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2011 Fiscal Year Annual Research Report

高周期14属元素環状ポリイン配位子をもつ遷移金属錯体に関する研究

Research Project

Project/Area Number 21550033
Research InstitutionUniversity of Tsukuba

Principal Investigator

LEE Vladimir  筑波大学, 数理物質系, 講師 (90375410)

Keywords典型元素化学 / 環状不飽和化合物 / 環状ポリエン配位子 / πドナー / シクロブタジエン / テトラゲルマシクロブタジエン / 芳香族性 / ジアニオン
Research Abstract

ケイ素,ゲルマニウム,スズ等の高周期14族元素からなる不飽和化合物の化学は、現代有機金属化学の基盤研究として発展してきた。炭素化合物との特性の相違が明確になってきており,応用研究を視野にいれた展開の機が熟してきたといえる.そうした背景のもと,高周期元素からなる環状π配位子もつ有機金属錯体を合成し、その構造や性質の解明を研究目的とした。本基盤研究(C)の課題においては,平成21および22年度までに,ケイ素、ゲルマニウム等の高周期14族元素からなるシクロブタジエンジアニオンやシクロペンタジエニドの高効率的合成法を確立した.平成23年度に得た特筆すべき成果としては(1)テトラゲルマシクロブタジエンジアニオンを利用した遷移金属錯体の合成と構造解析(2)6π電子シクロブタジエン配位子の遷移金属配位子としての特性の解明(3)高周期元素シクロブタジエンジアニオンを用いた新しいシリレン錯体およびゲルミレン錯体の合成に達成したこと等が挙げられる.特に成果(2)に関しては,フロンティア軌道において高周期元素になるほどHOMOが上昇し、LUMOが下がることを反映し,極めて明確に周期性が認められることを実験的かつ理論的に明らかにした.つまり,テトラゲルマシクロブタジエン配位子は同族の炭素系やケイ素系の配位子と比較して,最も強いπドナーであることが今回の研究により明らかとなった.以上の研究成果は典型元素と遷移金属のさらなる共同効果,相乗効果を期待させるものであり,新たな環状π配位子として応用するための基盤となる.

  • Research Products

    (23 results)

All 2012 2011 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (15 results) Remarks (1 results)

  • [Journal Article] Novel Organometallic Reagents : Geminal Dianionic Derivatives of the Heavy Group 14 Elements (FORUM Article)2011

    • Author(s)
      V. Ya. Lee, A. Sekiguchi
    • Journal Title

      Inorg. Chem

      Volume: 50 Pages: 12303-12314

    • DOI

      DOI:10.1021/ic2006106

    • Peer Reviewed
  • [Journal Article] From Tetragermacyclobutene to Tetragermacyclobutadiene Dianion to Tetragermacyclobutadiene Transition Metal Complexes2011

    • Author(s)
      V. Ya. Lee, Y. Ito, H. Yasuda, K. Takanashi, A. Sekiguchi
    • Journal Title

      J. Am. Chem. Soc

      Volume: 133 Pages: 5103-5108

    • DOI

      DOI:10.1021/ja111596g

    • Peer Reviewed
  • [Journal Article] A Blue Digermene (t-Bu_2MeSi)_2Ge=Ge(SiMet-Bu_2)_22011

    • Author(s)
      V. Ya. Lee, K. McNeice, Y. Ito, A. Sekiguchi
    • Journal Title

      Chem. Commun

      Pages: 3272-3274

    • DOI

      DOI:10.1039/C0CC05415A

    • Peer Reviewed
  • [Journal Article] Si_3S-, Si_3Se-, Si_3Te-Bicyclo[1.1.0]butanes and Si_3S_2-Bicyclo[1.1.1]pentane2011

    • Author(s)
      Lee Vladimir
    • Journal Title

      Phosphorus, Sulr, and Silicon and the Related Elements

      Volume: 186 Pages: 1346-1350

    • DOI

      10.1080/10426507.2010.543102

    • Peer Reviewed
  • [Journal Article] 1,2-Dibromo-^3Δ-1,2,3,4-disiladigermetene2011

    • Author(s)
      Lee Vladimir
    • Journal Title

      Phosphorus, Sulfur, and Silicon and the Related Elements

      Volume: 186 Pages: 1351-1355

    • DOI

      10.1080/10426507.2010.543104

    • Peer Reviewed
  • [Journal Article] Making a Cyclotrigermene from a Digermene2011

    • Author(s)
      Lee Vladimir
    • Journal Title

      Organometallics

      Volume: 30 Pages: 4796-4797

    • DOI

      10.1021/om200619v

    • Peer Reviewed
  • [Journal Article] 1,2-Disila-3-germacyclopenta-2,4-dienes : "Heavy" Cyclopentadienes2011

    • Author(s)
      Lee Vladimir
    • Journal Title

      Russian Chemical Bulletin

      Pages: 2387-2388

    • Peer Reviewed
  • [Presentation] Synthesis, Structure and Reactivity of the Silylene Complexes of Group 4 Metals2012

    • Author(s)
      Lee Vladimir
    • Organizer
      92nd Annual Conference of The Chemical Society of Japan
    • Place of Presentation
      Keio University, Yokohama, Japan
    • Year and Date
      2012-03-25
  • [Presentation] Unexpected Formation of Tetraradicaloid Spiro-bis([1.1.1]propellane) from Heavy Tricyclo[2.1.0.0^<2,5>]pentane2012

    • Author(s)
      Lee Vladimir
    • Organizer
      92nd Annual Conference of The Chemical Society of Japan
    • Place of Presentation
      Keio University, Yokohama, Japan
    • Year and Date
      2012-03-25
  • [Presentation] Making a Cyclotrigermene from a Digermene2012

    • Author(s)
      Lee Vladimir
    • Organizer
      92nd Annual Conference of The Chemical Society of Japan
    • Place of Presentation
      Keio University, Yokohama, Japan
    • Year and Date
      2012-03-25
  • [Presentation] Spiro-bis([1.1.1]propellane) Cluster : Synthesis, Structure and Reactivity2012

    • Author(s)
      Lee Vladimir
    • Organizer
      2^<nd> International Symposium on Creation of Functional Materials (CCFM)
    • Place of Presentation
      University of Tsukuba, Tsukuba, Ibaraki, Japan
    • Year and Date
      2012-02-09
  • [Presentation] Synthesis, Structure and Reactivity of Silylene Complexes of Group 4 Metals2011

    • Author(s)
      Lee Vladimir
    • Organizer
      1^<st> International Symposium on Creation of Functional Materials (CCFM)
    • Place of Presentation
      University of Tsukuba, Tsukuba, Ibaraki, Japan
    • Year and Date
      2011-12-17
  • [Presentation] Spiro-bis([1.1.1]propellane) Cluster : A Stable Tetraradicaloid Species2011

    • Author(s)
      Lee Vladimir
    • Organizer
      1^<st> International Symposium on Creation of Functional Materials (CCFM)
    • Place of Presentation
      University of Tsukuba, Tsukuba, Ibaraki, Japan
    • Year and Date
      2011-12-17
  • [Presentation] From Digermene to Cyclotrigermene : An Unexpected Thermal Transformation2011

    • Author(s)
      Lee Vladimir
    • Organizer
      15^<th> Symposium of the Society of Silicon Chemistry Japan
    • Place of Presentation
      Seapal Suma Hotel, Kobe, Japan
    • Year and Date
      2011-10-21
  • [Presentation] From Silatrigermacyclobutenyl Radical to Tetraradicaloid Spiro-bis ([1.1.1]propellane) Cluster2011

    • Author(s)
      Lee Vladimir
    • Organizer
      15^<th> Symposium of the Society of Silicon Chemistry Japan
    • Place of Presentation
      Seapal Suma Hotel, Kobe, Japan
    • Year and Date
      2011-10-21
  • [Presentation] Schrock-type Silylene Complexes of Group 4 Metals : Synthesis, Structure and Reactivity2011

    • Author(s)
      Lee Vladimir
    • Organizer
      15^<th> Symposium of the Society of Silicon Chemistry Japan
    • Place of Presentation
      Seapal Suma Hotel, Kobe, Japan
    • Year and Date
      2011-10-21
  • [Presentation] Reactivity of Schrock-type Silylene Complexes of Group 4 Metals2011

    • Author(s)
      Lee Vladimir
    • Organizer
      22^<nd> Symposium on Physical Organic Chemistry
    • Place of Presentation
      University of Tsukuba, Tsukuba, Japan
    • Year and Date
      2011-09-21
  • [Presentation] Synthesis and Structure of Homoaromatic Silatrigermacyclobutenylium Ion2011

    • Author(s)
      Lee Vladimir
    • Organizer
      5^<th> Kanto Branch Conference of the Chemical Society of Japan
    • Place of Presentation
      東京農工大学,Tokyo, Japan
    • Year and Date
      2011-08-30
  • [Presentation] The Variations on a Theme of a Cyclobutadiene Dianion : Silicon and Germanium Versions2011

    • Author(s)
      Lee Vladimir
    • Organizer
      Sixteenth International Symposium on Silicon Chemistry (ISOS-XVI)
    • Place of Presentation
      Hamilton, Ontario, Canada(invited lecture)
    • Year and Date
      2011-08-14
  • [Presentation] Electronic Structure of Bis(silyl)silicon- and Bis(silyl)germanium-Centered Radicals (R_3Si)_2XE・(E=C, Si, Ge ; X=H, OH, Re(CO)_5, F) : EPR and DFT Studies2011

    • Author(s)
      Lee Vladimir
    • Organizer
      Sixteenth International Symposium on Silicon Chemistry (ISOS-XVI)
    • Place of Presentation
      Hamilton, Ontario, Canada
    • Year and Date
      2011-08-14
  • [Presentation] Novel Reactivity of a Highly Twisted Digermene2011

    • Author(s)
      Lee Vladimir
    • Organizer
      91^<th> Annual Conference of Japan Chemical Society
    • Place of Presentation
      Kanagawa University, Yokohama, Japan
    • Year and Date
      2011-03-26
  • [Presentation] Synthesis and Structure of the Sandwich Type Transition Metal Complex Featuring Tetragermacyclobutadiene Ligand2011

    • Author(s)
      Lee Vladimir
    • Organizer
      91^<th> Annual Conference of Japan Chemical Society
    • Place of Presentation
      Kanagawa University, Yokohama, Japan
    • Year and Date
      2011-03-26
  • [Remarks]

    • URL

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

URL: 

Published: 2013-06-26  

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