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2023 Fiscal Year Final Research Report

Development ans Application of Stimuli-responsive Heterobimetallic Carbene Complexes

Research Project

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Project/Area Number 21K05070
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 33020:Synthetic organic chemistry-related
Research InstitutionOsaka University

Principal Investigator

Hoshimoto Yoichi  大阪大学, 大学院工学研究科, 准教授 (30710074)

Project Period (FY) 2021-04-01 – 2024-03-31
Keywordsカルベン / ルイス酸 / 多核金属錯体
Outline of Final Research Achievements

In this study, we have examined the preparation and reactivity of heterobimetallic carbene complexes in which the separation and approach of the two metal centers can be controlled by the stimuli-responsive conformational isomerization of the multifunctional carbene ligands. As a result, we have developed a Lewis acid-triggered reversible modulation of the local environment around the nickel centers in the Ni/Al heterobimetallic carbene complexes. We also investigated the reactivity of N-borane-substituted cyclic phosphineimides (BCPIs) derived from multifunctional carbene ligands with phosphineimides instead of phosphine oxides and demonstrated that cationic boron species can be generated via a formal substitution reaction of chlorine from chloroborane.

Free Research Field

有機金属化学

Academic Significance and Societal Importance of the Research Achievements

本研究は、ダイナミックな構造変化を異種二核金属カルベン錯体に組み込むことで、異種二核金属カルベン錯体の新たな反応性・機能を開拓し、その利用法を拡大した。これにより、剛直な配位子を用いて二つの金属を離隔させる設計に留まってきた従来研究とは明白に一線を画した、新たな金属錯体の設計戦略を提唱した。また、ルイス酸を用いた配位子引き剥がしタイプの反応空間制御手法は、従来の研究において主流であったルイス塩基を用いた置換タイプに対し、全く異なるコンセプトを世界に先駆けて提唱したことになる。これは、異種多核金属錯体の応用を促進する上で寄与するところがおおきい。

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Published: 2025-01-30  

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