Structure of a cyclohexane sorption complex of partially dehydrated, fully Mn2+-exchanged zeolite Y (FAU, Si/Al = 1.56)
| Autor: | Woo Taik Lim, Hae-Kwon Jeong, Karl Seff, Dae Jun Moon |
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| Rok vydání: | 2018 |
| Předmět: |
Diffraction
Cyclohexane Hydrogen Hydrogen bond chemistry.chemical_element Sorption 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Ion chemistry.chemical_compound Crystallography chemistry Mechanics of Materials Molecule General Materials Science 0210 nano-technology Zeolite |
| Zdroj: | Microporous and Mesoporous Materials. 264:139-146 |
| ISSN: | 1387-1811 |
| DOI: | 10.1016/j.micromeso.2018.01.016 |
| Popis: | The structure of a cyclohexane sorption complex of partially dehydrated, fully Mn2+-exchanged zeolite Y has been determined at 100(1) K by single-crystal synchrotron X-ray diffraction techniques. It was refined using all intensities to the final error indices R1 = 0.052 and wR2 = 0.174. Cyclohexane molecules of symmetry 3 ¯ 2/m (D3d, chair form) occupy 5.7 of the 16 12-rings per unit cell. Each cyclohexane molecule is held in place by 18 weak hydrogen bonds between its six equatorial hydrogen atoms and all 12 oxygen atoms of its 12-ring: C⋯O ca. 3.85 A. Mn2+ ions are found at four crystallographic sites, I, I′, II′, and II. Each of the 17.7(2) Mn2+ ions per unit cell at site II (opposite 6-rings in the supercage) coordinates tetrahedrally to three framework oxygen atoms and a water molecule. The cyclohexane molecules interact neither with the Mn2+ ions nor with the water molecules. |
| Databáze: | OpenAIRE |
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