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Title: Structural Disorder of a New Zeolite-like Lithosilicate, K2.6Li5.4[Li4Si16O38]4.3H2O

Abstract

The framework structure of the synthetic microporous lithosilicate RUB-30 (K{sub 2.6}Li{sub 5.4}[Li{sub 4}Si{sub 16}O{sub 38}]{sub 4.3}H{sub 2}O) is similar to that of the fibrous zeolites such as natrolite, edingtonite and thomsonite, since all their frameworks include the same secondary structural building unit, the so-called 4-1 T{sub 5}O{sub 10} cluster of tetrahedra. Unique to the structure of RUB-30, each 4-1 unit consists of a LiSi4O10 moiety within which the single [LiO4] tetrahedron is strictly segregated from the other four [SiO4] tetrahedra. The connection of neighboring 4-1 units through edge-sharing [LiO4] tetrahedra results in a new framework topology. The present work reports an 'average' structure of RUB-30 solved by synchrotron X-ray single-crystal diffraction data collected at a second-generation source. A superstructure with a x 2b x c (relative to the subcell quoted above) could be seen in X-ray diffraction data collected with better resolution and higher brightness at a third generation source. Diffuse streaks along k with l = odd and unusual superstructure hkl reflections, with k = odd and l = odd only, indicate a more complicated real structure of the material. To explain this observation we propose two different structure types which are statistically, but coherently, intergrown in RUB-30.

Authors:
; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
913995
Report Number(s):
BNL-78563-2007-JA
Journal ID: ISSN 0567-7408; ACBCAR; TRN: US0801459
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Acta Cryst. B
Additional Journal Information:
Journal Volume: 62; Journal ID: ISSN 0567-7408
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BRIGHTNESS; DIFFRACTION; RESOLUTION; SYNCHROTRONS; TOPOLOGY; X-RAY DIFFRACTION; ZEOLITES; NSLS; national synchrotron light source

Citation Formats

Park, S, Boysen, H, and Parise, J. Structural Disorder of a New Zeolite-like Lithosilicate, K2.6Li5.4[Li4Si16O38]4.3H2O. United States: N. p., 2006. Web. doi:10.1107/S0108768105038784.
Park, S, Boysen, H, & Parise, J. Structural Disorder of a New Zeolite-like Lithosilicate, K2.6Li5.4[Li4Si16O38]4.3H2O. United States. https://doi.org/10.1107/S0108768105038784
Park, S, Boysen, H, and Parise, J. 2006. "Structural Disorder of a New Zeolite-like Lithosilicate, K2.6Li5.4[Li4Si16O38]4.3H2O". United States. https://doi.org/10.1107/S0108768105038784.
@article{osti_913995,
title = {Structural Disorder of a New Zeolite-like Lithosilicate, K2.6Li5.4[Li4Si16O38]4.3H2O},
author = {Park, S and Boysen, H and Parise, J},
abstractNote = {The framework structure of the synthetic microporous lithosilicate RUB-30 (K{sub 2.6}Li{sub 5.4}[Li{sub 4}Si{sub 16}O{sub 38}]{sub 4.3}H{sub 2}O) is similar to that of the fibrous zeolites such as natrolite, edingtonite and thomsonite, since all their frameworks include the same secondary structural building unit, the so-called 4-1 T{sub 5}O{sub 10} cluster of tetrahedra. Unique to the structure of RUB-30, each 4-1 unit consists of a LiSi4O10 moiety within which the single [LiO4] tetrahedron is strictly segregated from the other four [SiO4] tetrahedra. The connection of neighboring 4-1 units through edge-sharing [LiO4] tetrahedra results in a new framework topology. The present work reports an 'average' structure of RUB-30 solved by synchrotron X-ray single-crystal diffraction data collected at a second-generation source. A superstructure with a x 2b x c (relative to the subcell quoted above) could be seen in X-ray diffraction data collected with better resolution and higher brightness at a third generation source. Diffuse streaks along k with l = odd and unusual superstructure hkl reflections, with k = odd and l = odd only, indicate a more complicated real structure of the material. To explain this observation we propose two different structure types which are statistically, but coherently, intergrown in RUB-30.},
doi = {10.1107/S0108768105038784},
url = {https://www.osti.gov/biblio/913995}, journal = {Acta Cryst. B},
issn = {0567-7408},
number = ,
volume = 62,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}