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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

대한화학회 제121회 학술발표회 및 총회 Mechanochemically induced synthesis of Ru, Rh, and Ir based macro-metallacycles via C–H activation

등록일
2018년 2월 12일 15시 04분 43초
접수번호
5834
발표코드
INOR.P-192 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 19일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Inorganic Chemistry
저자 및
공동저자
YOUNGHUN KIM, MOON-GUN CHOI*
Department of Chemistry, Yonsei University, Korea
In recent, metalla-macrocycles have attracted great attention because of structural diversities depending on the various coordination environments surrounding metal units and multifunctional organic ligands, and its noteworthy host-guest properties. To construct metalla-macrocycles, transition metal based half sandwich fragments (e.g. Ru, Rh, or Ir) are used due to inducing simple synthetic methods and high yields. A mechanochemical reaction, which is induced by kinetic energies from milling or grinding under solvent-free conditions, has become a substitute of pre-existing syntheses in the solution in terms of green chemistry. A mechanochemical reaction usually results higher yields, faster rates of reaction, and preventing toxic wastes from any organic solvents. Especially, a mechanochemical reaction using transition metal based moiety has various applications such as catalytic reactions, mononuclear metal complexes, and multi-dimensional networked compounds (e.g. coordination polymers or metal-organic frameworks). Nevertheless, a study of mechanochemical reactions of multi-nuclear metal complexes is still rare. Our group synthesize binuclear metalla-macrocycles through the cyclometallation by C–H activation of multitopic ligand, 5-(pyridine-3-yloxy)isophthalic acid, and N-donor coordination with half sandwich fragments of [(p-cymene)Ru(OAc)2], [Cp*Ir(OAc)2] and [Cp*Rh(OAc)2]. Binuclear metalla-macrocycles were characterized by 1H NMR, Infrared spectroscopy, and elemental analysis. Consequently, the data was matched similarly with the products prepared by the reaction in the solution. The 3-D crystal structures of binuclear metalla-macrocycles were illustrated by a single crystal X-ray analysis.
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