data_[Ho8Si4N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ho  1.2300  1.7500  1.0410
  Si  1.9000  1.1000  0.5400
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [7.3211]
_cell_length_b [8.7687]
_cell_length_c [4.7818]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Ho2SiN2]
_chemical_formula_sum '[Ho8 Si4 N8]'
_cell_volume [306.9699]
_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
[
  Ho  Ho0  8  0.1558  0.1450  0.5000  1
  Si  Si1  4  0.0000  0.5000  0.2500  1
  N  N2  8  0.1650  0.1273  0.0000  1
]