data_[Ho4Er4Si2F10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ho  1.2300  1.7500  1.0410
  Er  1.2400  1.7500  1.0300
  Si  1.9000  1.1000  0.5400
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [16.1047]
_cell_length_b [3.5585]
_cell_length_c [7.3398]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.0057]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Ho2Er2SiF5]
_chemical_formula_sum '[Ho4 Er4 Si2 F10]'
_cell_volume [409.8429]
_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
[
  Ho  Ho0  4  0.0047  0.0000  0.2653  1
  Er  Er1  4  0.1653  0.5000  0.0988  1
  Si  Si2  2  0.0000  0.5000  0.0000  1
  F  F3  4  0.1698  0.0000  0.2901  1
  F  F4  4  0.1922  0.0000  0.9154  1
  F  F5  2  0.0000  0.5000  0.5000  1
]