Development of Scientific Foundation for Small Molecule Conversion Using Multinuclear Metal Complexes

2023 Fiscal Year Final Research Report

• Project/Area Number: 19H00903
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Medium-sized Section 34:Inorganic/coordination chemistry, analytical chemistry, and related fields
• Research Institution: Osaka University
• Principal Investigator: Masaoka Shigeyuki 大阪大学, 大学院工学研究科, 教授 (20404048)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 錯体化学 / 多核金属錯体 / 電子移動反応 / 小分子変換 / 多電子酸化還元

Outline of Final Research Achievements

In this study, based on the structures of the active centers of enzymes and the ideas obtained from the researches conducted by our group, fundamental research on the development of molecular catalysts was promoted with the aim of creating innovative catalysts for small molecule conversion reactions involving multi-electron transfer. Specifically, we synthesized and structurally characterized a series of pentanuclear cluster complexes with "multi-electron transfer ability" and "bond rearrangement ability," and evaluated their electronic states and catalytic ability for small-molecule conversion reactions. As a result, it was found that the electron transfer ability of the pentanuclear cluster complexes varies depending on the type of metal ions present in the complexes, and that some pentanuclear cluster complexes are active in various small-molecule conversion reactions.

Free Research Field

錯体化学

Academic Significance and Societal Importance of the Research Achievements

様々な小分子を対象とした多電子酸化還元反応の触媒として、均一系錯体触媒や固体触媒、生体酵素を修飾した電極触媒などを対象に、これまでに複数の研究が行われてきた。これらの既存材料と比較し、本研究で対象とした多核クラスター錯体は、多核構造に由来する電子柔軟性により、酸化還元ストレスや化学変化ストレスに柔軟に対応し、結果として高い触媒耐久性を付与できることが本研究により示唆された。このように、多核クラスター錯体は、既存の触媒材料とは一線を画す優位性を有しており、本研究により得られた成果は小分子変換材料の開発に新たな戦略を提供するものである。