data_Be2CoSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.67
_cell_length_b   3.67
_cell_length_c   3.62
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2CoSn
_chemical_formula_sum   'Be2 Co1 Sn1'
_cell_volume   48.83
_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  Be0  1  0.84  0.0  0.81  1.0
  Be  Be1  1  0.0  0.84  0.81  1.0
  Co  Co2  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.84  0.84  0.0  1.0

data_Be2CoSn
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   3.62
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Be2CoSn
_chemical_formula_sum   'Be4 Co2 Sn2'
_cell_volume   97.65
_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  4  0.42  0.42  0.81  1.0
  Co  Co1  2  0.0  0.0  0.0  1.0
  Sn  Sn2  2  0.34  0.5  -0.0  1.0

Be Be Co Sn
Be Be Co Sn 0 1 + - o 0 3 o - + 0 2 + o + 1 3 - o + 1 2 o + + 2 3 - - o 