data_[Mg3Co6Ag6O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Co  1.8800  1.3500  0.7683
  Ag  1.9300  1.6000  1.0867
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [5.2933]
_cell_length_b [5.2933]
_cell_length_c [15.3529]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [MgCo2(AgO3)2]
_chemical_formula_sum '[Mg3 Co6 Ag6 O18]'
_cell_volume [372.5449]
_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
[
  Mg  Mg0  3  0.0000  0.0000  0.0000  1
  Co  Co1  6  0.0000  0.0000  0.1741  1
  Ag  Ag2  6  0.0000  0.0000  0.3680  1
  O  O3  18  0.0115  0.6060  0.5752  1
]