The material structure described by Na2SnO2 crystallizes in the orthorhombic P2_12_12_1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to one O(2) and three equivalent O(1) atoms. In the second Na site, Na(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Sn(1) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(2), three equivalent Na(1), and one Sn(1) atom to form a mixture of edge and corner-sharing ONa5Sn octahedra. The corner-sharing octahedral tilt angles range from 3-5°. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(2), and two equivalent Sn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2SnO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.266
_cell_length_b   6.697
_cell_length_c   9.761
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   344.222
_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  0.007  0.620  0.427  1.0
  Na  Na1  1  0.009  0.137  0.754  1.0
  Na  Na2  1  0.491  0.863  0.254  1.0
  Na  Na3  1  0.493  0.380  0.927  1.0
  Na  Na4  1  0.507  0.880  0.573  1.0
  Na  Na5  1  0.509  0.363  0.246  1.0
  Na  Na6  1  0.991  0.637  0.746  1.0
  Na  Na7  1  0.993  0.120  0.073  1.0
  Sn  Sn8  1  0.004  0.098  0.428  1.0
  Sn  Sn9  1  0.496  0.902  0.928  1.0
  Sn  Sn10  1  0.504  0.402  0.572  1.0
  Sn  Sn11  1  0.996  0.598  0.072  1.0
  O  O12  1  0.018  0.891  0.581  1.0
  O  O13  1  0.110  0.339  0.556  1.0
  O  O14  1  0.390  0.661  0.056  1.0
  O  O15  1  0.482  0.109  0.081  1.0
  O  O16  1  0.518  0.609  0.419  1.0
  O  O17  1  0.610  0.161  0.444  1.0
  O  O18  1  0.890  0.839  0.944  1.0
  O  O19  1  0.982  0.391  0.919  1.0
[/CIF]
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The material structure described by Na2SnO2 crystallizes in the orthorhombic P2_12_12_1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to one O(2) and three equivalent O(1) atoms. In the second Na site, Na(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Sn(1) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(2), three equivalent Na(1), and one Sn(1) atom to form a mixture of edge and corner-sharing ONa5Sn octahedra. The corner-sharing octahedral tilt angles range from 3-5°. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(2), and two equivalent Sn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2SnO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.266
_cell_length_b   6.697
_cell_length_c   9.761
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   344.222
_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  0.007  0.620  0.427  1.0
  Na  Na1  1  0.009  0.137  0.754  1.0
  Na  Na2  1  0.491  0.863  0.254  1.0
  Na  Na3  1  0.493  0.380  0.927  1.0
  Na  Na4  1  0.507  0.880  0.573  1.0
  Na  Na5  1  0.509  0.363  0.246  1.0
  Na  Na6  1  0.991  0.637  0.746  1.0
  Na  Na7  1  0.993  0.120  0.073  1.0
  Sn  Sn8  1  0.004  0.098  0.428  1.0
  Sn  Sn9  1  0.496  0.902  0.928  1.0
  Sn  Sn10  1  0.504  0.402  0.572  1.0
  Sn  Sn11  1  0.996  0.598  0.072  1.0
  O  O12  1  0.018  0.891  0.581  1.0
  O  O13  1  0.110  0.339  0.556  1.0
  O  O14  1  0.390  0.661  0.056  1.0
  O  O15  1  0.482  0.109  0.081  1.0
  O  O16  1  0.518  0.609  0.419  1.0
  O  O17  1  0.610  0.161  0.444  1.0
  O  O18  1  0.890  0.839  0.944  1.0
  O  O19  1  0.982  0.391  0.919  1.0
[/CIF]
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