Acta Cryst. (2004). E60, i142-i144  [ doi:10.1107/S160053680402608X ]

Dieuropium(III) trisulfate octahydrate: a redetermination at 120 K

T. R. Sarangarajan, K. Panchanatheswaran, J. N. Low and C. Glidewell

Abstract: The title compound, Eu₂(SO₄)₃·8H₂O, crystallizes in space group C2/c, with one of the anions lying on a twofold rotation axis and the other in a general position, and is best formulated as [Eu(H₂O)_4/1(SO₄)_3/3(SO₄)_1/2]₂, where one of the anions lies across a twofold axis. The coordination environment of Eu^III consists of four water molecules and four sulfate ions. All the water molecules and sulfate ions are involved in hydrogen-bonding interactions. The structure is similar to that previously determined at 293 K [Wei & Zheng (2003). Z. Kristallogr. New Cryst. Struct. 218, 277-278], but the cell parameters and the interatomic distances are more precise in the present determination.

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