data_[Ac8P2Se4N4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  P  2.1900  1.0000  0.5500
  Se  2.5500  1.1500  1.0133
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [16.1333]
_cell_length_b [4.2329]
_cell_length_c [7.7904]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.2366]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Ac4P(SeN)2]
_chemical_formula_sum '[Ac8 P2 Se4 N4]'
_cell_volume [495.8854]
_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
[
  Ac  Ac0  4  0.0301  0.5000  0.7542  1
  Ac  Ac1  4  0.2148  0.0000  0.1741  1
  P  P2  2  0.0000  0.0000  0.0000  1
  Se  Se3  4  0.1263  0.0000  0.5353  1
  N  N4  4  0.1745  0.5000  0.9834  1
]