data_Ba2CaTl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.35
_cell_length_b   6.35
_cell_length_c   6.35
_cell_angle_alpha   121.58
_cell_angle_beta   121.58
_cell_angle_gamma   87.29
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ba2CaTl
_chemical_formula_sum   'Ba2 Ca1 Tl1'
_cell_volume   176.55
_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
  Ba  Ba0  1  0.0  0.1  0.3  1.0
  Ba  Ba1  1  0.1  0.0  0.3  1.0
  Ca  Ca2  1  0.0  0.0  0.0  1.0
  Tl  Tl3  1  0.0  0.0  0.6  1.0

data_Ba2CaTl
_symmetry_space_group_name_H-M   Cm
_cell_length_a   8.77
_cell_length_b   8.77
_cell_length_c   6.35
_cell_angle_alpha   90.0
_cell_angle_beta   133.64
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ba2CaTl
_chemical_formula_sum   'Ba4 Ca2 Tl2'
_cell_volume   353.11
_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
  Ba  Ba0  4  0.25  0.45  0.8  1.0
  Ca  Ca1  2  0.0  0.0  0.0  1.0
  Tl  Tl2  2  0.4  0.0  0.4  1.0

Ba Ba Ca Tl