data_[Sr3Mg2Tl7]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Mg  1.3100  1.5000  0.8600
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [5.1190]
_cell_length_b [4.8797]
_cell_length_c [15.7422]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.3923]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Sr3Mg2Tl7]
_chemical_formula_sum '[Sr3 Mg2 Tl7]'
_cell_volume [389.0142]
_cell_formula_units_Z [1]
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  2  0.1830  0.0000  0.3631  1.0
  Sr  Sr1  1  0.5000  0.5000  0.0000  1.0
  Mg  Mg2  2  0.3658  0.5000  0.7360  1.0
  Tl  Tl3  2  0.0837  0.5000  0.1617  1.0
  Tl  Tl4  2  0.2716  0.5000  0.5528  1.0
  Tl  Tl5  2  0.4214  0.0000  0.8413  1.0
  Tl  Tl6  1  0.0000  0.0000  0.0000  1.0
]