The compound described by K2TeO4 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 6-coordinate geometry to one O(2), one O(3), two equivalent O(1), 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 Te(1)O4 tetrahedra and edges with two equivalent K(2)O6 octahedra. Te(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form TeO4 tetrahedra that share corners with six equivalent K(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 27-65°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one K(2), two equivalent K(1), and one Te(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 Te(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 Te(1) atom. In the fourth O site, O(4) is bonded to two equivalent K(1), two equivalent K(2), and one Te(1) atom to form distorted corner-sharing OK4Te trigonal bipyramids. is represented by the CIF file [CIF]
data_K2TeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.051
_cell_length_b   6.229
_cell_length_c   12.131
_cell_angle_alpha   63.924
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   546.437
_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
  K  K0  1  0.203  0.787  0.918  1.0
  K  K1  1  0.504  0.500  0.765  1.0
  K  K2  1  0.297  0.787  0.418  1.0
  K  K3  1  0.004  0.500  0.735  1.0
  K  K4  1  0.996  0.500  0.265  1.0
  K  K5  1  0.703  0.213  0.582  1.0
  K  K6  1  0.496  0.500  0.235  1.0
  K  K7  1  0.797  0.213  0.082  1.0
  Te  Te8  1  0.729  0.850  0.925  1.0
  Te  Te9  1  0.771  0.850  0.425  1.0
  Te  Te10  1  0.229  0.150  0.575  1.0
  Te  Te11  1  0.271  0.150  0.075  1.0
  O  O12  1  0.883  0.687  0.881  1.0
  O  O13  1  0.524  0.774  0.889  1.0
  O  O14  1  0.744  0.758  0.589  1.0
  O  O15  1  0.260  0.827  0.656  1.0
  O  O16  1  0.617  0.687  0.381  1.0
  O  O17  1  0.976  0.774  0.389  1.0
  O  O18  1  0.760  0.173  0.844  1.0
  O  O19  1  0.244  0.242  0.911  1.0
  O  O20  1  0.756  0.758  0.089  1.0
  O  O21  1  0.240  0.827  0.156  1.0
  O  O22  1  0.024  0.226  0.611  1.0
  O  O23  1  0.383  0.313  0.619  1.0
  O  O24  1  0.740  0.173  0.344  1.0
  O  O25  1  0.256  0.242  0.411  1.0
  O  O26  1  0.476  0.226  0.111  1.0
  O  O27  1  0.117  0.313  0.119  1.0
[/CIF]
.
The compound described by K2TeO4 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 6-coordinate geometry to one O(2), one O(3), two equivalent O(1), 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 Te(1)O4 tetrahedra and edges with two equivalent K(2)O6 octahedra. Te(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form TeO4 tetrahedra that share corners with six equivalent K(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 27-65°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one K(2), two equivalent K(1), and one Te(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 Te(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 Te(1) atom. In the fourth O site, O(4) is bonded to two equivalent K(1), two equivalent K(2), and one Te(1) atom to form distorted corner-sharing OK4Te trigonal bipyramids. is represented by the CIF file [CIF]
data_K2TeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.051
_cell_length_b   6.229
_cell_length_c   12.131
_cell_angle_alpha   63.924
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   546.437
_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
  K  K0  1  0.203  0.787  0.918  1.0
  K  K1  1  0.504  0.500  0.765  1.0
  K  K2  1  0.297  0.787  0.418  1.0
  K  K3  1  0.004  0.500  0.735  1.0
  K  K4  1  0.996  0.500  0.265  1.0
  K  K5  1  0.703  0.213  0.582  1.0
  K  K6  1  0.496  0.500  0.235  1.0
  K  K7  1  0.797  0.213  0.082  1.0
  Te  Te8  1  0.729  0.850  0.925  1.0
  Te  Te9  1  0.771  0.850  0.425  1.0
  Te  Te10  1  0.229  0.150  0.575  1.0
  Te  Te11  1  0.271  0.150  0.075  1.0
  O  O12  1  0.883  0.687  0.881  1.0
  O  O13  1  0.524  0.774  0.889  1.0
  O  O14  1  0.744  0.758  0.589  1.0
  O  O15  1  0.260  0.827  0.656  1.0
  O  O16  1  0.617  0.687  0.381  1.0
  O  O17  1  0.976  0.774  0.389  1.0
  O  O18  1  0.760  0.173  0.844  1.0
  O  O19  1  0.244  0.242  0.911  1.0
  O  O20  1  0.756  0.758  0.089  1.0
  O  O21  1  0.240  0.827  0.156  1.0
  O  O22  1  0.024  0.226  0.611  1.0
  O  O23  1  0.383  0.313  0.619  1.0
  O  O24  1  0.740  0.173  0.344  1.0
  O  O25  1  0.256  0.242  0.411  1.0
  O  O26  1  0.476  0.226  0.111  1.0
  O  O27  1  0.117  0.313  0.119  1.0
[/CIF]
.