data_[Sm4Y2Er6As12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Y  1.2200  1.8000  1.0400
  Er  1.2400  1.7500  1.0300
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.0145]
_cell_length_b [4.1357]
_cell_length_c [8.2649]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.2242]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sm2Y(ErAs2)3]
_chemical_formula_sum '[Sm4 Y2 Er6 As12]'
_cell_volume [599.4230]
_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
[
  Sm  Sm0  4  0.1662  0.0000  0.3326  1
  Y  Y1  2  0.0000  0.5000  0.0000  1
  Er  Er2  4  0.1669  0.0000  0.8337  1
  Er  Er3  2  0.0000  0.5000  0.5000  1
  As  As4  4  0.0021  0.0000  0.7492  1
  As  As5  4  0.1649  0.5000  0.5880  1
  As  As6  4  0.1671  0.5000  0.0779  1
]