Acta Cryst. (2004). E60, i84-i85  [ doi:10.1107/S160053680401373X ]

NH₄Fe^IIH(SO₄)₂·2H₂O

F. Heinicke, H.-W. Lerner and M. Bolte

Abstract: The structure of the title compound, ammonium iron(II) hydrogen bis(sulfate) dihydrate, NH₄FeH(SO₄)₂·2H₂O, is isotypic with three similar kröhnkite-type structures of type E. The Fe²⁺ cation is surrounded by two water molecules and four partially protonated sulfate anions. The structure is completed by ammonium ions. The Fe and the N atom are located on centres of inversion.

Online 12 June 2004

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