The compound described by Na2BiO3 is Caswellsilverite-like structured and crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Na(2)O6 octahedra, corners with two equivalent Bi(1)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with five equivalent Na(2)O6 octahedra, and edges with five equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-13°. In the second Na site, Na(2) is bonded to one O(1), two equivalent O(3), and three equivalent O(2) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Na(2)O6 octahedra, edges with two equivalent Na(2)O6 octahedra, edges with five equivalent Na(1)O6 octahedra, and edges with five equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-13°. Bi(1) is bonded to one O(2), two equivalent O(3), and three equivalent O(1) atoms to form BiO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Bi(1)O6 octahedra, edges with two equivalent Bi(1)O6 octahedra, edges with five equivalent Na(1)O6 octahedra, and edges with five equivalent Na(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-14°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Na(2), two equivalent Na(1), and three equivalent Bi(1) atoms to form ONa3Bi3 octahedra that share corners with two equivalent O(3)Na4Bi2 octahedra, corners with four equivalent O(1)Na3Bi3 octahedra, edges with two equivalent O(1)Na3Bi3 octahedra, edges with five equivalent O(3)Na4Bi2 octahedra, and edges with five equivalent O(2)Na5Bi octahedra. The corner-sharing octahedral tilt angles range from 1-14°. In the second O site, O(2) is bonded to two equivalent Na(1), three equivalent Na(2), and one Bi(1) atom to form ONa5Bi octahedra that share corners with two equivalent O(3)Na4Bi2 octahedra, corners with four equivalent O(2)Na5Bi octahedra, edges with two equivalent O(2)Na5Bi octahedra, edges with five equivalent O(1)Na3Bi3 octahedra, and edges with five equivalent O(3)Na4Bi2 octahedra. The corner-sharing octahedral tilt angles range from 6-12°. In the third O site, O(3) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Bi(1) atoms to form ONa4Bi2 octahedra that share corners with two equivalent O(1)Na3Bi3 octahedra, corners with two equivalent O(3)Na4Bi2 octahedra, corners with two equivalent O(2)Na5Bi octahedra, edges with two equivalent O(3)Na4Bi2 octahedra, edges with five equivalent O(1)Na3Bi3 octahedra, and edges with five equivalent O(2)Na5Bi octahedra. The corner-sharing octahedral tilt angles range from 1-7°. is represented by the CIF file [CIF]
data_Na2BiO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.036
_cell_length_b   4.837
_cell_length_c   6.774
_cell_angle_alpha   89.817
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   328.828
_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  0.745  0.256  0.888  1.0
  Na  Na1  1  0.755  0.256  0.388  1.0
  Na  Na2  1  0.419  0.251  0.874  1.0
  Na  Na3  1  0.081  0.251  0.374  1.0
  Na  Na4  1  0.919  0.749  0.626  1.0
  Na  Na5  1  0.581  0.749  0.126  1.0
  Na  Na6  1  0.245  0.744  0.612  1.0
  Na  Na7  1  0.255  0.744  0.112  1.0
  Bi  Bi8  1  0.090  0.241  0.860  1.0
  Bi  Bi9  1  0.410  0.241  0.360  1.0
  Bi  Bi10  1  0.590  0.759  0.640  1.0
  Bi  Bi11  1  0.910  0.759  0.140  1.0
  O  O12  1  0.571  0.240  0.607  1.0
  O  O13  1  0.929  0.240  0.107  1.0
  O  O14  1  0.935  0.251  0.656  1.0
  O  O15  1  0.565  0.251  0.156  1.0
  O  O16  1  0.248  0.247  0.620  1.0
  O  O17  1  0.252  0.247  0.120  1.0
  O  O18  1  0.748  0.753  0.880  1.0
  O  O19  1  0.752  0.753  0.380  1.0
  O  O20  1  0.435  0.749  0.844  1.0
  O  O21  1  0.065  0.749  0.344  1.0
  O  O22  1  0.071  0.760  0.893  1.0
  O  O23  1  0.429  0.760  0.393  1.0
[/CIF]
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The compound described by Na2BiO3 is Caswellsilverite-like structured and crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Na(2)O6 octahedra, corners with two equivalent Bi(1)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with five equivalent Na(2)O6 octahedra, and edges with five equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-13°. In the second Na site, Na(2) is bonded to one O(1), two equivalent O(3), and three equivalent O(2) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Na(2)O6 octahedra, edges with two equivalent Na(2)O6 octahedra, edges with five equivalent Na(1)O6 octahedra, and edges with five equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-13°. Bi(1) is bonded to one O(2), two equivalent O(3), and three equivalent O(1) atoms to form BiO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Bi(1)O6 octahedra, edges with two equivalent Bi(1)O6 octahedra, edges with five equivalent Na(1)O6 octahedra, and edges with five equivalent Na(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-14°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Na(2), two equivalent Na(1), and three equivalent Bi(1) atoms to form ONa3Bi3 octahedra that share corners with two equivalent O(3)Na4Bi2 octahedra, corners with four equivalent O(1)Na3Bi3 octahedra, edges with two equivalent O(1)Na3Bi3 octahedra, edges with five equivalent O(3)Na4Bi2 octahedra, and edges with five equivalent O(2)Na5Bi octahedra. The corner-sharing octahedral tilt angles range from 1-14°. In the second O site, O(2) is bonded to two equivalent Na(1), three equivalent Na(2), and one Bi(1) atom to form ONa5Bi octahedra that share corners with two equivalent O(3)Na4Bi2 octahedra, corners with four equivalent O(2)Na5Bi octahedra, edges with two equivalent O(2)Na5Bi octahedra, edges with five equivalent O(1)Na3Bi3 octahedra, and edges with five equivalent O(3)Na4Bi2 octahedra. The corner-sharing octahedral tilt angles range from 6-12°. In the third O site, O(3) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Bi(1) atoms to form ONa4Bi2 octahedra that share corners with two equivalent O(1)Na3Bi3 octahedra, corners with two equivalent O(3)Na4Bi2 octahedra, corners with two equivalent O(2)Na5Bi octahedra, edges with two equivalent O(3)Na4Bi2 octahedra, edges with five equivalent O(1)Na3Bi3 octahedra, and edges with five equivalent O(2)Na5Bi octahedra. The corner-sharing octahedral tilt angles range from 1-7°. is represented by the CIF file [CIF]
data_Na2BiO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.036
_cell_length_b   4.837
_cell_length_c   6.774
_cell_angle_alpha   89.817
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   328.828
_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  0.745  0.256  0.888  1.0
  Na  Na1  1  0.755  0.256  0.388  1.0
  Na  Na2  1  0.419  0.251  0.874  1.0
  Na  Na3  1  0.081  0.251  0.374  1.0
  Na  Na4  1  0.919  0.749  0.626  1.0
  Na  Na5  1  0.581  0.749  0.126  1.0
  Na  Na6  1  0.245  0.744  0.612  1.0
  Na  Na7  1  0.255  0.744  0.112  1.0
  Bi  Bi8  1  0.090  0.241  0.860  1.0
  Bi  Bi9  1  0.410  0.241  0.360  1.0
  Bi  Bi10  1  0.590  0.759  0.640  1.0
  Bi  Bi11  1  0.910  0.759  0.140  1.0
  O  O12  1  0.571  0.240  0.607  1.0
  O  O13  1  0.929  0.240  0.107  1.0
  O  O14  1  0.935  0.251  0.656  1.0
  O  O15  1  0.565  0.251  0.156  1.0
  O  O16  1  0.248  0.247  0.620  1.0
  O  O17  1  0.252  0.247  0.120  1.0
  O  O18  1  0.748  0.753  0.880  1.0
  O  O19  1  0.752  0.753  0.380  1.0
  O  O20  1  0.435  0.749  0.844  1.0
  O  O21  1  0.065  0.749  0.344  1.0
  O  O22  1  0.071  0.760  0.893  1.0
  O  O23  1  0.429  0.760  0.393  1.0
[/CIF]
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