Über ein neues Oxoferrat mit „Butterfly-Motiv”︁: K2Na4[Fe2O5] |
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Authors: | A Mller R Hoppe |
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Institution: | A. Möller,R. Hoppe |
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Abstract: | A New Oxoferrate with “Butterfly-Motiv”: K2Na4Fe2O5] Dark red-brown single-crystals of K2Na4Fe2O5] were obtained for the first time by heating “K3Na3CdO4” at 500°C in closed Fe-cylinders. Determination and refinement of the crystal structure confirms the space group P42/mnm (No. 136). Four-circle diffractometer data: MoKα , 373 out of 373 Io(hkl); R = 5.3%; Rw = 4.6%; a = 645.94(5), c = 1 039.2(1) pm. In contrast to the already known oxoferrates(II) with the “Butterfly-Motiv”, Rb6Fe2O5] and K6Fe2O5] 1], we now found an isotypic structure for K2Na4Fe2O5] with the oxocobaltates of Rb2Na4Co2O5] and K2Na4Co2O5] 2]. |
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Keywords: | New oxide of divalent iron structure MAPLE CHARDI VADI |
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