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Acta Cryst. (2004). E60, i25-i27 [ doi:10.1107/S1600536804001527 ]
Abstract: Single crystals of zinc mercury(II) arsenate(V) hydroxide, ZnHg(AsO4)(OH), were obtained under hydrothermal conditions and structurally characterized using X-ray diffraction. ZnHg(AsO4)(OH) crystallizes isotypically with the mineral descloizite, ZnPb(VO4)(OH). The structure is composed of linear chains of edge-sharing [Zn(OH)2O4] octahedra which are linked by vertices of AsO4 tetrahedra to form an open framework structure. In the channels of this arrangement, Hg atoms are situated, having two short bonds to one O atom of the AsO4 group and to the OH group. Additional stabilization of the structure is accomplished by weak hydrogen bonding.
Online 30 January 2004
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