data_Be2SiPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.36
_cell_length_b   4.36
_cell_length_c   4.36
_cell_angle_alpha   131.7
_cell_angle_beta   131.7
_cell_angle_gamma   70.7
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2SiPt
_chemical_formula_sum   'Be2 Si1 Pt1'
_cell_volume   45.17
_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  0.78  0.0  0.78  1.0
  Be  Be1  1  0.0  0.0  0.0  1.0
  Si  Si3  1  0.0  0.0  0.55  1.0
  Pt  Pt2  1  0.0  0.78  0.78  1.0

data_Be2SiPt
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.57
_cell_length_b   3.57
_cell_length_c   4.36
_cell_angle_alpha   114.15
_cell_angle_beta   114.15
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2SiPt
_chemical_formula_sum   'Be2 Si1 Pt1'
_cell_volume   45.17
_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  0.0  0.0  0.0  1.0
  Be  Be1  1  0.78  0.99  0.99  1.0
  Si  Si2  1  0.55  0.55  0.55  1.0
  Pt  Pt3  1  0.99  0.78  0.99  1.0

Be Be Si Pt
Be Be Si Pt 0 1 + o + 0 2 + o o 1 3 o - - 1 2 o o - 2 3 o - o 