data_[Ac1Si1As1]
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
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [P-6m2]
_cell_length_a [4.4777]
_cell_length_b [4.4777]
_cell_length_c [4.3858]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [187]
_chemical_formula_structural [AcSiAs]
_chemical_formula_sum '[Ac1 Si1 As1]'
_cell_volume [76.1524]
_cell_formula_units_Z [1]
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  1  0.3333  0.6667  0.0000  1
  Si  Si1  1  0.6667  0.3333  0.5000  1
  As  As2  1  0.0000  0.0000  0.5000  1
]