Crystal structures of M2FeO4 (M = K, Rb, Cs)

doi:10.1016/0022-4596(73)90019-4

Journal of Solid State Chemistry

Volume 8, Issue 1, September 1973, Pages 43-49

https://doi.org/10.1016/0022-4596(73)90019-4 Get rights and content

Abstract

The crystal structure of K₂FeO₄, which is isomorphous with β-K₂SO₄, K₂MnO₄ and K₂CrO₄, has been determined in detail. In addition, Rb₂FeO₄ and Cs₂FeO₄ are shown to be of the same structural type. Crystals of K₂FeO₄ are orthorhombic, space group Pnma, a = 7.694(5), b = 5.858(7), c = 10.335(7) with Z = 4. The integrated intensities of 1174 independent reflections were measured with an automated diffractometer and refined to a weighted least-squares residue of 0.046. The average tetrahedral [FeO] bond length, corrected for libration effects, is 1.656(6) Å which is equal within experimental error to values observed for [CrO] and [MnO] tetrahedral bonds.

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Crystal structures of M2FeO4 (M = K, Rb, Cs)

Abstract

J. Solid State Chem.

Z. Anorg. Allgem. Chem.

Z. Anorg. Allgem. Chem.

Inorg. Chem.

Z. Kristallogr.

Z. Kristallogr.

J. Chem. Soc.

Acta Crystallogr.

Z. Kristallogr.

Acta Crystallogr.

Crystal structures of M₂FeO₄ (M = K, Rb, Cs)