data_[Pr1Er1Np2As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Er  1.2400  1.7500  1.0300
  Np  1.3600  1.7500  1.0000
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [7.1955]
_cell_length_b [4.1300]
_cell_length_c [7.1976]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.2285]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [PrEr(NpAs2)2]
_chemical_formula_sum '[Pr1 Er1 Np2 As4]'
_cell_volume [201.9610]
_cell_formula_units_Z [1]
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
[
  Pr  Pr0  1  0.0000  0.0000  0.0000  1
  Er  Er1  1  0.0000  0.5000  0.5000  1
  Np  Np2  1  0.5000  0.0000  0.5000  1
  Np  Np3  1  0.5000  0.5000  0.0000  1
  As  As4  2  0.2547  0.0000  0.7446  1
  As  As5  2  0.2602  0.5000  0.2604  1
]