The compound described by K2NaTeO12 crystallizes in the monoclinic C2/m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 3-coordinate geometry to one O(6), two equivalent O(1), and two equivalent O(8) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), two equivalent O(7), and two equivalent O(8) atoms. Na(1) is bonded in a 6-coordinate geometry to one O(5), one O(9), two equivalent O(7), and two equivalent O(8) atoms. Te(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form distorted edge-sharing TeO6 octahedra. There are nine inequivalent O sites. In the first O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one K(1), one K(2), one Na(1), and one O(6) atom. In the second O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Na(1) and two equivalent O(2) atoms. In the third O site, O(1) is bonded to two equivalent K(1) and two equivalent Te(1) atoms to form edge-sharing OK2Te2 tetrahedra. In the fourth O site, O(2) is bonded in a bent 120 degrees geometry to one Te(1) and one O(9) atom. In the fifth O site, O(3) is bonded in a single-bond geometry to one Te(1) atom. In the sixth O site, O(4) is bonded in a 2-coordinate geometry to one K(2) and one Te(1) atom. In the seventh O site, O(5) is bonded in a distorted single-bond geometry to one K(2) and one Na(1) atom. In the eighth O site, O(6) is bonded in a trigonal non-coplanar geometry to one K(1) and two equivalent O(8) atoms. In the ninth O site, O(7) is bonded in a distorted T-shaped geometry to one K(2), one Na(1), and one O(7) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2NaTeO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.981
_cell_length_b   11.981
_cell_length_c   9.175
_cell_angle_alpha   69.655
_cell_angle_beta   69.655
_cell_angle_gamma   27.810
_symmetry_Int_Tables_number   1
_cell_volume   573.729
_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  0.496  0.496  0.259  1.0
  K  K1  1  0.504  0.504  0.741  1.0
  K  K2  1  0.174  0.174  0.455  1.0
  K  K3  1  0.826  0.826  0.545  1.0
  Na  Na4  1  0.681  0.681  0.117  1.0
  Na  Na5  1  0.319  0.319  0.883  1.0
  Te  Te6  1  0.929  0.929  0.073  1.0
  Te  Te7  1  0.071  0.071  0.927  1.0
  O  O8  1  0.225  0.775  0.000  1.0
  O  O9  1  0.775  0.225  0.000  1.0
  O  O10  1  0.176  0.564  0.171  1.0
  O  O11  1  0.436  0.824  0.829  1.0
  O  O12  1  0.824  0.436  0.829  1.0
  O  O13  1  0.564  0.176  0.171  1.0
  O  O14  1  0.906  0.906  0.902  1.0
  O  O15  1  0.094  0.094  0.098  1.0
  O  O16  1  0.079  0.079  0.720  1.0
  O  O17  1  0.921  0.921  0.280  1.0
  O  O18  1  0.775  0.775  0.897  1.0
  O  O19  1  0.225  0.225  0.103  1.0
  O  O20  1  0.605  0.605  0.451  1.0
  O  O21  1  0.395  0.395  0.549  1.0
  O  O22  1  0.862  0.643  0.282  1.0
  O  O23  1  0.357  0.138  0.718  1.0
  O  O24  1  0.138  0.357  0.718  1.0
  O  O25  1  0.643  0.862  0.282  1.0
  O  O26  1  0.803  0.410  0.367  1.0
  O  O27  1  0.590  0.197  0.633  1.0
  O  O28  1  0.197  0.590  0.633  1.0
  O  O29  1  0.410  0.803  0.367  1.0
  O  O30  1  0.624  0.624  0.927  1.0
  O  O31  1  0.376  0.376  0.073  1.0
[/CIF]
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The compound described by K2NaTeO12 crystallizes in the monoclinic C2/m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 3-coordinate geometry to one O(6), two equivalent O(1), and two equivalent O(8) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), two equivalent O(7), and two equivalent O(8) atoms. Na(1) is bonded in a 6-coordinate geometry to one O(5), one O(9), two equivalent O(7), and two equivalent O(8) atoms. Te(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form distorted edge-sharing TeO6 octahedra. There are nine inequivalent O sites. In the first O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one K(1), one K(2), one Na(1), and one O(6) atom. In the second O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Na(1) and two equivalent O(2) atoms. In the third O site, O(1) is bonded to two equivalent K(1) and two equivalent Te(1) atoms to form edge-sharing OK2Te2 tetrahedra. In the fourth O site, O(2) is bonded in a bent 120 degrees geometry to one Te(1) and one O(9) atom. In the fifth O site, O(3) is bonded in a single-bond geometry to one Te(1) atom. In the sixth O site, O(4) is bonded in a 2-coordinate geometry to one K(2) and one Te(1) atom. In the seventh O site, O(5) is bonded in a distorted single-bond geometry to one K(2) and one Na(1) atom. In the eighth O site, O(6) is bonded in a trigonal non-coplanar geometry to one K(1) and two equivalent O(8) atoms. In the ninth O site, O(7) is bonded in a distorted T-shaped geometry to one K(2), one Na(1), and one O(7) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2NaTeO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.981
_cell_length_b   11.981
_cell_length_c   9.175
_cell_angle_alpha   69.655
_cell_angle_beta   69.655
_cell_angle_gamma   27.810
_symmetry_Int_Tables_number   1
_cell_volume   573.729
_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  0.496  0.496  0.259  1.0
  K  K1  1  0.504  0.504  0.741  1.0
  K  K2  1  0.174  0.174  0.455  1.0
  K  K3  1  0.826  0.826  0.545  1.0
  Na  Na4  1  0.681  0.681  0.117  1.0
  Na  Na5  1  0.319  0.319  0.883  1.0
  Te  Te6  1  0.929  0.929  0.073  1.0
  Te  Te7  1  0.071  0.071  0.927  1.0
  O  O8  1  0.225  0.775  0.000  1.0
  O  O9  1  0.775  0.225  0.000  1.0
  O  O10  1  0.176  0.564  0.171  1.0
  O  O11  1  0.436  0.824  0.829  1.0
  O  O12  1  0.824  0.436  0.829  1.0
  O  O13  1  0.564  0.176  0.171  1.0
  O  O14  1  0.906  0.906  0.902  1.0
  O  O15  1  0.094  0.094  0.098  1.0
  O  O16  1  0.079  0.079  0.720  1.0
  O  O17  1  0.921  0.921  0.280  1.0
  O  O18  1  0.775  0.775  0.897  1.0
  O  O19  1  0.225  0.225  0.103  1.0
  O  O20  1  0.605  0.605  0.451  1.0
  O  O21  1  0.395  0.395  0.549  1.0
  O  O22  1  0.862  0.643  0.282  1.0
  O  O23  1  0.357  0.138  0.718  1.0
  O  O24  1  0.138  0.357  0.718  1.0
  O  O25  1  0.643  0.862  0.282  1.0
  O  O26  1  0.803  0.410  0.367  1.0
  O  O27  1  0.590  0.197  0.633  1.0
  O  O28  1  0.197  0.590  0.633  1.0
  O  O29  1  0.410  0.803  0.367  1.0
  O  O30  1  0.624  0.624  0.927  1.0
  O  O31  1  0.376  0.376  0.073  1.0
[/CIF]
.