Synthesis, crystal structure and lithium ion conductivity of LiMgFSO4

Sebastian, Litty ; Gopalakrishnan, Jagannatha ; Piffard, Yves (2002) Synthesis, crystal structure and lithium ion conductivity of LiMgFSO4 Journal of Materials Chemistry, 2002 (2). pp. 374-377. ISSN 0959-9428

Full text not available from this repository.

Official URL:

Related URL:


Lithium magnesium fluoride sulfate, LiMgFSO4, has been prepared by reaction of MgSO4·H2O, Li2CO3 and NH4F at 450-500°C. It crystallizes in space group P of the triclinic system, with Z = 2 and a = 5.1623(7), b = 5.388(1), c = 7.073(1) Å, α = 106.68(1), β = 107.40(1) and γ = 97.50(1)°. The structure is built up from single chains of corner-sharing MgO4F2 octahedra running parallel to the c axis, cross linked via vertex-sharing SO4 tetrahedra, so that each tetrahedron links three different chains. Li resides within the cavities defined by the framework, wherein it is disordered between two half-occupied sites. This structure is isotypic with that of all members of the amblygonite (LiAlFPO4)-montebrasite (LiAlOHPO4) series, and that of tavorite (LiFeOHPO4). It is topologically identical to the titanite (CaTiOSiO4) and kieserite (MgSO4·H2O) structures. The framework structure of LiMgFSO4 facilitates lithium ion conduction [s (520°C) = 1.5 × 10-3 S cm-1; Ea = 0.94 eV].

Item Type:Article
Source:Copyright of this article belongs to Royal Society of Chemistry.
ID Code:84294
Deposited On:24 Feb 2012 15:34
Last Modified:24 Feb 2012 15:34

Repository Staff Only: item control page