data_[Zn6Si3Ag3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Zn  1.6500  1.3500  0.8800
  Si  1.9000  1.1000  0.5400
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [2.7659]
_cell_length_b [2.7659]
_cell_length_c [29.1626]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [Zn2SiAg]
_chemical_formula_sum '[Zn6 Si3 Ag3]'
_cell_volume [193.2148]
_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
[
  Zn  Zn0  3  0.0000  0.0000  0.7516  1
  Zn  Zn1  3  0.0000  0.0000  0.9982  1
  Si  Si2  3  0.0000  0.0000  0.2495  1
  Ag  Ag3  3  0.0000  0.0000  0.5007  1
]