The crystal structure described by Na2TeO4 crystallizes in the orthorhombic Pbcn space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. Te(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form edge-sharing TeO6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Na(2), and one Te(1) atom. In the second O site, O(2) is bonded to one Na(1), one Na(2), and two equivalent Te(1) atoms to form a mixture of distorted corner and edge-sharing ONa2Te2 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2TeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.200
_cell_length_b   5.706
_cell_length_c   12.127
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   359.894
_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
  Na  Na0  1  0.750  0.000  0.642  1.0
  Na  Na1  1  0.250  0.500  0.858  1.0
  Na  Na2  1  0.250  0.000  0.358  1.0
  Na  Na3  1  0.750  0.500  0.142  1.0
  Na  Na4  1  0.750  0.000  0.225  1.0
  Na  Na5  1  0.250  0.500  0.275  1.0
  Na  Na6  1  0.250  0.000  0.775  1.0
  Na  Na7  1  0.750  0.500  0.725  1.0
  Te  Te8  1  0.750  0.000  0.928  1.0
  Te  Te9  1  0.250  0.500  0.572  1.0
  Te  Te10  1  0.250  0.000  0.072  1.0
  Te  Te11  1  0.750  0.500  0.428  1.0
  O  O12  1  0.111  0.297  0.674  1.0
  O  O13  1  0.611  0.203  0.826  1.0
  O  O14  1  0.889  0.797  0.826  1.0
  O  O15  1  0.389  0.703  0.674  1.0
  O  O16  1  0.889  0.703  0.326  1.0
  O  O17  1  0.389  0.797  0.174  1.0
  O  O18  1  0.111  0.203  0.174  1.0
  O  O19  1  0.611  0.297  0.326  1.0
  O  O20  1  0.072  0.320  0.449  1.0
  O  O21  1  0.572  0.180  0.051  1.0
  O  O22  1  0.928  0.820  0.051  1.0
  O  O23  1  0.428  0.680  0.449  1.0
  O  O24  1  0.572  0.320  0.551  1.0
  O  O25  1  0.072  0.180  0.949  1.0
  O  O26  1  0.428  0.820  0.949  1.0
  O  O27  1  0.928  0.680  0.551  1.0
[/CIF]
.
The crystal structure described by Na2TeO4 crystallizes in the orthorhombic Pbcn space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. Te(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form edge-sharing TeO6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Na(2), and one Te(1) atom. In the second O site, O(2) is bonded to one Na(1), one Na(2), and two equivalent Te(1) atoms to form a mixture of distorted corner and edge-sharing ONa2Te2 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2TeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.200
_cell_length_b   5.706
_cell_length_c   12.127
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   359.894
_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
  Na  Na0  1  0.750  0.000  0.642  1.0
  Na  Na1  1  0.250  0.500  0.858  1.0
  Na  Na2  1  0.250  0.000  0.358  1.0
  Na  Na3  1  0.750  0.500  0.142  1.0
  Na  Na4  1  0.750  0.000  0.225  1.0
  Na  Na5  1  0.250  0.500  0.275  1.0
  Na  Na6  1  0.250  0.000  0.775  1.0
  Na  Na7  1  0.750  0.500  0.725  1.0
  Te  Te8  1  0.750  0.000  0.928  1.0
  Te  Te9  1  0.250  0.500  0.572  1.0
  Te  Te10  1  0.250  0.000  0.072  1.0
  Te  Te11  1  0.750  0.500  0.428  1.0
  O  O12  1  0.111  0.297  0.674  1.0
  O  O13  1  0.611  0.203  0.826  1.0
  O  O14  1  0.889  0.797  0.826  1.0
  O  O15  1  0.389  0.703  0.674  1.0
  O  O16  1  0.889  0.703  0.326  1.0
  O  O17  1  0.389  0.797  0.174  1.0
  O  O18  1  0.111  0.203  0.174  1.0
  O  O19  1  0.611  0.297  0.326  1.0
  O  O20  1  0.072  0.320  0.449  1.0
  O  O21  1  0.572  0.180  0.051  1.0
  O  O22  1  0.928  0.820  0.051  1.0
  O  O23  1  0.428  0.680  0.449  1.0
  O  O24  1  0.572  0.320  0.551  1.0
  O  O25  1  0.072  0.180  0.949  1.0
  O  O26  1  0.428  0.820  0.949  1.0
  O  O27  1  0.928  0.680  0.551  1.0
[/CIF]
.