data_[Sr2U2Si4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  U  1.3800  1.7500  0.9913
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [7.0970]
_cell_length_b [7.0970]
_cell_length_c [6.1814]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [SrU(SiO4)2]
_chemical_formula_sum '[Sr2 U2 Si4 O16]'
_cell_volume [311.3434]
_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  2  0.0000  0.0000  0.0000  1
  U  U1  2  0.0000  0.5000  0.2500  1
  Si  Si2  2  0.0000  0.0000  0.5000  1
  Si  Si3  2  0.0000  0.5000  0.7500  1
  O  O4  8  0.0000  0.1922  0.3452  1
  O  O5  8  0.0000  0.3328  0.9332  1
]