data_[Rb2Y4N4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Y  1.2200  1.8000  1.0400
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [7.1651]
_cell_length_b [7.1651]
_cell_length_c [3.2662]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [RbY2N2]
_chemical_formula_sum '[Rb2 Y4 N4]'
_cell_volume [167.6828]
_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
[
  Rb  Rb0  2  0.0000  0.0000  0.0000  1
  Y  Y1  4  0.1456  0.6456  0.5000  1
  N  N2  4  0.1476  0.3524  0.0000  1
]