The material structure described by K2WO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), and two equivalent O(4) atoms. In the second K site, K(2) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form KO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra and edges with two equivalent K(2)O6 octahedra. W(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form WO4 tetrahedra that share corners with six equivalent K(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one W(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one W(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one W(1) atom. In the fourth O site, O(4) is bonded to two equivalent K(1), two equivalent K(2), and one W(1) atom to form distorted corner-sharing OK4W trigonal bipyramids. is represented by the CIF card [CIF]
data_K2WO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.020
_cell_length_b   6.227
_cell_length_c   8.074
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   115.992
_symmetry_Int_Tables_number   1
_cell_volume   272.076
_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
  K  K0  1  0.825  0.212  0.250  1.0
  K  K1  1  0.500  0.500  0.500  1.0
  K  K2  1  0.500  0.500  1.000  1.0
  K  K3  1  0.175  0.788  0.750  1.0
  O  O4  1  0.766  0.259  0.929  1.0
  O  O5  1  0.766  0.259  0.571  1.0
  O  O6  1  0.178  0.240  0.750  1.0
  O  O7  1  0.301  0.177  0.250  1.0
  O  O8  1  0.699  0.823  0.750  1.0
  O  O9  1  0.822  0.760  0.250  1.0
  O  O10  1  0.234  0.741  0.071  1.0
  O  O11  1  0.234  0.741  0.429  1.0
  W  W12  1  0.850  0.144  0.750  1.0
  W  W13  1  0.150  0.856  0.250  1.0
[/CIF]
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The material structure described by K2WO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), and two equivalent O(4) atoms. In the second K site, K(2) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form KO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra and edges with two equivalent K(2)O6 octahedra. W(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form WO4 tetrahedra that share corners with six equivalent K(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one W(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one W(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one W(1) atom. In the fourth O site, O(4) is bonded to two equivalent K(1), two equivalent K(2), and one W(1) atom to form distorted corner-sharing OK4W trigonal bipyramids. is represented by the CIF card [CIF]
data_K2WO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.020
_cell_length_b   6.227
_cell_length_c   8.074
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   115.992
_symmetry_Int_Tables_number   1
_cell_volume   272.076
_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
  K  K0  1  0.825  0.212  0.250  1.0
  K  K1  1  0.500  0.500  0.500  1.0
  K  K2  1  0.500  0.500  1.000  1.0
  K  K3  1  0.175  0.788  0.750  1.0
  O  O4  1  0.766  0.259  0.929  1.0
  O  O5  1  0.766  0.259  0.571  1.0
  O  O6  1  0.178  0.240  0.750  1.0
  O  O7  1  0.301  0.177  0.250  1.0
  O  O8  1  0.699  0.823  0.750  1.0
  O  O9  1  0.822  0.760  0.250  1.0
  O  O10  1  0.234  0.741  0.071  1.0
  O  O11  1  0.234  0.741  0.429  1.0
  W  W12  1  0.850  0.144  0.750  1.0
  W  W13  1  0.150  0.856  0.250  1.0
[/CIF]
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