Acta Cryst. (2007). E63, m140-m142  [ doi:10.1107/S1600536806051750 ]

Pentakis(ethane-1,2-diammonium) aquapentasulfato-³O;⁴O,O'-zirconate(IV) diaquatetrasulfato-²O;⁴O,O'-zirconate(IV)

Z.-W. Xu, Y.-L. Fu, S.-Q. Teng and S. W. Ng

Abstract: The two independent Zr atoms in the asymmetric unit of the title structure, (C₂H₁₀N₂)₅[Zr(SO₄)₅(H₂O)][Zr(SO₄)₄(H₂O)₂], are both eight-coordinate. In the docedahedral aquapentasulfatozirconate(IV) hexaanion, three of the sulfate groups are monodentate, whereas the other two chelate to the metal atom. In the square-antiprismatic diaquatetrasulfatozirconate(IV) tetraanion, two of the sulfate groups are monodentate and two are bidentate. Two of the five 1,2-ethanediammonium cations lie about crystallographic centres of inversion. The cations and anions are linked into a three-dimensional network architecture by hydrogen bonds.

Online 8 December 2006

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