data_Be2AsCl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.53
_cell_length_b   3.53
_cell_length_c   4.68
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2AsCl
_chemical_formula_sum   'Be2 As1 Cl1'
_cell_volume   58.47
_cell_formula_units_Z   1
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  Be1  1  0.0  0.0  0.24  1.0
  Be  Be2  1  0.77  0.77  0.72  1.0
  As  As0  1  0.77  0.77  0.05  1.0
  Cl  Cl3  1  0.0  0.0  0.69  1.0

data_Be2AsCl
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.0
_cell_length_b   5.0
_cell_length_c   4.68
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Be2AsCl
_chemical_formula_sum   'Be4 As2 Cl2'
_cell_volume   116.95
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  0.0  0.0  0.24  1.0
  Be  Be1  2  0.27  0.5  0.72  1.0
  As  As2  2  0.27  0.5  0.05  1.0
  Cl  Cl3  2  0.0  0.0  0.69  1.0

Be Be As Cl