data_[Ac3Hg6P3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Hg  2.0000  1.5000  1.2450
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [5.5221]
_cell_length_b [5.5221]
_cell_length_c [15.7452]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [AcHg2PO6]
_chemical_formula_sum '[Ac3 Hg6 P3 O18]'
_cell_volume [415.8081]
_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
[
  Ac  Ac0  3  0.0000  -0.0000  0.5000  1
  Hg  Hg1  6  0.0000  0.0000  0.2757  1
  P  P2  3  0.0000  0.0000  0.0000  1
  O  O3  18  0.0416  0.7659  0.0654  1
]