data_[Er14Ni4Ag4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Ni  1.9100  1.3500  0.7400
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [3.6135]
_cell_length_b [15.7979]
_cell_length_c [9.5369]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Er7(NiAg)2]
_chemical_formula_sum '[Er14 Ni4 Ag4]'
_cell_volume [544.4266]
_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
[
  Er  Er0  4  0.0000  0.1415  0.7463  1
  Er  Er1  4  0.0000  0.1890  0.0956  1
  Er  Er2  4  0.0000  0.3742  0.9018  1
  Er  Er3  2  0.0000  0.5000  0.4841  1
  Ni  Ni4  4  0.0000  0.2575  0.3951  1
  Ag  Ag5  2  0.0000  0.0000  0.2390  1
  Ag  Ag6  2  0.0000  0.5000  0.1453  1
]