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十六族元素を含む新型遷移金属クラスター化合物の合成と化学的性質

Research Project

Project/Area Number 07404038
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Inorganic chemistry
Research InstitutionOsaka City University

Principal Investigator

磯辺 清 (磯部 清)  大阪市立大学, 理学部, 教授 (70101285)

Co-Investigator(Kenkyū-buntansha) 田所 誠  大阪市立大学, 理学部, 講師 (60249951)
西岡 孝訓  大阪市立大学, 理学部, 講師 (10275240)
木下 勇  大阪市立大学, 理学部, 助教授 (80128735)
鈴木 孝義  大阪大学, 大学院・理学研究科, 助手 (80249953)
Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥37,700,000 (Direct Cost: ¥37,700,000)
Fiscal Year 1997: ¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 1996: ¥9,800,000 (Direct Cost: ¥9,800,000)
Fiscal Year 1995: ¥24,100,000 (Direct Cost: ¥24,100,000)
Keywords酸化物クラスター / ESMS / 不完全二重立方体型 / ダブルブックシェル / 溝構造 / アンフォテリック / オキソ型メタレート / クラスター / ダブルブックシェルフ型 / 三重立方体積層型 / 骨格変換 / 同体触媒 / 動的過程 / 分子内転移 / ^<17>ONMR / windscreen-wiper motion / バタフライ型 / 連結不完全キュバン型 / 枝分れ型
Research Abstract

本年度の研究では,格子欠損型や不完全立方体型といった構造特異的な反応場を有する酸化物クラスター骨格の構築を行った.また、電子スプレー質量分析法(Electrospray Mass Spectrometry=ESMS)を利用してクラスター骨格構造構築のメカニズム,その骨格構造に基づいた特異な反応を明らかにした.
研究対象となったクラスターは,不完全二重立方体型[(Cp*Rh)_2Mo_3O_9(OMe)_4](1);ダブルブックシェルフ型[NBu^n_4]_2[(Cp*Rh)_2Mo_6O_<20>(OMe)_2](2)(Cp*=η^5-C_5Me_5)といった低原子価,高原子価金属イオンを同一分子内に空間的に配列したタイプであり,それぞれの合理的かつ簡便な合成法を見出した.クラスター1と2は[Cp*Rhμ-Cl)Cl]_2および[NBu^n_4]_2[Mo_2O_7]を出発ユニットとして,それぞれメタノール中,モル比1:2および1:4で反応させることにより高収率で得ることが出来る.ESMSによりその生成メカニズムを明らかにした.
クラスター2の持つ複数の反応活性な溝構造(defect structure)に注目し,有機金属フラグメント(求電子剤),オキソメタレート(求核剤)との反応を行った.その結果,2→1,2→[(Cp*Rh)_4Mo_4O_<16>](トリプルキュバン型)といった極めてユニークな骨格変換反応を見いだし,さらに,クラスター2がアンフォテリックな反応性を示すことを見出した.この特異な反応性は,クラスター2が持つ性質の異なった2種のdefect structure,すなわち,塩基性の高い架橋酸素原子に囲まれた"small defect"およびRh(III)中心が存在する"large defect"に起因することを明らかにした.
クラスター1と2の骨格構築のメカニズムおよびそれらの反応性を明らかにする上で,ESMSが非常に有効かつ強力な手法であることを明らかにした.

Report

(3 results)
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] Rimo Xi: "Synthesis and characterization of pentamethylcyclopentadienylrhodium(III)and-iridium(III)complexes with 1,2-benzenedithiolate:[(Cp*Rh)_2(μ(S)-1,2-C_6H_4S_2-S,S')_2],[(Cp*Rh)_2(μ(S)-1,2-C_6H_<4S>-S,S')(μ(S)-1,2-C_6H_4S(SO_2)-S,S')and[(Cp^*Ir)(1,2-C_6H_4S_2-S,S')](Cp^*=η^5-C_5(CH_3)_5)" J.Organoment.Chem.549. 117-125 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Vadim Yu.Kukushukin: "Hydrogen-bonding Patterns in Oxime/Oximato Platinum(II)Species Providing the Formation of One-Dimensional Chains,Two-Dimensional Networks,and Cages" Inorg.Chem.36. 6157-6165 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Kazuo Kashiwabara: "Oxidative Additions of Dichloromethane and Cyclooctasulfur to Rhodium(I)Complexes Containing(2-Aminoethyl)-dimethylphosphine of-diphenylphosphine" J.Chem.Soc.Dalton Trans.1075-1081 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Satoshi Takara: "A Novel Organometallic Oxide Cluster with Multi-Valley Sites:Synthesis and Structure of [NBun4]2[{(h5-C5Me5)Rh}2Mo6O20(OMe)2] and Its Framework Transformations" J.Chem.Soc.Chem.Commun.891-892 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Koji Tanaka: "Catalytic Generation of Oxalate through a Coupling Reaction of Two CO_2 Molecules Activated on [(Ir(μ^5-C5Me_5))2(Irμ^4-C5Me_5)CH_2CN)(μ3-S)_2]" Inorg.Chem.37. 120-126 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Takanori Nishioka: "Formation and Dynamic Properties of Triangular Rhodium μ_3-Sulfido Complex,[Rh_3Cp^*3(μ3-η^2-II-C_2H_2)(μ_3-S)]^<2+>(Cp^*=η^5-C_<>Me_5),Including Acetylene Ligand Generated by the Coupling and Deprotonation of Two Bridging Methylene Units in Dirhdium Complex" Organometallics. (印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Masaaki Abe: "Effects of a Vanadate-Support on the Reactivity of the bis (Methallyl) Rhodium Complex [{(η^3-C_4H_7)_2 (1/4O_<12>)}]^<2->. A Comparison with the Acetylacetonato Complecs" J. Cluster Sci.,. 7. 103-107 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Masaki Abe: "Crystallographic and Dynamic NMR Evidence for Orgnometallic Fragments Pivoting on a Molecular Oxide Surface" Inorg. Chem.,. 35. 5114-5115 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Takanori Nishioka: "Conversion of Rectangular Tetrasulfide Ligand in Tetrarhodium Complex, [{Rh_2 (Cp^*)_2 (μ-CH_2)_2}_2 (μ-S_4)]^<2+> (Cp^*=η^5-C_5Me_5), into Disulfide……" Chem. Lett.,. 10. 911-912 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Takayoshi Suzuki: "Preparation and Characterization of Rhodium (III) Complexes Containing 1, 1, 1-Tris (dimethylphosphinomethyl) ethane (tdmme). Structure……" J. Chem. Soc. Dalton Trans.,. 19. 3779-3786 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Seiji Ogo: "Structures, Bonding and Rectivity of M-S-M' (M and M'=Rh, W, and Cu) Group in Higher-Nuclearity Heterometallic Sulfide Clusters" Inorg. Chem.,. 35. 6093-6101 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Vadim Yu. Kurushkin: "A Novel Type of Amidato Coardination : the Metallo cycle Rh-Rh-NH-C (Me)=0" Chem. Lett.,. 2. 189-190 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Suzuki,H.Kotsuki,K.Isobe,N.Moriya,Y.Nakagawa,and M.Ochi: "Drastic Structural Change in Silver (I) Complexes with Alteration of the Optical Activity of a Pyridine Derivative Ligard:Helical Arrayo with Extended Structure and an Optically Inactive Dinuclear Complex" Inorg.Chem.34. 530-531 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] A.M.Mebel,K.Morokuma,and K.Isobe: "A Theoretical Study of Rectangular Tetrasulfur in a Gas Phase and in the Tetranuclear [{Rh_2(7^5-C_5Me_5)_2(μ-CH_2)_2}_2(μ-S_4)]^<2+>Complex" Inorg.Chem.34. 1208-1211 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Ogo,T.Suzuki,and K.Isobe: "A Unique Three-Step Cyclic Reaction Sequence of Heterotrimetallic Sulfide Clusters. Structures and Propeties of [{Cp^*RhP(OEt)_3(μ-WS_4)(CuClCb}_2(μ-Cl)_2](Cp_*=η^5-C_5Me_5)with a Branched Structure and [{Cp^*RhP(OEt)_3(μ-WOS_3)(CuCl)Cu}_2(μ-Cl)_2]with a Linked Incomplete Cubane-Type Structure" Inorg.Chem.,. 34. 1304-1305 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K.Takahashi,M.Yamaguchi,T.Shido,H.Otani,K.Isobe,and M.Ichikawa: "Molecular Modelling of Supported Metal Catalysts :SiO_2-grafted[{η^3-C_4H_7)_2Rh}_2V_4O_<12>]and [{Rh(C_5Me_5)}_4V_6O_<19>] are Catalytically Active in the Selective Oxidation of Propene to Aetone" J.Chem.Soc.,Chem.Commun.,. 1301-1303 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y.Kushi,H.Nagao,T.Nishioka,K.Isobe,and K.Tanaka: "Remarkable Decrease in Over potential of Oxalate Formation in Electrochemical CO_2 Reduction by a Metal-sulfide Cluster" J.Chem.Soc.,Chem.Commun.,. 1223-1224 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Yamaguchi,T.Shido,H.Ohtani,K.Isobe,and Ichikawa: "EXAFS/FTIR Characterization and Selective Hydration of Acetonitrile on Silica-supported [(RhCp^*)_4V_6O_<19>]" Chem.Lett.,. 717-718 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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