The material described by Na2SnO3 is Caswellsilverite-like structured and crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. In the second Na site, Na(2) is bonded to six equivalent O(1) atoms to form NaO6 octahedra that share edges with six equivalent Sn(1)O6 octahedra. Sn(1) is bonded to six equivalent O(1) atoms to form SnO6 octahedra that share edges with three equivalent Na(2)O6 octahedra and edges with three equivalent Sn(1)O6 octahedra. O(1) is bonded to one Na(2), three equivalent Na(1), and two equivalent Sn(1) atoms to form a mixture of corner, edge, and face-sharing ONa4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-49°. is represented by the CIF card [CIF]
data_Na2SnO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.511
_cell_length_b   5.511
_cell_length_c   10.998
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.003
_symmetry_Int_Tables_number   1
_cell_volume   289.303
_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  1.000  0.680  0.250  1.0
  Na  Na1  1  0.320  0.000  0.750  1.0
  Na  Na2  1  0.000  0.320  0.750  1.0
  Na  Na3  1  1.000  0.000  0.000  1.0
  Na  Na4  1  1.000  0.000  0.500  1.0
  Na  Na5  1  0.320  0.320  0.250  1.0
  Na  Na6  1  0.680  1.000  0.250  1.0
  Na  Na7  1  0.680  0.680  0.750  1.0
  Sn  Sn8  1  0.333  0.667  0.000  1.0
  Sn  Sn9  1  0.667  0.333  0.000  1.0
  Sn  Sn10  1  0.667  0.333  0.500  1.0
  Sn  Sn11  1  0.333  0.667  0.500  1.0
  O  O12  1  0.000  0.633  0.605  1.0
  O  O13  1  0.000  0.633  0.895  1.0
  O  O14  1  1.000  0.367  0.105  1.0
  O  O15  1  1.000  0.367  0.395  1.0
  O  O16  1  0.367  1.000  0.105  1.0
  O  O17  1  0.367  1.000  0.395  1.0
  O  O18  1  0.633  0.000  0.605  1.0
  O  O19  1  0.633  0.000  0.895  1.0
  O  O20  1  0.367  0.367  0.605  1.0
  O  O21  1  0.367  0.367  0.895  1.0
  O  O22  1  0.633  0.633  0.105  1.0
  O  O23  1  0.633  0.633  0.395  1.0
[/CIF]
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The material described by Na2SnO3 is Caswellsilverite-like structured and crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. In the second Na site, Na(2) is bonded to six equivalent O(1) atoms to form NaO6 octahedra that share edges with six equivalent Sn(1)O6 octahedra. Sn(1) is bonded to six equivalent O(1) atoms to form SnO6 octahedra that share edges with three equivalent Na(2)O6 octahedra and edges with three equivalent Sn(1)O6 octahedra. O(1) is bonded to one Na(2), three equivalent Na(1), and two equivalent Sn(1) atoms to form a mixture of corner, edge, and face-sharing ONa4Sn2 octahedra. The corner-sharing octahedral tilt angles range from 0-49°. is represented by the CIF card [CIF]
data_Na2SnO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.511
_cell_length_b   5.511
_cell_length_c   10.998
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.003
_symmetry_Int_Tables_number   1
_cell_volume   289.303
_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  1.000  0.680  0.250  1.0
  Na  Na1  1  0.320  0.000  0.750  1.0
  Na  Na2  1  0.000  0.320  0.750  1.0
  Na  Na3  1  1.000  0.000  0.000  1.0
  Na  Na4  1  1.000  0.000  0.500  1.0
  Na  Na5  1  0.320  0.320  0.250  1.0
  Na  Na6  1  0.680  1.000  0.250  1.0
  Na  Na7  1  0.680  0.680  0.750  1.0
  Sn  Sn8  1  0.333  0.667  0.000  1.0
  Sn  Sn9  1  0.667  0.333  0.000  1.0
  Sn  Sn10  1  0.667  0.333  0.500  1.0
  Sn  Sn11  1  0.333  0.667  0.500  1.0
  O  O12  1  0.000  0.633  0.605  1.0
  O  O13  1  0.000  0.633  0.895  1.0
  O  O14  1  1.000  0.367  0.105  1.0
  O  O15  1  1.000  0.367  0.395  1.0
  O  O16  1  0.367  1.000  0.105  1.0
  O  O17  1  0.367  1.000  0.395  1.0
  O  O18  1  0.633  0.000  0.605  1.0
  O  O19  1  0.633  0.000  0.895  1.0
  O  O20  1  0.367  0.367  0.605  1.0
  O  O21  1  0.367  0.367  0.895  1.0
  O  O22  1  0.633  0.633  0.105  1.0
  O  O23  1  0.633  0.633  0.395  1.0
[/CIF]
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