data_[Si2Ag2P4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  Ag  1.9300  1.6000  1.0867
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [3.1797]
_cell_length_b [4.4166]
_cell_length_c [9.3232]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [SiAgP2]
_chemical_formula_sum '[Si2 Ag2 P4]'
_cell_volume [130.9312]
_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
[
  Si  Si0  2  0.0000  0.0000  0.4568  1
  Ag  Ag1  2  0.0000  0.5000  0.2590  1
  P  P2  2  0.0000  0.0000  0.0488  1
  P  P3  2  0.0000  0.5000  0.7354  1
]