The compound described by Na2SnO3 is Caswellsilverite-like structured and crystallizes in the orthorhombic Fddd space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(2) and four equivalent O(1) 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 Sn(1)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with five equivalent Na(2)O6 octahedra, and edges with five equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-13°. In the second Na site, Na(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra, edges with three equivalent Na(2)O6 octahedra, edges with four equivalent Sn(1)O6 octahedra, and edges with five equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-12°. Sn(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SnO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Na(2)O6 octahedra, edges with three equivalent Sn(1)O6 octahedra, edges with four equivalent Na(2)O6 octahedra, and edges with five equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-12°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Sn(1) atoms to form a mixture of edge and corner-sharing ONa4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 6-12°. In the second O site, O(2) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Sn(1) atoms to form a mixture of edge and corner-sharing ONa4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 5-9°. is represented by the CIF card [CIF]
data_Na2SnO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.572
_cell_length_b   10.076
_cell_length_c   5.614
_cell_angle_alpha   79.157
_cell_angle_beta   69.397
_cell_angle_gamma   31.442
_symmetry_Int_Tables_number   1
_cell_volume   284.210
_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  0.995  0.995  0.505  1.0
  Na  Na1  1  0.422  0.422  0.577  1.0
  Na  Na2  1  0.828  0.828  0.673  1.0
  Na  Na3  1  0.255  0.255  0.745  1.0
  Na  Na4  1  0.745  0.745  0.255  1.0
  Na  Na5  1  0.672  0.672  0.828  1.0
  Na  Na6  1  0.578  0.578  0.422  1.0
  Na  Na7  1  0.505  0.505  0.995  1.0
  Sn  Sn8  1  0.916  0.916  0.084  1.0
  Sn  Sn9  1  0.334  0.334  0.166  1.0
  Sn  Sn10  1  0.166  0.166  0.334  1.0
  Sn  Sn11  1  0.084  0.084  0.916  1.0
  O  O12  1  0.153  0.664  0.308  1.0
  O  O13  1  0.664  0.153  0.875  1.0
  O  O14  1  0.097  0.586  0.942  1.0
  O  O15  1  0.586  0.097  0.375  1.0
  O  O16  1  0.040  0.460  0.460  1.0
  O  O17  1  0.460  0.040  0.040  1.0
  O  O18  1  0.375  0.942  0.586  1.0
  O  O19  1  0.942  0.375  0.097  1.0
  O  O20  1  0.875  0.308  0.664  1.0
  O  O21  1  0.308  0.875  0.153  1.0
  O  O22  1  0.210  0.790  0.790  1.0
  O  O23  1  0.790  0.210  0.210  1.0
[/CIF]
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The compound described by Na2SnO3 is Caswellsilverite-like structured and crystallizes in the orthorhombic Fddd space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(2) and four equivalent O(1) 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 Sn(1)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with five equivalent Na(2)O6 octahedra, and edges with five equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-13°. In the second Na site, Na(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Sn(1)O6 octahedra, edges with three equivalent Na(2)O6 octahedra, edges with four equivalent Sn(1)O6 octahedra, and edges with five equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-12°. Sn(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form SnO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with four equivalent Na(2)O6 octahedra, edges with three equivalent Sn(1)O6 octahedra, edges with four equivalent Na(2)O6 octahedra, and edges with five equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-12°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Sn(1) atoms to form a mixture of edge and corner-sharing ONa4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 6-12°. In the second O site, O(2) is bonded to two equivalent Na(1), two equivalent Na(2), and two equivalent Sn(1) atoms to form a mixture of edge and corner-sharing ONa4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 5-9°. is represented by the CIF card [CIF]
data_Na2SnO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.572
_cell_length_b   10.076
_cell_length_c   5.614
_cell_angle_alpha   79.157
_cell_angle_beta   69.397
_cell_angle_gamma   31.442
_symmetry_Int_Tables_number   1
_cell_volume   284.210
_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  0.995  0.995  0.505  1.0
  Na  Na1  1  0.422  0.422  0.577  1.0
  Na  Na2  1  0.828  0.828  0.673  1.0
  Na  Na3  1  0.255  0.255  0.745  1.0
  Na  Na4  1  0.745  0.745  0.255  1.0
  Na  Na5  1  0.672  0.672  0.828  1.0
  Na  Na6  1  0.578  0.578  0.422  1.0
  Na  Na7  1  0.505  0.505  0.995  1.0
  Sn  Sn8  1  0.916  0.916  0.084  1.0
  Sn  Sn9  1  0.334  0.334  0.166  1.0
  Sn  Sn10  1  0.166  0.166  0.334  1.0
  Sn  Sn11  1  0.084  0.084  0.916  1.0
  O  O12  1  0.153  0.664  0.308  1.0
  O  O13  1  0.664  0.153  0.875  1.0
  O  O14  1  0.097  0.586  0.942  1.0
  O  O15  1  0.586  0.097  0.375  1.0
  O  O16  1  0.040  0.460  0.460  1.0
  O  O17  1  0.460  0.040  0.040  1.0
  O  O18  1  0.375  0.942  0.586  1.0
  O  O19  1  0.942  0.375  0.097  1.0
  O  O20  1  0.875  0.308  0.664  1.0
  O  O21  1  0.308  0.875  0.153  1.0
  O  O22  1  0.210  0.790  0.790  1.0
  O  O23  1  0.790  0.210  0.210  1.0
[/CIF]
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