The material structure described by Hg2Sb2O7 crystallizes in the cubic Fd-3m space group. Hg(1) is bonded to two equivalent O(2) and six equivalent O(1) atoms to form distorted HgO8 hexagonal bipyramids that share edges with six equivalent Hg(1)O8 hexagonal bipyramids and edges with six equivalent Sb(1)O6 octahedra. Sb(1) is bonded to six equivalent O(1) atoms to form SbO6 octahedra that share corners with six equivalent Sb(1)O6 octahedra and edges with six equivalent Hg(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 43°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Hg(1) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded to four equivalent Hg(1) atoms to form corner-sharing OHg4 tetrahedra. is represented by the CIF card [CIF]
data_Hg2Sb2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.359
_cell_length_b   7.359
_cell_length_c   7.359
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   281.749
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Hg  Hg0  1  0.625  0.625  0.625  1.0
  Hg  Hg1  1  0.625  0.125  0.625  1.0
  Hg  Hg2  1  0.625  0.625  0.125  1.0
  Hg  Hg3  1  0.125  0.625  0.625  1.0
  Sb  Sb4  1  0.125  0.625  0.125  1.0
  Sb  Sb5  1  0.125  0.125  0.125  1.0
  Sb  Sb6  1  0.125  0.125  0.625  1.0
  Sb  Sb7  1  0.625  0.125  0.125  1.0
  O  O8  1  0.805  0.805  0.195  1.0
  O  O9  1  0.805  0.195  0.805  1.0
  O  O10  1  0.055  0.055  0.445  1.0
  O  O11  1  0.805  0.195  0.195  1.0
  O  O12  1  0.445  0.445  0.055  1.0
  O  O13  1  0.055  0.445  0.055  1.0
  O  O14  1  0.195  0.805  0.805  1.0
  O  O15  1  0.445  0.055  0.445  1.0
  O  O16  1  0.500  0.500  0.500  1.0
  O  O17  1  0.195  0.805  0.195  1.0
  O  O18  1  0.195  0.195  0.805  1.0
  O  O19  1  0.750  0.750  0.750  1.0
  O  O20  1  0.445  0.055  0.055  1.0
  O  O21  1  0.055  0.445  0.445  1.0
[/CIF]
.
The material structure described by Hg2Sb2O7 crystallizes in the cubic Fd-3m space group. Hg(1) is bonded to two equivalent O(2) and six equivalent O(1) atoms to form distorted HgO8 hexagonal bipyramids that share edges with six equivalent Hg(1)O8 hexagonal bipyramids and edges with six equivalent Sb(1)O6 octahedra. Sb(1) is bonded to six equivalent O(1) atoms to form SbO6 octahedra that share corners with six equivalent Sb(1)O6 octahedra and edges with six equivalent Hg(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 43°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Hg(1) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded to four equivalent Hg(1) atoms to form corner-sharing OHg4 tetrahedra. is represented by the CIF card [CIF]
data_Hg2Sb2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.359
_cell_length_b   7.359
_cell_length_c   7.359
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   281.749
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Hg  Hg0  1  0.625  0.625  0.625  1.0
  Hg  Hg1  1  0.625  0.125  0.625  1.0
  Hg  Hg2  1  0.625  0.625  0.125  1.0
  Hg  Hg3  1  0.125  0.625  0.625  1.0
  Sb  Sb4  1  0.125  0.625  0.125  1.0
  Sb  Sb5  1  0.125  0.125  0.125  1.0
  Sb  Sb6  1  0.125  0.125  0.625  1.0
  Sb  Sb7  1  0.625  0.125  0.125  1.0
  O  O8  1  0.805  0.805  0.195  1.0
  O  O9  1  0.805  0.195  0.805  1.0
  O  O10  1  0.055  0.055  0.445  1.0
  O  O11  1  0.805  0.195  0.195  1.0
  O  O12  1  0.445  0.445  0.055  1.0
  O  O13  1  0.055  0.445  0.055  1.0
  O  O14  1  0.195  0.805  0.805  1.0
  O  O15  1  0.445  0.055  0.445  1.0
  O  O16  1  0.500  0.500  0.500  1.0
  O  O17  1  0.195  0.805  0.195  1.0
  O  O18  1  0.195  0.195  0.805  1.0
  O  O19  1  0.750  0.750  0.750  1.0
  O  O20  1  0.445  0.055  0.055  1.0
  O  O21  1  0.055  0.445  0.445  1.0
[/CIF]
.