We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Sodium manganese fluorosulfate with a triplite structure.
- Authors
Barpanda, Prabeer; Ling, Chris D.; Oyama, Gosuke; Yamada, Atsuo
- Abstract
The crystal structure of the NaMnSO4F fluorosulfate phase prepared by low-temperature solid-state synthesis has been solved and refined by the Rietveld analysis of synchrotron X-ray powder diffraction data. Isostructural to the naturally occurring triplite family of minerals, this compound crystallizes in monoclinic C2/ c symmetry (No. 15) with unit-cell parameters of a = 13.77027 (17), b = 6.63687 (8), c = 10.35113 (14) Å, β = 121.4795 (3)° and V = 806.78 (2) Å3. Its structure is built of edge-sharing chains of distorted MO4F2 octahedra, which are interconnected by constituent SO4 tetrahedra to form a robust three-dimensional polyanionic framework. MO4F2 octahedra are randomly occupied by Na and Mn with close to 1:1 occupancy. This random mixing of cations among polyhedral building blocks means that there are no channels for Na-ion conduction, rendering it electrochemically inactive. The structure is discussed and compared with other known alkali metal fluorosulfates as well as to naturally occurring triplite-type minerals.
- Subjects
FLUOROSULFATES; X-ray diffraction; POLYHEDRAL functions; CONDUCTION bands; ALKALI metal compounds
- Publication
Acta Crystallographica Section B: Structural Science, Crystal Engineering & Materials, 2013, Vol 69, Issue 6, p584
- ISSN
2052-5192
- Publication type
Article
- DOI
10.1107/S2052519213024093