data_[Sr4Ca2Tl12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ca  1.0000  1.8000  1.1400
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [15.8094]
_cell_length_b [9.3118]
_cell_length_c [3.9421]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.4605]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2CaTl6]
_chemical_formula_sum '[Sr4 Ca2 Tl12]'
_cell_volume [580.3170]
_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
[
  Sr  Sr0  4  0.1661  0.5000  0.0012  1.0
  Ca  Ca1  2  0.0000  0.0000  0.0000  1.0
  Tl  Tl2  8  0.1660  0.1646  0.4469  1.0
  Tl  Tl3  4  0.0000  0.3323  0.5000  1.0
]