HgWO(4) synthesized at high pressure and temperature.
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.
Asberg Dahlborg
Magnus B
MB
Inorganic Chemistry, Chalmers University of Technology, SE-412 96 Göteborg, Sweden. magnusad@inoc.chalmers.se
Svensson
Göran
G