Structural Chemistry of a New 10H Hexagonal Perovskite: BaMn0.4Fe0.6O2.73.

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2007 Structure D 2000 Structural Chemistry of a New 10H Hexagonal Perovskite: BaMn0.4Fe0.6O2.73. The title compound is synthesized from a stoichiometric mixture of BaCO 3 , MnCO 3 , and Fe2O3 (1200 °C, 1 d) and characterized by powder XRD, SAED, and HREM. BaMn0.4Fe0.6O2.73 crystallizes in the space group P63/mmc. The structure is closely related to the ideal 10H polytype with two oxygen-deficient hexagonal BaO2-y layers per unit formula. The framework contains blocks of three face-sharing octahedra linked by corners to two corner-sharing tetrahedra. — (MIRANDA, L.; RAMIREZ-CASTELLANOS, J.; HERNANDO, M.; VARELA, A.; GONZALEZ-CALBET, J. M.; PARRAS*, M.; Eur. J. Inorg. Chem. 2007, 15, 2129-2135; Dep. Quim. Inorg., Fac. Quim., Univ. Complutense, E-28040 Madrid, Spain; Eng.) — W. Pewestorf 31- 006

Transcript of Structural Chemistry of a New 10H Hexagonal Perovskite: BaMn0.4Fe0.6O2.73.

2007

StructureD 2000 Structural Chemistry of a New 10H Hexagonal Perovskite: BaMn0.4Fe0.6O2.73. —

The title compound is synthesized from a stoichiometric mixture of BaCO3, MnCO3, and Fe2O3 (1200 °C, 1 d) and characterized by powder XRD, SAED, and HREM. BaMn0.4Fe0.6O2.73 crystallizes in the space group P63/mmc. The structure is closelyrelated to the ideal 10H polytype with two oxygen-deficient hexagonal BaO2-y layers per unit formula. The framework contains blocks of three face-sharing octahedra linked by corners to two corner-sharing tetrahedra. — (MIRANDA, L.; RAMIREZ-CASTELLANOS, J.; HERNANDO, M.; VARELA, A.; GONZALEZ-CALBET, J. M.; PARRAS*, M.; Eur. J. Inorg. Chem. 2007, 15, 2129-2135; Dep. Quim. Inorg., Fac. Quim., Univ. Complutense, E-28040 Madrid, Spain; Eng.) — W. Pewestorf

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