The compound described by Na2Sb3O8 crystallizes in the cubic P4_332 space group. Na(1) is bonded to one O(2) and three equivalent O(1) atoms to form NaO4 tetrahedra that share corners with nine equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-60°. Sb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SbO6 octahedra that share corners with six equivalent Na(1)O4 tetrahedra and edges with four equivalent Sb(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Na(1) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded to one Na(1) and three equivalent Sb(1) atoms to form distorted corner-sharing ONaSb3 tetrahedra. is represented by the CIF file [CIF]
data_Na2Sb3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.303
_cell_length_b   9.303
_cell_length_c   9.303
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   805.139
_cell_formula_units_Z   4
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
  Na  Na0  1  0.508  0.508  0.508  1.0
  Na  Na1  1  0.492  0.008  0.992  1.0
  Na  Na2  1  0.742  0.742  0.742  1.0
  Na  Na3  1  0.758  0.258  0.242  1.0
  Na  Na4  1  0.992  0.492  0.008  1.0
  Na  Na5  1  0.008  0.992  0.492  1.0
  Na  Na6  1  0.242  0.758  0.258  1.0
  Na  Na7  1  0.258  0.242  0.758  1.0
  Sb  Sb8  1  0.619  0.631  0.125  1.0
  Sb  Sb9  1  0.631  0.125  0.619  1.0
  Sb  Sb10  1  0.625  0.881  0.369  1.0
  Sb  Sb11  1  0.869  0.875  0.119  1.0
  Sb  Sb12  1  0.875  0.119  0.869  1.0
  Sb  Sb13  1  0.881  0.369  0.625  1.0
  Sb  Sb14  1  0.125  0.619  0.631  1.0
  Sb  Sb15  1  0.119  0.869  0.875  1.0
  Sb  Sb16  1  0.131  0.375  0.381  1.0
  Sb  Sb17  1  0.369  0.625  0.881  1.0
  Sb  Sb18  1  0.381  0.131  0.375  1.0
  Sb  Sb19  1  0.375  0.381  0.131  1.0
  O  O20  1  0.582  0.646  0.907  1.0
  O  O21  1  0.646  0.907  0.582  1.0
  O  O22  1  0.604  0.668  0.343  1.0
  O  O23  1  0.668  0.343  0.604  1.0
  O  O24  1  0.637  0.863  0.137  1.0
  O  O25  1  0.657  0.104  0.832  1.0
  O  O26  1  0.593  0.418  0.146  1.0
  O  O27  1  0.613  0.113  0.387  1.0
  O  O28  1  0.907  0.582  0.646  1.0
  O  O29  1  0.832  0.657  0.104  1.0
  O  O30  1  0.887  0.887  0.887  1.0
  O  O31  1  0.843  0.896  0.332  1.0
  O  O32  1  0.863  0.137  0.637  1.0
  O  O33  1  0.896  0.332  0.843  1.0
  O  O34  1  0.854  0.093  0.082  1.0
  O  O35  1  0.918  0.354  0.407  1.0
  O  O36  1  0.137  0.637  0.863  1.0
  O  O37  1  0.104  0.832  0.657  1.0
  O  O38  1  0.082  0.854  0.093  1.0
  O  O39  1  0.093  0.082  0.854  1.0
  O  O40  1  0.146  0.593  0.418  1.0
  O  O41  1  0.168  0.157  0.396  1.0
  O  O42  1  0.113  0.387  0.613  1.0
  O  O43  1  0.157  0.396  0.168  1.0
  O  O44  1  0.343  0.604  0.668  1.0
  O  O45  1  0.387  0.613  0.113  1.0
  O  O46  1  0.332  0.843  0.896  1.0
  O  O47  1  0.418  0.146  0.593  1.0
  O  O48  1  0.396  0.168  0.157  1.0
  O  O49  1  0.407  0.918  0.354  1.0
  O  O50  1  0.354  0.407  0.918  1.0
  O  O51  1  0.363  0.363  0.363  1.0
[/CIF]
.
The compound described by Na2Sb3O8 crystallizes in the cubic P4_332 space group. Na(1) is bonded to one O(2) and three equivalent O(1) atoms to form NaO4 tetrahedra that share corners with nine equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-60°. Sb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SbO6 octahedra that share corners with six equivalent Na(1)O4 tetrahedra and edges with four equivalent Sb(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Na(1) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded to one Na(1) and three equivalent Sb(1) atoms to form distorted corner-sharing ONaSb3 tetrahedra. is represented by the CIF file [CIF]
data_Na2Sb3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.303
_cell_length_b   9.303
_cell_length_c   9.303
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   805.139
_cell_formula_units_Z   4
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
  Na  Na0  1  0.508  0.508  0.508  1.0
  Na  Na1  1  0.492  0.008  0.992  1.0
  Na  Na2  1  0.742  0.742  0.742  1.0
  Na  Na3  1  0.758  0.258  0.242  1.0
  Na  Na4  1  0.992  0.492  0.008  1.0
  Na  Na5  1  0.008  0.992  0.492  1.0
  Na  Na6  1  0.242  0.758  0.258  1.0
  Na  Na7  1  0.258  0.242  0.758  1.0
  Sb  Sb8  1  0.619  0.631  0.125  1.0
  Sb  Sb9  1  0.631  0.125  0.619  1.0
  Sb  Sb10  1  0.625  0.881  0.369  1.0
  Sb  Sb11  1  0.869  0.875  0.119  1.0
  Sb  Sb12  1  0.875  0.119  0.869  1.0
  Sb  Sb13  1  0.881  0.369  0.625  1.0
  Sb  Sb14  1  0.125  0.619  0.631  1.0
  Sb  Sb15  1  0.119  0.869  0.875  1.0
  Sb  Sb16  1  0.131  0.375  0.381  1.0
  Sb  Sb17  1  0.369  0.625  0.881  1.0
  Sb  Sb18  1  0.381  0.131  0.375  1.0
  Sb  Sb19  1  0.375  0.381  0.131  1.0
  O  O20  1  0.582  0.646  0.907  1.0
  O  O21  1  0.646  0.907  0.582  1.0
  O  O22  1  0.604  0.668  0.343  1.0
  O  O23  1  0.668  0.343  0.604  1.0
  O  O24  1  0.637  0.863  0.137  1.0
  O  O25  1  0.657  0.104  0.832  1.0
  O  O26  1  0.593  0.418  0.146  1.0
  O  O27  1  0.613  0.113  0.387  1.0
  O  O28  1  0.907  0.582  0.646  1.0
  O  O29  1  0.832  0.657  0.104  1.0
  O  O30  1  0.887  0.887  0.887  1.0
  O  O31  1  0.843  0.896  0.332  1.0
  O  O32  1  0.863  0.137  0.637  1.0
  O  O33  1  0.896  0.332  0.843  1.0
  O  O34  1  0.854  0.093  0.082  1.0
  O  O35  1  0.918  0.354  0.407  1.0
  O  O36  1  0.137  0.637  0.863  1.0
  O  O37  1  0.104  0.832  0.657  1.0
  O  O38  1  0.082  0.854  0.093  1.0
  O  O39  1  0.093  0.082  0.854  1.0
  O  O40  1  0.146  0.593  0.418  1.0
  O  O41  1  0.168  0.157  0.396  1.0
  O  O42  1  0.113  0.387  0.613  1.0
  O  O43  1  0.157  0.396  0.168  1.0
  O  O44  1  0.343  0.604  0.668  1.0
  O  O45  1  0.387  0.613  0.113  1.0
  O  O46  1  0.332  0.843  0.896  1.0
  O  O47  1  0.418  0.146  0.593  1.0
  O  O48  1  0.396  0.168  0.157  1.0
  O  O49  1  0.407  0.918  0.354  1.0
  O  O50  1  0.354  0.407  0.918  1.0
  O  O51  1  0.363  0.363  0.363  1.0
[/CIF]
.