HgWO(4) synthesized at high pressure and temperature

Magnus B Asberg Dahlborg¹, Göran Svensson

¹Inorganic Chemistry, Chalmers University of Technology, SE-412 96 Göteborg, Sweden. magnusad@inoc.chalmers.se

Acta Crystallographica. Section C, Crystal Structure Communications

|March 1, 2002

Abstract:

Crystals of mercury(II) tungstate(VI), HgWO(4), were grown in sealed gold tubes under an Ar atmosphere at 300 MPa and 973 K. The monoclinic crystal structure (C2/c) of HgWO(4) consists of zigzag chains of edge-sharing WO(6) octahedra running along the c axis and layers of very distorted corner-sharing HgO(6) octahedra in the bc plane. The Hg atom lies on an inversion centre and the W atom is on a twofold axis. No structural effects which can be ascribed to the high pressure used in the synthesis were found.

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