Summary
Single crystals of LiFe3+(SeO3)2 were prepared by hydrothermal synthesis. The crystal structure of LiFe3+(SeO3)2 is reported: tetragonal, space group I\(\bar 4\)2d,a=10.649(2) Å,c=9.959(2) Å,V=1129.4 Å3,Z=8, 1268 unique reflections,R=0.037. The structure contains LiFeO8 groups, built up by FeO6 octahedra edgesharing with strongly distorted LiO4 tetrahedra. These LiFeO8 groups share corners with trigonal pyramidal SeO3 groups to form a three dimensional network. The mean bondlengths are 1.994 Å, 2.006 Å and 1.699 Å for Li-O, Fe-O and Se(IV)-O, respectively.
Zusammenfassung
Einkristalle von LiFe3+(SeO3)2 wurden auf hydrothermalem Weg dargestellt und ihre Kristallstruktur bestimmt: tetragonal, Raumgruppe I\(\bar 4\)2d,a=10.649(2) Å,c=9.959(2) Å,V=1129.4 Å3,Z=8, 1268 unabhängige Reflexe,R=0.037. Kennzeichnend für die Atomanordnung sind LiFeO8 Gruppen, die aus FeO6 Oktaedern und mit ihnen kantenverknüpften, stark verzerrten LiO4 Tetraedern aufgebaut sind. Diese LiFeO8 Baueinheiten bilden, mit trigonal pyramidalen SeO3 Gruppen über Ecken verbunden, ein dreidimensionales Netzwerk. Die Mittelwerte der Li-O, Fe-O and Se(IV)-O Abstände sind 1.994 Å, 2.006 Å und 1.699 Å.
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Giester, G. Crystal structure of LiFe3+(SeO3)2 . Monatsh Chem 125, 535–538 (1994). https://doi.org/10.1007/BF00811845
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DOI: https://doi.org/10.1007/BF00811845