data_[Sr4Pm4As4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Pm  1.1300  1.8500  1.1100
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.3120]
_cell_length_b [9.8586]
_cell_length_c [7.9514]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.3909]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [SrPmAsO5]
_chemical_formula_sum '[Sr4 Pm4 As4 O20]'
_cell_volume [533.6964]
_cell_formula_units_Z [4]
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  0.3316  0.2500  1
  Pm  Pm1  4  0.0000  0.0000  0.0000  1
  As  As2  4  0.0000  0.3232  0.7500  1
  O  O3  8  0.1134  0.2203  0.6404  1
  O  O4  8  0.1583  0.4304  0.9091  1
  O  O5  4  0.0000  0.0990  0.2500  1
]