Acta Cryst. (2007). E63, i194  [ doi:10.1107/S1600536807056346 ]

Diholmium(III) trisulfate tetrahydrate

W. Zhou, S. Ding, X. Xu and Y. Xu

Abstract: The single-crystal structure of the title compound {systematic name: poly[tetraaquatri-₂-sulfato-diholmium(III)]}, [Ho₂(SO₄)₃(H₂O)₄]_n, features two-dimensional holmium(III) sulfate layers constructed by eight-coordinate holmium and sulfate groups. The coordination about Ho includes four O atoms from bridging sulfate ions. One S atom makes three S-O-Ho linkages through bridging O atoms, while a second S atom lies on a twofold axis and makes two S-O-Ho linkages. The coordination of each Ho atom is completed by four water molecules, which act as terminal ligands of Ho³⁺.

Online 14 November 2007

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