data_[Na6Sr3Ge3Cl18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Ge  2.0100  1.2500  0.7700
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [7.1260]
_cell_length_b [7.1260]
_cell_length_c [19.0436]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Na2SrGeCl6]
_chemical_formula_sum '[Na6 Sr3 Ge3 Cl18]'
_cell_volume [837.4798]
_cell_formula_units_Z [3]
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
[
  Na  Na0  3  0.0000  0.0000  0.0153  1.0
  Na  Na1  3  0.0000  0.0000  0.5221  1.0
  Sr  Sr2  3  0.0000  0.0000  0.8159  1.0
  Ge  Ge3  3  0.0000  0.0000  0.3225  1.0
  Cl  Cl4  9  0.0147  0.3182  0.9169  1.0
  Cl  Cl5  9  0.0450  0.6707  0.0784  1.0
]