Single Crystal X-ray Diffraction Study of a Pure Natrolite Sample |
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Authors: | Francesco Capitelli Mehabaw G. Derebe |
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Affiliation: | (1) Institute of Crystallography, CNR, v. Amendola 122/o, Bari, 70126, Italy;(2) Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia |
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Abstract: | The crystal structure of a pure natrolite sample, Na2(Al2Si3O10)·2H2O, coming from Asheken, Ethiopia, has been analysed by single crystal X-ray diffraction. It crystallizes within the orthorhombic space group Fdd2, with the following cell constants: a = 18.2930(2) Å; b = 18.6430(5) Å; c = 6.5860(5) Å; V = 2246.07(18) Å3. The three-dimensional framework of this hydrated aluminosilicate zeolite is made up by chains of corner-sharing SiO4 and AlO4 tetrahedra down c; the chains are held together by sharing the external vertices of tetrahedra; water molecules and Na+ extra-framework cations fill up the resulting cavities, the latter forming irregular NaO6 octahedra. Hydrogen bonds complete the array. |
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Keywords: | Natrolite Single crystal X-ray diffraction Crystal packing |
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