanyl)benzenethiolato]palladium(II)2006

    • Author(s)
      D.Shimizu
    • Journal Title

      Acta Cryst.E 62

      Pages: m166-m167

  • [Journal Article] Synthesis of Bis(germacyclopropa)benzenes and Structures of Their Annelated Benzene Rings2006

    • Author(s)
      T.Tajima
    • Journal Title

      Organometallics 25

      Pages: 230-235

  • [Journal Article] Synthesis and Properties of a New Kinetically Stabilized Digermyne : New Insights for a Germanium Analogue of an Alkyne2006

    • Author(s)
      Y.Sugiyama
    • Journal Title

      J.Am.Chem.Soc. 128

      Pages: 1023-1031

  • [Journal Article] Syntheses, Structures, and Properties of the First Stable 1,1'-Bis(diphosphenyl)ferrocenes2006

    • Author(s)
      N.Nagahora
    • Journal Title

      Chem.Lett. 35

      Pages: 220-221

  • [Journal Article] A Stable Neutral Stannaaromatic Compound : Synthesis, Structure and Complexation of a Kinetically Stabilized 2-Stannanaphthalene2006

    • Author(s)
      Y.Mizuhata
    • Journal Title

      J.Am.Chem.Soc. 128

      Pages: 1050-1051

  • [Journal Article] Reduction of Tetravalent Group 4 Metal Complexes Supported by an Extremely Bulky, Unsymmetrically Substituted beta-Diketiminato Ligand Leading to the Regioselective C=N Bond Cleavage Giving Ring-Contracted Metal-Imido Complexes2006

    • Author(s)
      H.Hamaki
    • Journal Title

      Organometallics (印刷中)

  • [Journal Article] Photophysical and Photochemical Processes of 9,10-Dihydro-9-silaphenanthrene Derivatives : Photochemical Formation and Electronic Structure of 9-Silaphenanthrenes2006

    • Author(s)
      H.Hiratsuka
    • Journal Title

      J.Phys.Chem.A (印刷中)

  • [Journal Article] Systematic Studies on Redox Behavior of Homonuclear Double-bond Compounds of Heavier Group 15 Elements2005

    • Author(s)
      T.Sasamori
    • Journal Title

      Chem.Lett. 34

      Pages: 166-167

  • [Journal Article] Reactions of a Germacyclopropabenzene with Elemental Chalcogens : Syntheses and Structures of a Series of Stable 2H Benzo[c][1,2]chalcogenagermetes2005

    • Author(s)
      T.Sasamori
    • Journal Title

      Organometallics 24

      Pages: 612-618

  • [Journal Article] Reactivities of Germacyclopropabenzene toward Some Transition Metal Carbonyl Complexes2005

    • Author(s)
      T.Tajima
    • Journal Title

      Appl.Organometal.Chem. 19

      Pages: 570-577

  • [Journal Article] Syntheses of Polythioethers Tethered with Bulky Aryl Groups and Their Complexation with Late-Transition Metals2005

    • Author(s)
      N.Tokitoh
    • Journal Title

      Phosphorus, Sulfur, and Silicon 180

      Pages: 1241-1245

  • [Journal Article] Telluradistibirane and Telluradibismirane : Three-Membered Heterocycles of Heavier Main Group Elements2005

    • Author(s)
      T.Sasamori
    • Journal Title

      Angew.Chem.Int.Ed. 44

      Pages: 3717-3720

  • [Journal Article] Synthesis of Kinetically Stabilized 1-Silanaphthalenes and Their Properties2005

    • Author(s)
      A.Shinohara
    • Journal Title

      Bull.Chem.Soc.Jpn. 78

      Pages: 977-987

  • [Journal Article] Synthesis and Structure of a Stable 1,3-Dihydrotriphosphane and Its Thermal Decomposition Leading to the Formation of the Corresponding Phosphine and Diphosphene2005

    • Author(s)
      N.Nagahora
    • Journal Title

      Organometallics 24

      Pages: 3074-3080

  • [Journal Article] Structure and Properties of an Overcrowded 1,2-Dibromodigermene2005

    • Author(s)
      T.Sasamori
    • Journal Title

      Organometallics 24

      Pages: 3309-3314

  • [Journal Article] Dichloro[1,2-bis(phenylsulfanyl)benzene]palladium(II)2005

    • Author(s)
      N.Takeda
    • Journal Title

      Acta Cryst.E 61

      Pages: m1408-m1410

  • [Journal Article] Generation of 9-Stannaphenanthrene and Its Reactivities2005

    • Author(s)
      Y.Mizuhata
    • Journal Title

      Chem.Lett. 34

      Pages: 1088-1089

  • [Journal Article] Generation and Reactions of Overcrowded Diaryldilithiostannane and Diaryldipotassiostannane2005

    • Author(s)
      T.Tajima
    • Journal Title

      Eur.J.Inorg.Chem.

      Pages: 4291-4300

  • [Journal Article] Synthesis and Structure of a Distorted Octahedral Palladium(II) Complex Coordinated with a New Tetrathioether Ligand Tethered with Bulky Substituents2005

    • Author(s)
      N.Takeda
    • Journal Title

      Inorg.Chem. 44

      Pages: 8561-8568

  • [Journal Article] Synthesis and Properties of η^6-Silabenzene-M(CO)_3 Complexes (M= Cr and Mo)2005

    • Author(s)
      A.Shinohara
    • Journal Title

      Organometallics 24

      Pages: 6141-6146

  • [Journal Article] Synthesis and Properties of a Stable 6-Stannapentafulvene2005

    • Author(s)
      Y.Mizuhata
    • Journal Title

      Chem.Commun.

      Pages: 5876-5878

  • [Journal Article] Unusual Carbon-Sulfur Bond Cleavage in the Reaction of a New Type of Bulky Hexathioether with a Zerovalent Palladium Complex2005

    • Author(s)
      D.Shimizu
    • Journal Title

      Chem.Commun.

      Pages: 177-179

  • [Book] Encyclopedia of Inorganic Chemistry, 2nd Edition2005

    • Author(s)
      T.Sasamori
    • Total Pages
      1698-1740 (43)
    • Publisher
      John Wiley & Sons, Chichester

URL: 

Published: 2007-04-02   Modified: 2016-04-21  

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