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A New Lithium‐Rich Zeolitic 10‐MR Zincolithosilicate MZS‐1 Hydrothermally Synthesized under High Pressure and Characterized by 3D Electron Diffraction
Author(s) -
Steciuk Gwladys,
Schäf Oliver,
Tortet Laurence,
Pizzala Hélène,
Palatinus Lukáš,
Hornfeck Wolfgang,
Paillaud JeanLouis
Publication year - 2021
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000939
Subject(s) - crystallography , rietveld refinement , electron diffraction , lattice constant , crystallite , lithium (medication) , materials science , microcrystalline , powder diffraction , crystal structure , diffraction , orthorhombic crystal system , ambient pressure , dilithium , chemistry , thermodynamics , physics , organic chemistry , medicine , ion , deprotonation , optics , endocrinology
We report the structure of a new high lithium content zincolithosilicate (MZS‐1) obtained after hydrothermal treatment under high pressure from a glass precursor. After synthesis microcrystalline mixture of phases was obtained among which the main phase was unknown. Due to the sub micrometric size of the crystallites its structure was determined from precession‐assisted 3D electron diffraction measured at 100 K and refined using the dynamical theory of diffraction. More accurate lattice parameters are obtained from Rietveld refinement of synchrotron powder data collected at the ambient temperature. The characteristic framework is described at the ambient temperature using an average unit cell a 0 =8.57999(5) Å, b 0 =14.12332(8) Å, c 0 =4.96827(3) Å in the space group Ccc 2. The structure of the new zeolitic 10‐membered ring zincosilicate with chemical formula per unit cell (SiO 2 ) 2 Zn 0.408 LiO(OH) 2 (Li,H) 2.184 ( Z =4) is composed of undulated silicate layers made of fused 6‐membered rings connected via vertices of (Zn,Li)O 4 tetrahedra. A weak superstructure doubling the a 0 parameter is observed and is explained by a Zn/Li ordering within the (Zn,Li)O 4 layers.