data_[Pm2Dy2Si2Ni2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Dy  1.2200  1.7500  1.1310
  Si  1.9000  1.1000  0.5400
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.0673]
_cell_length_b [4.0893]
_cell_length_c [10.6378]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [PmDySiNi]
_chemical_formula_sum '[Pm2 Dy2 Si2 Ni2]'
_cell_volume [176.9336]
_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
[
  Pm  Pm0  2  0.0000  0.0000  0.8567  1
  Dy  Dy1  2  0.5000  0.0000  0.1379  1
  Si  Si2  2  0.5000  0.0000  0.4375  1
  Ni  Ni3  2  0.0000  0.0000  0.5680  1
]