data_[Mg8Ag12Sn4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Ag  1.9300  1.6000  1.0867
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [13.6052]
_cell_length_b [6.0648]
_cell_length_c [6.1093]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.5501]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Mg2Ag3Sn]
_chemical_formula_sum '[Mg8 Ag12 Sn4]'
_cell_volume [492.0484]
_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
[
  Mg  Mg0  8  0.1721  0.4920  0.5911  1
  Ag  Ag1  8  0.1493  0.0027  0.0715  1
  Ag  Ag2  4  0.0000  0.2615  0.7500  1
  Sn  Sn3  4  0.0000  0.2652  0.2500  1
]