data_[Er2Mg14Sn8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Mg  1.3100  1.5000  0.8600
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.4447]
_cell_length_b [5.7142]
_cell_length_c [10.6193]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.2491]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [ErMg7Sn4]
_chemical_formula_sum '[Er2 Mg14 Sn8]'
_cell_volume [624.2104]
_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  2  0.0000  0.0000  0.0000  1
  Mg  Mg1  4  0.0817  0.0000  0.4194  1
  Mg  Mg2  4  0.1864  0.5000  0.9026  1
  Mg  Mg3  4  0.2054  0.5000  0.6416  1
  Mg  Mg4  2  0.0000  0.5000  0.0000  1
  Sn  Sn5  4  0.0991  0.5000  0.3177  1
  Sn  Sn6  4  0.2053  0.0000  0.7725  1
]