data_Na2Te2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.18
_cell_length_b   7.18
_cell_length_c   7.18
_cell_angle_alpha   119.99
_cell_angle_beta   90.77
_cell_angle_gamma   119.12
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2Te2O7
_chemical_formula_sum   'Na4 Te4 O14'
_cell_volume   263.82
_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
  Na  Na0  1  0.2  0.52  0.82  1.0
  Na  Na1  1  0.8  0.52  0.82  1.0
  Na  Na2  1  0.0  0.05  0.0  1.0
  Na  Na3  1  0.0  0.0  0.0  1.0
  Te  Te18  1  0.59  0.0  0.0  1.0
  Te  Te19  1  0.0  0.0  0.64  1.0
  Te  Te20  1  0.8  0.48  0.82  1.0
  Te  Te21  1  0.8  0.52  0.18  1.0
  O  O4  1  0.08  0.26  0.46  1.0
  O  O5  1  0.51  0.83  0.1  1.0
  O  O6  1  0.08  0.83  0.54  1.0
  O  O7  1  0.1  0.22  0.54  1.0
  O  O8  1  0.51  0.78  0.18  1.0
  O  O9  1  0.08  0.22  0.54  1.0
  O  O10  1  0.51  0.22  0.1  1.0
  O  O11  1  0.49  0.83  0.1  1.0
  O  O12  1  0.59  0.84  0.64  1.0
  O  O13  1  0.59  0.21  0.64  1.0
  O  O14  1  0.0  0.21  1.0  1.0
  O  O15  1  0.0  0.84  1.0  1.0
  O  O16  1  0.0  0.57  0.11  1.0
  O  O17  1  0.59  0.48  0.53  1.0

data_Na2Te2O7
_symmetry_space_group_name_H-M   P1
_cell_length_a   7.18
_cell_length_b   7.18
_cell_length_c   7.18
_cell_angle_alpha   90.77
_cell_angle_beta   119.12
_cell_angle_gamma   119.99
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2Te2O7
_chemical_formula_sum   'Na4 Te4 O14'
_cell_volume   263.82
_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
  Na  Na0  1  0.0  0.0  0.0  1.0
  Na  Na1  1  0.0  -0.0  0.05  1.0
  Na  Na2  1  0.38  0.18  0.7  1.0
  Na  Na3  1  0.98  0.18  0.7  1.0
  Te  Te4  1  0.36  0.36  0.36  1.0
  Te  Te5  1  0.59  0.0  0.0  1.0
  Te  Te6  1  0.62  0.82  0.34  1.0
  Te  Te7  1  0.98  0.18  0.66  1.0
  O  O8  1  0.0  0.0  0.21  1.0
  O  O9  1  0.0  0.0  0.84  1.0
  O  O10  1  0.06  0.47  0.95  1.0
  O  O11  1  0.33  0.82  0.6  1.0
  O  O12  1  0.39  0.9  0.73  1.0
  O  O13  1  0.41  0.9  0.12  1.0
  O  O14  1  0.41  0.9  0.73  1.0
  O  O15  1  0.54  0.46  0.67  1.0
  O  O16  1  0.54  0.46  0.29  1.0
  O  O17  1  0.56  0.46  0.67  1.0
  O  O18  1  0.62  0.54  0.8  1.0
  O  O19  1  0.89  0.89  0.46  1.0
  O  O20  1  0.95  0.36  0.2  1.0
  O  O21  1  0.95  0.36  0.57  1.0

Na Na Na Na Te Te Te Te O O O O O O O O O O O O O O
Na Na Na Na Te Te Te Te O O O O O O O O O O O O O O 0 13 o o o 0 11 o o o 0 8 o o o 0 15 o o + 0 9 o o + 1 6 o o o 1 17 o o o 1 21 o o o 2 3 o o o 2 18 o o - 3 19 o - - 4 15 o - o 4 14 o o o 4 9 o - o 4 16 o - - 5 10 o - o 5 16 - - o 6 17 o o o 6 21 o o o 7 20 + o o 7 14 o o o 8 13 o o o 8 11 o o o 9 15 o o o 9 12 o o o 11 13 o o o 12 15 o o o 14 21 o o o 16 17 o + o 16 21 o o o 16 18 + + o 17 21 o o o 