data_[Er6Tm4Ag4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [3.5563]
_cell_length_b [3.5563]
_cell_length_c [29.2897]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Er3(TmAg)2]
_chemical_formula_sum '[Er6 Tm4 Ag4]'
_cell_volume [370.4375]
_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  0.0000  0.1252  1
  Er  Er1  2  0.0000  0.0000  0.0000  1
  Tm  Tm2  4  0.0000  0.0000  0.2907  1
  Ag  Ag3  4  0.0000  0.0000  0.4375  1
]