Preparation, crystal structure, and electrical resistivity of SbRe2O6 with a Re-Re bond

The rhenium compound SbRe2O6 has been prepared by reaction of SbOReO4 · 2H2O with rhenium metal in a sealed silica tube. Its structure was determined by single-crystal X-ray diffraction. Crystal data: monoclinic C2/c, a = 16.048(2) angstrom, b = 4.920(1) angstrom, c = 5.480(2) angstrom, β = 91.90(2)degree, V = 432.4(2) angstrom 3, Z = 4, R (Rw) = 0.028(0.028) for 560 reflections. The structure comprises Re2O6 layers, which are slices of the rutile structure along the 10 bar 1 plane, and antimony atoms connecting the layers. The Re2O6 layers contain pairs of ReO6 octahedra sharing an edge and the Re-Re distance is 2.517(1) angstrom. SbRe2O6 has ordered stacking of Re2O6 layers in the sequence ABAB hor-ellipsis. The electrical resistivity of SbRe2O6 along the bc plane shows metallic behavior (2 microΩ-cm at 5 K and 61 microΩ-cm at 280 K)