data_[Mg6Ag6As6]
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
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [4.5220]
_cell_length_b [4.5220]
_cell_length_c [21.6866]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [MgAgAs]
_chemical_formula_sum '[Mg6 Ag6 As6]'
_cell_volume [384.0429]
_cell_formula_units_Z [6]
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  6  0.0000  0.0000  0.3826  1.0
  Ag  Ag1  6  0.0000  0.0000  0.1292  1.0
  As  As2  6  0.0000  0.0000  0.2562  1.0
]