data_BaSrBi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.91
_cell_length_b   4.91
_cell_length_c   6.98
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BaSrBi2
_chemical_formula_sum   'Ba1 Sr1 Bi2'
_cell_volume   168.68
_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  0.46  0.46  0.0  1.0
  Sr  Sr3  1  0.0  0.0  0.72  1.0
  Bi  Bi1  1  0.0  0.0  0.26  1.0
  Bi  Bi2  1  0.46  0.46  0.48  1.0

data_BaSrBi2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.95
_cell_length_b   6.95
_cell_length_c   6.98
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BaSrBi2
_chemical_formula_sum   'Ba2 Sr2 Bi4'
_cell_volume   337.36
_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  2  0.46  0.0  0.0  1.0
  Sr  Sr1  2  0.0  0.0  0.72  1.0
  Bi  Bi2  2  0.0  0.0  0.26  1.0
  Bi  Bi3  2  0.46  0.0  0.48  1.0

Ba Sr Bi Bi
BaSrBi2 crystallizes in the monoclinic Cm space group. Ba(1) is bonded in a 10-coordinate geometry to four equivalent Sr(1), two equivalent Bi(2), and four equivalent Bi(1) atoms. There are a spread of Ba(1)-Sr(1) bond distances ranging from 3.76-4.27 Å. There is one shorter (3.37 Å) and one longer (3.62 Å) Ba(1)-Bi(2) bond length. There are a spread of Ba(1)-Bi(1) bond distances ranging from 3.64-4.17 Å. Sr(1) is bonded in a 5-coordinate geometry to four equivalent Ba(1), two equivalent Bi(1), and three equivalent Bi(2) atoms. There is one shorter (3.20 Å) and one longer (3.79 Å) Sr(1)-Bi(1) bond length. There is one shorter (3.56 Å) and two longer (3.84 Å) Sr(1)-Bi(2) bond lengths. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to four equivalent Ba(1), two equivalent Sr(1), and one Bi(2) atom. The Bi(1)-Bi(2) bond length is 3.55 Å. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to two equivalent Ba(1), three equivalent Sr(1), and one Bi(1) atom.