data_[Sr2Cu6As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Cu  1.9000  1.3500  0.8200
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [19.6635]
_cell_length_b [4.1460]
_cell_length_c [10.6558]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [SrCu3As2]
_chemical_formula_sum '[Sr2 Cu6 As4]'
_cell_volume [868.7048]
_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
[
  Sr  Sr0  2  0.0000  0.0000  0.5179  1
  Cu  Cu1  4  0.0671  0.0000  0.2465  1
  Cu  Cu2  2  0.0000  0.0000  0.7961  1
  As  As3  4  0.1186  0.0000  0.7908  1
]