data_[Si2Ni16Ge4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  Ni  1.9100  1.3500  0.7400
  Ge  2.0100  1.2500  0.7700
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.8683]
_cell_length_b [3.7468]
_cell_length_c [5.5762]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.0836]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Si(Ni4Ge)2]
_chemical_formula_sum '[Si2 Ni16 Ge4]'
_cell_volume [254.0778]
_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
[
  Si  Si0  2  0.0000  0.5000  0.0000  1.0
  Ni  Ni1  4  0.0296  0.0000  0.7638  1.0
  Ni  Ni2  4  0.0911  0.5000  0.4474  1.0
  Ni  Ni3  4  0.1648  0.0000  0.2284  1.0
  Ni  Ni4  4  0.1685  0.5000  0.9280  1.0
  Ge  Ge5  4  0.1976  0.0000  0.6707  1.0
]