data_[Ag4Sn2Ge4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ag  1.9300  1.6000  1.0867
  Sn  1.9600  1.4500  0.8300
  Ge  2.0100  1.2500  0.7700
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [8.2958]
_cell_length_b [8.2958]
_cell_length_c [3.0032]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Ag2SnGe2]
_chemical_formula_sum '[Ag4 Sn2 Ge4]'
_cell_volume [206.6817]
_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
[
  Ag  Ag0  4  0.1260  0.6260  0.5000  1
  Sn  Sn1  2  0.0000  0.0000  0.0000  1
  Ge  Ge2  4  0.1691  0.3309  0.0000  1
]