data_[Ca16Tl4Cu4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Tl  1.6200  1.9000  1.3325
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [9.3090]
_cell_length_b [14.0161]
_cell_length_c [6.1502]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.8275]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Ca4TlCu]
_chemical_formula_sum '[Ca16 Tl4 Cu4]'
_cell_volume [754.8857]
_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
[
  Ca  Ca0  8  0.1147  0.1722  0.5601  1.0
  Ca  Ca1  8  0.2046  0.4249  0.8536  1.0
  Tl  Tl2  4  0.0000  0.3689  0.2500  1.0
  Cu  Cu3  4  0.0000  0.0007  0.7500  1.0
]