data_BeAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.39
_cell_length_b   3.39
_cell_length_c   6.69
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeAs
_chemical_formula_sum   'Be2 As2'
_cell_volume   66.55
_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  0.69  0.98  0.68  1.0
  Be  Be3  1  0.0  0.96  0.34  1.0
  As  As0  1  0.69  0.98  0.49  1.0
  As  As1  1  0.0  0.96  0.15  1.0

data_BeAs
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.39
_cell_length_b   3.39
_cell_length_c   6.69
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeAs
_chemical_formula_sum   'Be2 As2'
_cell_volume   66.55
_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  1  0.0  0.96  0.34  1.0
  Be  Be1  1  0.69  0.98  0.68  1.0
  As  As2  1  0.0  0.96  0.15  1.0
  As  As3  1  0.69  0.98  0.49  1.0

Be Be As As