data_[Sr4Cu2P4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Cu  1.9000  1.3500  0.8200
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.6515]
_cell_length_b [5.1329]
_cell_length_c [6.6795]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.3760]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2Cu(PO4)2]
_chemical_formula_sum '[Sr4 Cu2 P4 O16]'
_cell_volume [383.2645]
_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  0.1706  0.0000  0.2167  1
  Cu  Cu1  2  0.0000  0.5000  0.5000  1
  P  P2  4  0.1425  0.0000  0.7101  1
  O  O3  8  0.1307  0.2451  0.5635  1
  O  O4  4  0.0497  0.0000  0.8323  1
  O  O5  4  0.2287  0.5000  0.1415  1
]