data_[Be4Co2As2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Be  1.5700  1.0500  0.5900
  Co  1.8800  1.3500  0.7683
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [3.7284]
_cell_length_b [2.6932]
_cell_length_c [9.0958]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Be2CoAs]
_chemical_formula_sum '[Be4 Co2 As2]'
_cell_volume [91.3323]
_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
[
  Be  Be0  2  0.0000  0.0000  0.9158  1
  Be  Be1  2  0.5000  0.0000  0.7911  1
  Co  Co2  2  0.0000  0.0000  0.2236  1
  As  As3  2  0.5000  0.0000  0.0653  1
]