data_[Sr6Er3Ni27]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Er  1.2400  1.7500  1.0300
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [5.0097]
_cell_length_b [5.0097]
_cell_length_c [25.0005]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Sr2ErNi9]
_chemical_formula_sum '[Sr6 Er3 Ni27]'
_cell_volume [543.3824]
_cell_formula_units_Z [3]
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
[
  Sr  Sr0  6  0.0000  0.0000  0.1401  1.0
  Er  Er1  3  0.0000  0.0000  0.0000  1.0
  Ni  Ni2  18  0.0034  0.5017  0.0772  1.0
  Ni  Ni3  6  0.0000  0.0000  0.3323  1.0
  Ni  Ni4  3  -0.0000  -0.0000  0.5000  1.0
]