The compound described by Co2Sb2O7 crystallizes in the cubic Fd-3m space group. Co(1) is bonded to two equivalent O(2) and six equivalent O(1) atoms to form distorted CoO8 hexagonal bipyramids that share edges with six equivalent Co(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 Co(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 49°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Co(1) and two equivalent Sb(1) atoms to form distorted OCo2Sb2 tetrahedra that share corners with two equivalent O(2)Co4 tetrahedra, corners with twelve equivalent O(1)Co2Sb2 tetrahedra,  an edgeedge with one O(2)Co4 tetrahedra, and edges with four equivalent O(1)Co2Sb2 tetrahedra. In the second O site, O(2) is bonded to four equivalent Co(1) atoms to form OCo4 tetrahedra that share corners with four equivalent O(2)Co4 tetrahedra, corners with twelve equivalent O(1)Co2Sb2 tetrahedra, and edges with six equivalent O(1)Co2Sb2 tetrahedra. is represented by the CIF file [CIF]
data_Co2Sb2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.190
_cell_length_b   7.190
_cell_length_c   7.190
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   262.856
_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
  Co  Co0  1  0.625  0.125  0.125  1.0
  Co  Co1  1  0.125  0.625  0.125  1.0
  Co  Co2  1  0.125  0.125  0.625  1.0
  Co  Co3  1  0.125  0.125  0.125  1.0
  Sb  Sb4  1  0.125  0.625  0.625  1.0
  Sb  Sb5  1  0.625  0.125  0.625  1.0
  Sb  Sb6  1  0.625  0.625  0.125  1.0
  Sb  Sb7  1  0.625  0.625  0.625  1.0
  O  O8  1  0.706  0.706  0.294  1.0
  O  O9  1  0.294  0.294  0.706  1.0
  O  O10  1  0.706  0.294  0.706  1.0
  O  O11  1  0.294  0.706  0.294  1.0
  O  O12  1  0.294  0.706  0.706  1.0
  O  O13  1  0.706  0.294  0.294  1.0
  O  O14  1  0.544  0.544  0.956  1.0
  O  O15  1  0.956  0.956  0.544  1.0
  O  O16  1  0.544  0.956  0.544  1.0
  O  O17  1  0.956  0.544  0.956  1.0
  O  O18  1  0.956  0.544  0.544  1.0
  O  O19  1  0.544  0.956  0.956  1.0
  O  O20  1  0.250  0.250  0.250  1.0
  O  O21  1  0.000  0.000  0.000  1.0
[/CIF]
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The compound described by Co2Sb2O7 crystallizes in the cubic Fd-3m space group. Co(1) is bonded to two equivalent O(2) and six equivalent O(1) atoms to form distorted CoO8 hexagonal bipyramids that share edges with six equivalent Co(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 Co(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 49°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Co(1) and two equivalent Sb(1) atoms to form distorted OCo2Sb2 tetrahedra that share corners with two equivalent O(2)Co4 tetrahedra, corners with twelve equivalent O(1)Co2Sb2 tetrahedra,  an edgeedge with one O(2)Co4 tetrahedra, and edges with four equivalent O(1)Co2Sb2 tetrahedra. In the second O site, O(2) is bonded to four equivalent Co(1) atoms to form OCo4 tetrahedra that share corners with four equivalent O(2)Co4 tetrahedra, corners with twelve equivalent O(1)Co2Sb2 tetrahedra, and edges with six equivalent O(1)Co2Sb2 tetrahedra. is represented by the CIF file [CIF]
data_Co2Sb2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.190
_cell_length_b   7.190
_cell_length_c   7.190
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   262.856
_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
  Co  Co0  1  0.625  0.125  0.125  1.0
  Co  Co1  1  0.125  0.625  0.125  1.0
  Co  Co2  1  0.125  0.125  0.625  1.0
  Co  Co3  1  0.125  0.125  0.125  1.0
  Sb  Sb4  1  0.125  0.625  0.625  1.0
  Sb  Sb5  1  0.625  0.125  0.625  1.0
  Sb  Sb6  1  0.625  0.625  0.125  1.0
  Sb  Sb7  1  0.625  0.625  0.625  1.0
  O  O8  1  0.706  0.706  0.294  1.0
  O  O9  1  0.294  0.294  0.706  1.0
  O  O10  1  0.706  0.294  0.706  1.0
  O  O11  1  0.294  0.706  0.294  1.0
  O  O12  1  0.294  0.706  0.706  1.0
  O  O13  1  0.706  0.294  0.294  1.0
  O  O14  1  0.544  0.544  0.956  1.0
  O  O15  1  0.956  0.956  0.544  1.0
  O  O16  1  0.544  0.956  0.544  1.0
  O  O17  1  0.956  0.544  0.956  1.0
  O  O18  1  0.956  0.544  0.544  1.0
  O  O19  1  0.544  0.956  0.956  1.0
  O  O20  1  0.250  0.250  0.250  1.0
  O  O21  1  0.000  0.000  0.000  1.0
[/CIF]
.