data_[Al2Si2P4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Al  1.6100  1.2500  0.6750
  Si  1.9000  1.1000  0.5400
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.8123]
_cell_length_b [2.6286]
_cell_length_c [10.7035]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [AlSiP2]
_chemical_formula_sum '[Al2 Si2 P4]'
_cell_volume [135.3939]
_cell_formula_units_Z [2]
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
[
  Al  Al0  2  0.5000  0.0000  0.9053  1
  Si  Si1  2  0.0000  0.0000  0.6359  1
  P  P2  2  0.0000  0.0000  0.8517  1
  P  P3  2  0.5000  0.0000  0.6034  1
]