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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis and Characterizations of a New Mixed-Metallic Phosphate, Na3.7V1.8Ta6.2P6O35

등록일
2012년 2월 16일 17시 10분 32초
접수번호
1260
발표코드
MAT.P-1176 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
이승수, 윤호섭1
나노정보융합기술연구소/아주대학교, Korea
1아주대학교 화학과, Korea
The new single-crystalline mixed metallic phosphate, Na16xV8xTa8-8xP6O35 (x= 0.23), has been prepared with the use of the metal halide, NaCl as a reactive flux. This compound has been structurally characterized by single-crystal X-ray diffraction techniques. The title compound crystallize in the space group Pbam of the orthorhombic system with unit cell parameters a = 8.4686(2) ?, b = 15.3354(5) ?, c = 10.3962(3) ?, V = 1350.15(7) ?3 and Z = 2. The framework consists of [Ta3P2O17] layers and they are linked via corner-sharing TaO6 octahedra to form the [Ta6P4O31] bilayer. These bilayers are linked along the crystallographic c axis through [Ta2P2O4] units, which is built up from the two edge-sharing TaO6 octahedra connected to the two PO4 tetrahedra. There are three and two crystallographically independent metal and Li sites, respectively exist in the title compound. Metal 1 and 3 sites are fully occupied by Ta5+ ions, whereas the metal 2 site is occupied by statistically disordered V3+/Ta5+ ions. The Li1 site is fully occupied but the Li2 site is partially occupied for charge neutrality. The classical charge valence of the title compound can be represented by [Na+]3.7[V3+]1.8[Ta5+]6.2[P5+]6[O2-]35.

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