Tetrastrontium dimanganese copper nonaoxide, Sr4Mn2CuO9

Ahmed El Abed (1) , Etienne Gaudin (1) , Jacques Darriet (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

Single crystals of Sr(4)Mn(2.09)Cu(0.91)O(9) have been grown by flux synthesis and the structure, closely related to the hexagonal perovskite 2H, was solved from single-crystal X-ray data in space group P321. The structure of Sr(4)Mn(2)CuO(9) is composed of chains of face-sharing polyhedra with a sequence of two octahedra and one trigonal prism. The octahedra are filled by Mn atoms and the Cu atoms are randomly distributed at the centres of the square faces of the trigonal prism. A stacking fault is observed within one of the two chains, which can be attributed to a shifting of the chain along the c axis.

Mots clés: Crystal structure; Inorganic compounds

Domaines: Matériaux

Ahmed El Abed, Etienne Gaudin, Jacques Darriet. Tetrastrontium dimanganese copper nonaoxide, Sr4Mn2CuO9. Acta Crystallographica Section C : Crystal Structure Communications [1968-2013], 2002, 58 (10), pp.i138-i140. ⟨10.1107/S0108270102015639⟩. ⟨hal-00737907⟩