data_[Sr4Mg2W2O12]
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
  W  2.3600  1.3500  0.7667
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4/m]
_cell_length_a [5.6489]
_cell_length_b [5.6489]
_cell_length_c [8.0899]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [87]
_chemical_formula_structural [Sr2MgWO6]
_chemical_formula_sum '[Sr4 Mg2 W2 O12]'
_cell_volume [258.1502]
_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  0.0000  0.5000  0.2500  1.0
  Mg  Mg1  2  0.0000  0.0000  0.0000  1.0
  W  W2  2  0.0000  0.0000  0.5000  1.0
  O  O3  8  0.2011  0.7187  0.5000  1.0
  O  O4  4  0.0000  0.0000  0.2583  1.0
]