Tokyo Institute of Technology · Materials Science
Munetaka Akita 교수의 연구실은 주로 철, 팔라듐, 티타늄 등 전이금속을 중심으로 한 유기금속 화합물의 합성과 반응성에 초점을 맞추고 있습니다. 특히 다핵 금속을 가진 알킨 및 다이알킨 유도체, 다이엔 및 사이클로옥타디엔 리간드를 갖는 루테늄 및 팔라듐 복합체의 구조와 반응성 연구를 통해 분자 전자공학, 스위치 기능, 분자 도체 등 신소재 응용을 탐색하고 있습니다. 또한 광학적, 전기화학적 성질을 갖는 광크로믹 유기금속 복합체의 개발을 통해 스마트 물질 시스템의 구현에도 기여하고 있습니다.
Figures are computed from collected data and may differ slightly.
Rhodium−diene complexes with the TpiPr ligand, TpiPrRh(diene) (TpiPr = hydridotris(3,5-diisopropylpyrazolyl)borate; diene = 1,5-cyclooctadiene (cod) (1), norbornadiene (nbd) (2)), are prepared by treatment of [Rh(μ-Cl)(diene)]2 with KTpiPr or TlTpiPr. The structure of 1, characterized by X-ray crystallography, contains the κ2-coordinated TpiPr ligand, and its central Rh atom adopts a square-planar geometry, whereas the unit cell of 2 contains two independent molecules: a square-planar structure
Abstract A series of 1-alkynes (RC≡CH where R=Et, n-Pr, n-Bu, n-C6H13, cyclohexyl, Ph, Me3Si, Me3SiCH2, and Me3SiOCH2) was found to dimerize regioselectively (>99%) to 2,4-disubstituted 1-buten-3-ynes in 92–99% yields by catalysis of (η5-C5Me5)2TiCl2/i-PrMgBr at 30 °C in 1–3 h. The catalyst system is also effective for the regioselective codimerization of various 1-alkynes with 1-ethynylcyclohexene or ethynylbenzene.
Polycarbon species with pi-conjugated systems interact with attached metal fragments to exhibit a variety of intriguing structural features and chemical properties. In this Perspective, following an introductory account of polycarbon cluster compounds and the unique chemical transformations on them which cannot easily be realized by mononuclear species, the properties of polynuclear complexes connected by pi-conjugated carbon-rich bridging ligands will be discussed with emphasis on those applica
Recent progress of photochromic metal complexes is summarized with emphasis on "photochromic organometallics" with a M−C(photochromic unit) bond. Stimuli-responsive systems including the photochromic system are essential components of smart chemical systems, where the system recognizes changes of the environment so as to trigger a chemical function required for the smart chemical system. Combination with metal components, which exhibit unique properties such as redox and photophysical properties
A series of polyynyl and polyynediyl complexes of iron, Fp*−(C⋮C)n−H [n = 2 (3)) and Fp*−(C⋮C)n−Fp* (n = 2 (4), 4 (5); Fp* = (η5-C5Me5)Fe(CO)2), have been prepared, and their linear structure has been confirmed by X-ray crystallography.
Abstract A variety of polymetallic C2 (C2 and C2H) complexes are prepared by structure expansion of parent metal acetylide complexes, Fp*–C≡C–H (1) and Fp*–C≡C–Fp* (2) [Fp* = (η5–C5Me5)Fe(CO)2], and their structure and reactivity have been investigated as models for surface-bound C2 species formed during catalytic CO hydrogenation. The results summarized here involve (1) intramolecular 1,2-H shift of the C2H complexes relevant to the 1-alkyne-to-vinylidene rearrangement within a metal coordinati
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