Zur Kenntnis eines Barium-Lanthanoid-Oxomanganats(IV, V): Ba3ErMn2O9 / On a Barium Rare-Earth Oxomanganate(IV, V): Ba3ErMn2O9
1994 ◽
Vol 49
(9)
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pp. 1277-1281
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Keyword(s):
High temperature reactions of BaCO3/MnO/Er2O3 (3:1:1) led to single crystals of Ba3ErMn2O9. The product shows the structure of the hexagonal precious metal oxides Ba3LnRu2O9, but crystallizes with orthorhombic symmetry, space group C122v-Cmc21, a = 5.823 Å, b - 10.099 Å, c = 14.409 Å; Z = 4. The crystal structure is characterized by ErO6 octahedra, Mn2O9 face shared double octahedra and Ba2+ within cuboctahedral and anticuboctahedral coordination by O2-, respectively. In contrast to precious metal oxides the Mn-Mn distances inside the Mn2O9 double octahedra are elongated
1997 ◽
Vol 52
(8)
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pp. 989-993
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1995 ◽
Vol 50
(8)
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pp. 1146-1150
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1997 ◽
Vol 52
(4)
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pp. 449-452
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Keyword(s):
1995 ◽
Vol 50
(11)
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pp. 1653-1657
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