data_[Ca2Si2Ge2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Si  1.9000  1.1000  0.5400
  Ge  2.0100  1.2500  0.7700
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [4.9403]
_cell_length_b [4.0367]
_cell_length_c [6.7797]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.7224]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CaSiGe]
_chemical_formula_sum '[Ca2 Si2 Ge2]'
_cell_volume [135.1936]
_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
[
  Ca  Ca0  2  0.0133  0.7500  0.2586  1.0
  Si  Si1  2  0.4154  0.2500  0.4228  1.0
  Ge  Ge2  2  0.3937  0.7500  0.9134  1.0
]