data_Be2As
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.58
_cell_length_b   7.58
_cell_length_c   7.58
_cell_angle_alpha   155.84
_cell_angle_beta   155.1
_cell_angle_gamma   34.97
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2As
_chemical_formula_sum   'Be4 As2'
_cell_volume   75.0
_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  Be2  1  0.59  0.18  0.49  1.0
  Be  Be3  1  0.0  0.45  0.74  1.0
  Be  Be4  1  0.59  0.18  0.4  1.0
  Be  Be5  1  0.0  0.45  0.84  1.0
  As  As0  1  0.0  0.82  0.48  1.0
  As  As1  1  0.59  0.82  0.75  1.0

data_Be2As
_symmetry_space_group_name_H-M   P-1
_cell_length_a   3.17
_cell_length_b   3.27
_cell_length_c   7.58
_cell_angle_alpha   102.45
_cell_angle_beta   102.08
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   Be2As
_chemical_formula_sum   'Be4 As2'
_cell_volume   75.0
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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  0.37  0.09  0.38  1.0
  Be  Be1  2  0.37  0.99  0.28  1.0
  As  As2  2  0.0  0.36  0.66  1.0

Be Be Be Be As As