data_Sr2YBe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.39
_cell_length_b   6.39
_cell_length_c   6.39
_cell_angle_alpha   134.55
_cell_angle_beta   134.55
_cell_angle_gamma   66.23
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2YBe
_chemical_formula_sum   'Sr2 Y1 Be1'
_cell_volume   130.69
_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
  Sr  Sr1  1  0.47  0.0  0.68  1.0
  Sr  Sr2  1  0.0  0.47  0.68  1.0
  Y  Y3  1  0.0  0.0  0.36  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0

data_Sr2YBe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.99
_cell_length_b   6.99
_cell_length_c   6.39
_cell_angle_alpha   90.0
_cell_angle_beta   123.11
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sr2YBe
_chemical_formula_sum   'Sr4 Y2 Be2'
_cell_volume   261.38
_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
  Sr  Sr0  4  0.27  0.27  0.21  1.0
  Y  Y1  2  0.0  0.0  0.36  1.0
  Be  Be2  2  0.0  0.0  0.0  1.0

Sr Sr Y Be