data_[Sr2Mg1Tl1Cu1O5]
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
  Cu  1.9000  1.3500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [3.8428]
_cell_length_b [3.8428]
_cell_length_c [12.2680]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [Sr2MgTlCuO5]
_chemical_formula_sum '[Sr2 Mg1 Tl1 Cu1 O5]'
_cell_volume [181.1648]
_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  0.5000  0.5000  0.1948  1
  Mg  Mg1  1  0.5000  0.5000  0.5000  1
  Tl  Tl2  1  0.0000  0.0000  0.0000  1
  Cu  Cu3  1  0.0000  0.0000  0.5000  1
  O  O4  2  0.0000  0.0000  0.1913  1
  O  O5  2  0.0000  0.5000  0.5000  1
  O  O6  1  0.5000  0.5000  0.0000  1
]