지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
The crystal structure of Tl_(71)-Y(Tl_(71)Si₁₂₁Al_(71)O_(384)), α=24.706(3) Å, dehydrated at 653 K and 8×10^(-6) torr, has been determined by single-crystal X-ray diffraction techniques in the cubic space group Fd3m at 294(1)K. The structure was refined using all intensities to the final error indices (using only the 302 reflection for which F。>4σ(F。)) R₁=0.0602 (based on F) and Rw=0.1744 (based on F₂). The 71 Tl+ ions per unit cell are found at four crystallographically distinct positions. Site I' position in the sodalite cavity opposite D6Rs are each occupied by eighteen Tl+ ions per unit cell; these Tl+ ions are recessed ca. 1.45 Å into the sodalite cavity from their O(3) plane (Tl-O=2.701(15), 3.163(16) Å and O-Tl-O=92.1(4)˚). The 23 T1+ ions fill site Ⅱ in the supercage; these T1+ ions are recessed ca. 1.58 Å into the supercage from their O(2) plane (Tl-O= 2.850(16), 3.156(16) Å and O-T1-O = 85.1(5)˚). The 19 Tl+ ions lie at site Ⅲ' in the supercage near a triple 4-ring (Tl-O = 3.10(7), 3.39(5) Å and O-Tl-O = 47.8(9), 95.3(18)˚) and the remaining Ⅱ ions occupy another site Ⅲ' near a triple 4-ring in the supercage (Tl-O = 2.81(4), 2.71(4) Å and O-Tl-O = 57.3(8)˚).
목차
Abstract
1. Introduction
2. Experimental Section
3. Results and Discussion
Acknowledgement
Supplementary Material Available
References
참고문헌 (22)
참고문헌 신청
D. W. Breck, Zeolite Molecular Sieves; John Wiley & Son: New York, pp 92-107, 1973.
L. Zhu and K. Seff, J. Phys. Chem B, 103, 9512-9518(1999).
Y. H. Yeom, Y. Kim, and K. Seff, J. Phys. Chem., 100, 8373-8377(1996) and reference therein.
S. B. Jang and Y. Kim, Bull. Korean Chem. Soc., 16(6), 539-542(1995).
D. H. Olson, J. Phys. Chem., 74(14), 2758-2764(1970).
L. Zhu and K. Seff, J. Phys. Chem B, 103, 9512-9518(1999).
Y. H. Yeom, Y. Kim, and K. Seff, J. Phys. Chem., 100, 8373-8377(1996) and reference therein.
S. B. Jang and Y. Kim, Bull. Korean Chem. Soc., 16(6), 539-542(1995).
D. H. Olson, J. Phys. Chem., 74(14), 2758-2764(1970).
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