data_[Y6Mg3Pb3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Mg  1.3100  1.5000  0.8600
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.6653]
_cell_length_b [5.6653]
_cell_length_c [14.8292]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Y2MgPbO6]
_chemical_formula_sum '[Y6 Mg3 Pb3 O18]'
_cell_volume [412.1816]
_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
[
  Y  Y0  3  0.0000  0.0000  0.0292  1.0
  Y  Y1  3  0.0000  0.0000  0.5258  1.0
  Mg  Mg2  3  0.0000  0.0000  0.8101  1.0
  Pb  Pb3  3  0.0000  0.0000  0.3114  1.0
  O  O4  9  0.0216  0.2991  0.9127  1.0
  O  O5  9  0.0223  0.6401  0.0820  1.0
]