data_[Rb2Cu2Ag2As2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Cu  1.9000  1.3500  0.8200
  Ag  1.9300  1.6000  1.0867
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [4.4734]
_cell_length_b [4.8534]
_cell_length_c [11.4390]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [RbCuAgAs]
_chemical_formula_sum '[Rb2 Cu2 Ag2 As2]'
_cell_volume [248.3528]
_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
[
  Rb  Rb0  2  0.0000  0.0000  0.9676  1
  Cu  Cu1  2  0.0000  0.0000  0.6628  1
  Ag  Ag2  2  0.0000  0.0000  0.2736  1
  As  As3  2  0.0000  0.5000  0.2113  1
]