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Tetrastrontium dimanganese copper nonaoxide, Sr4Mn2CuO9

Abstract : 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.
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Submitted on : Tuesday, October 2, 2012 - 7:05:57 PM
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Ahmed El Abed, Etienne Gaudin, Jacques Darriet. Tetrastrontium dimanganese copper nonaoxide, Sr4Mn2CuO9. Acta Crystallographica Section C: Crystal Structure Communications, International Union of Crystallography, 2002, 58 (10), pp.i138-i140. ⟨10.1107/S0108270102015639⟩. ⟨hal-00737907⟩



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