data_[Cu4Te2As2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cu  1.9000  1.3500  0.8200
  Te  2.1000  1.4000  1.2933
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.3891]
_cell_length_b [4.8994]
_cell_length_c [7.4459]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Cu2TeAs]
_chemical_formula_sum '[Cu4 Te2 As2]'
_cell_volume [160.1161]
_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
[
  Cu  Cu0  2  0.0000  0.0000  0.0319  1
  Cu  Cu1  2  0.5000  0.0000  0.2053  1
  Te  Te2  2  0.0000  0.0000  0.3951  1
  As  As3  2  0.5000  0.0000  0.8676  1
]