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

대한화학회 제121회 학술발표회 및 총회 Synthesis, structure, and characterization of two new lithium transition metal selenites, Li6Co(SeO3)4 and Li6Ni(SeO3)4

등록일
2018년 2월 6일 12시 35분 49초
접수번호
4076
발표코드
INOR.P-78 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 19일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Inorganic Chemistry
저자 및
공동저자
Hongil Jo, Kang Min Ok*
Department of Chemistry, Chung-Ang University, Korea

Selenite compounds reveal unique properties such as multiferroicity, selective-ion exchange, and nonlinear optical properties. Previously we reported Li13Mn(SeO3)8 showing dynamic Jahn-Teller distortion. In this research, we have synthesized two novel lithium transition metal selenite compounds, namely, Li6Co(SeO3)4 and Li6Ni(SeO3)4. Isostructural title compounds crystallize in a rhombohedral space group, R-3, and consist of Li+, CoO6 (or NiO6) octahedra, and SeO3 polyhedra forming a three-dimensional distorted cubic lattice. The structure of the materials is closely related to that of Li13Mn(SeO3)8: some of the Li+ cations in Li13Mn(SeO3)8 have been substituted by transition metal cations and the oxidation state of the transition metals has been reduced from +3 to +2. The magnetic measurements indicate that Li6Co(SeO3)4 is a canted antiferromagnet while Li6Ni(SeO3)4 is an antiferromagnet. The antiferromagnetic interaction of the title compounds may be due to anisotropic interactions. Detailed structural description, spectroscopic analysis, and magnetic properties will be presented.


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