The compound described by Na3(WO3)4 crystallizes in the orthorhombic Immm space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form NaO12 cuboctahedra that share corners with four equivalent Na(2)O12 cuboctahedra, corners with four equivalent Na(3)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. In the second Na site, Na(2) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form NaO12 cuboctahedra that share corners with four equivalent Na(1)O12 cuboctahedra, corners with four equivalent Na(3)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. In the third Na site, Na(3) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form NaO12 cuboctahedra that share corners with four equivalent Na(1)O12 cuboctahedra, corners with four equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form WO6 octahedra that share corners with six equivalent W(1)O6 octahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra, and faces with two equivalent Na(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-10°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(2), one Na(3), and two equivalent W(1) atoms to form a mixture of distorted edge, corner, and face-sharing ONa3W2 square pyramids. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Na(3), and two equivalent W(1) atoms to form a mixture of distorted edge, corner, and face-sharing ONa3W2 square pyramids. In the third O site, O(3) is bonded to one Na(1), one Na(2), one Na(3), and two equivalent W(1) atoms to form a mixture of distorted edge, corner, and face-sharing ONa3W2 square pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3(WO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.813
_cell_length_b   6.813
_cell_length_c   6.813
_cell_angle_alpha   109.586
_cell_angle_beta   109.430
_cell_angle_gamma   109.398
_symmetry_Int_Tables_number   1
_cell_volume   243.467
_cell_formula_units_Z   1
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  0.000  0.500  1.0
  Na  Na1  1  0.500  0.500  0.000  1.0
  Na  Na2  1  0.000  0.500  0.500  1.0
  W  W3  1  0.500  0.000  0.000  1.0
  W  W4  1  0.000  0.500  0.000  1.0
  W  W5  1  0.500  0.500  0.500  1.0
  W  W6  1  0.000  0.000  0.500  1.0
  O  O7  1  0.745  0.254  0.999  1.0
  O  O8  1  0.017  0.251  0.766  1.0
  O  O9  1  0.749  0.021  0.271  1.0
  O  O10  1  0.255  0.746  0.001  1.0
  O  O11  1  0.255  0.254  0.509  1.0
  O  O12  1  0.251  0.522  0.271  1.0
  O  O13  1  0.516  0.749  0.766  1.0
  O  O14  1  0.484  0.251  0.234  1.0
  O  O15  1  0.749  0.478  0.729  1.0
  O  O16  1  0.745  0.746  0.491  1.0
  O  O17  1  0.983  0.749  0.234  1.0
  O  O18  1  0.251  0.979  0.729  1.0
[/CIF]
.
The compound described by Na3(WO3)4 crystallizes in the orthorhombic Immm space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form NaO12 cuboctahedra that share corners with four equivalent Na(2)O12 cuboctahedra, corners with four equivalent Na(3)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. In the second Na site, Na(2) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form NaO12 cuboctahedra that share corners with four equivalent Na(1)O12 cuboctahedra, corners with four equivalent Na(3)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Na(3)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. In the third Na site, Na(3) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form NaO12 cuboctahedra that share corners with four equivalent Na(1)O12 cuboctahedra, corners with four equivalent Na(2)O12 cuboctahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form WO6 octahedra that share corners with six equivalent W(1)O6 octahedra, faces with two equivalent Na(1)O12 cuboctahedra, faces with two equivalent Na(2)O12 cuboctahedra, and faces with two equivalent Na(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-10°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(2), one Na(3), and two equivalent W(1) atoms to form a mixture of distorted edge, corner, and face-sharing ONa3W2 square pyramids. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Na(3), and two equivalent W(1) atoms to form a mixture of distorted edge, corner, and face-sharing ONa3W2 square pyramids. In the third O site, O(3) is bonded to one Na(1), one Na(2), one Na(3), and two equivalent W(1) atoms to form a mixture of distorted edge, corner, and face-sharing ONa3W2 square pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3(WO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.813
_cell_length_b   6.813
_cell_length_c   6.813
_cell_angle_alpha   109.586
_cell_angle_beta   109.430
_cell_angle_gamma   109.398
_symmetry_Int_Tables_number   1
_cell_volume   243.467
_cell_formula_units_Z   1
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  0.000  0.500  1.0
  Na  Na1  1  0.500  0.500  0.000  1.0
  Na  Na2  1  0.000  0.500  0.500  1.0
  W  W3  1  0.500  0.000  0.000  1.0
  W  W4  1  0.000  0.500  0.000  1.0
  W  W5  1  0.500  0.500  0.500  1.0
  W  W6  1  0.000  0.000  0.500  1.0
  O  O7  1  0.745  0.254  0.999  1.0
  O  O8  1  0.017  0.251  0.766  1.0
  O  O9  1  0.749  0.021  0.271  1.0
  O  O10  1  0.255  0.746  0.001  1.0
  O  O11  1  0.255  0.254  0.509  1.0
  O  O12  1  0.251  0.522  0.271  1.0
  O  O13  1  0.516  0.749  0.766  1.0
  O  O14  1  0.484  0.251  0.234  1.0
  O  O15  1  0.749  0.478  0.729  1.0
  O  O16  1  0.745  0.746  0.491  1.0
  O  O17  1  0.983  0.749  0.234  1.0
  O  O18  1  0.251  0.979  0.729  1.0
[/CIF]
.