data_[Er12Tm4]
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
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [7.1199]
_cell_length_b [12.3322]
_cell_length_c [5.5297]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Er3Tm]
_chemical_formula_sum '[Er12 Tm4]'
_cell_volume [485.5263]
_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
[
  Er  Er0  8  0.2497  0.3334  0.7500  1
  Er  Er1  4  0.0000  0.4168  0.2500  1
  Tm  Tm2  4  0.0000  0.0833  0.7500  1
]