Acta Cryst. (2005). E61, i105-i107  [ doi:10.1107/S1600536805014078 ]

CoZn₂(PO₄)₂·4H₂O, a cobalt-doped modification of hopeite

W.-Y. Wu, X.-Q. Liang and Y.-Z. Li

Abstract: Purple crystals of the title compound, cobalt dizinc phosphate tetrahydrate, have been prepared hydrothermally. It is isostructural with hopeite, Zn₃(PO₄)₂·4H₂O, with cobalt completely substituted for zinc at the octahedral site, resulting in [ZnPO₄]^- layers bridged by cis Co(H₂O)₄O₂ octahedra. Various O-HO hydrogen bonds help to stabilize the structure. The Co atom and two water O atoms occupy special positions with mirror symmetry,

Online 21 May 2005

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