The material described by Na(WO3)2 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted body-centered cubic geometry to eight equivalent O(2) atoms. In the second Na site, Na(2) is bonded to four equivalent O(1) and eight equivalent O(2) atoms to form NaO12 cuboctahedra that share faces with eight equivalent W(1)O6 octahedra. W(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form WO6 octahedra that share corners with six equivalent W(1)O6 octahedra and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 11-15°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Na(2) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), and two equivalent W(1) atoms. is represented by the CIF file [CIF]
data_Na(WO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.624
_cell_length_b   6.624
_cell_length_c   6.624
_cell_angle_alpha   109.363
_cell_angle_beta   109.363
_cell_angle_gamma   109.687
_symmetry_Int_Tables_number   1
_cell_volume   223.713
_cell_formula_units_Z   2
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  0.500  0.500  1.000  1.0
  Na  Na1  1  1.000  1.000  1.000  1.0
  W  W2  1  1.000  1.000  0.500  1.0
  W  W3  1  0.500  0.500  0.500  1.0
  W  W4  1  0.500  1.000  1.000  1.0
  W  W5  1  1.000  0.500  0.000  1.0
  O  O6  1  0.226  0.226  0.452  1.0
  O  O7  1  0.774  0.774  0.548  1.0
  O  O8  1  0.774  0.226  0.000  1.0
  O  O9  1  0.226  0.774  1.000  1.0
  O  O10  1  0.973  0.726  0.246  1.0
  O  O11  1  0.480  0.726  0.754  1.0
  O  O12  1  0.726  0.973  0.246  1.0
  O  O13  1  0.726  0.480  0.754  1.0
  O  O14  1  0.027  0.274  0.754  1.0
  O  O15  1  0.520  0.274  0.246  1.0
  O  O16  1  0.274  0.027  0.754  1.0
  O  O17  1  0.274  0.520  0.246  1.0
[/CIF]
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The material described by Na(WO3)2 crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted body-centered cubic geometry to eight equivalent O(2) atoms. In the second Na site, Na(2) is bonded to four equivalent O(1) and eight equivalent O(2) atoms to form NaO12 cuboctahedra that share faces with eight equivalent W(1)O6 octahedra. W(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form WO6 octahedra that share corners with six equivalent W(1)O6 octahedra and faces with two equivalent Na(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 11-15°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Na(2) and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), and two equivalent W(1) atoms. is represented by the CIF file [CIF]
data_Na(WO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.624
_cell_length_b   6.624
_cell_length_c   6.624
_cell_angle_alpha   109.363
_cell_angle_beta   109.363
_cell_angle_gamma   109.687
_symmetry_Int_Tables_number   1
_cell_volume   223.713
_cell_formula_units_Z   2
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  0.500  0.500  1.000  1.0
  Na  Na1  1  1.000  1.000  1.000  1.0
  W  W2  1  1.000  1.000  0.500  1.0
  W  W3  1  0.500  0.500  0.500  1.0
  W  W4  1  0.500  1.000  1.000  1.0
  W  W5  1  1.000  0.500  0.000  1.0
  O  O6  1  0.226  0.226  0.452  1.0
  O  O7  1  0.774  0.774  0.548  1.0
  O  O8  1  0.774  0.226  0.000  1.0
  O  O9  1  0.226  0.774  1.000  1.0
  O  O10  1  0.973  0.726  0.246  1.0
  O  O11  1  0.480  0.726  0.754  1.0
  O  O12  1  0.726  0.973  0.246  1.0
  O  O13  1  0.726  0.480  0.754  1.0
  O  O14  1  0.027  0.274  0.754  1.0
  O  O15  1  0.520  0.274  0.246  1.0
  O  O16  1  0.274  0.027  0.754  1.0
  O  O17  1  0.274  0.520  0.246  1.0
[/CIF]
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