data_[Ac6Si3O3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P3_121]
_cell_length_a [7.2356]
_cell_length_b [7.2356]
_cell_length_c [8.1570]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [152]
_chemical_formula_structural [Ac2SiO]
_chemical_formula_sum '[Ac6 Si3 O3]'
_cell_volume [369.8377]
_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  6  0.1007  0.4078  0.3881  1
  Si  Si1  3  0.0000  0.6438  0.6667  1
  O  O2  3  0.0000  0.5771  0.1667  1
]