data_Sr2SiBi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.84
_cell_length_b   5.84
_cell_length_c   3.76
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   102.58
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2SiBi
_chemical_formula_sum   'Sr2 Si1 Bi1'
_cell_volume   124.88
_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  Sr2  1  0.82  0.72  0.88  1.0
  Sr  Sr3  1  0.82  0.28  0.88  1.0
  Si  Si1  1  0.0  0.0  0.0  1.0
  Bi  Bi0  1  0.65  0.0  0.0  1.0

data_Sr2SiBi
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.76
_cell_length_b   5.84
_cell_length_c   5.84
_cell_angle_alpha   102.58
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2SiBi
_chemical_formula_sum   'Sr2 Si1 Bi1'
_cell_volume   124.88
_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  Sr0  1  0.88  0.82  0.28  1.0
  Sr  Sr1  1  0.88  0.82  0.72  1.0
  Si  Si2  1  0.0  0.0  0.0  1.0
  Bi  Bi3  1  -0.0  0.65  0.0  1.0

Sr Sr Si Bi
Sr2SiBi crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Sr2SiBi cluster. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 2-coordinate geometry to one Si(1) and one Bi(1) atom. The Sr(1)-Si(1) bond length is 1.77 Å. The Sr(1)-Bi(1) bond length is 2.14 Å. In the second Sr site, Sr(2) is bonded in a 2-coordinate geometry to one Si(1) and one Bi(1) atom. The Sr(2)-Si(1) bond length is 2.14 Å. The Sr(2)-Bi(1) bond length is 1.77 Å. Si(1) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(2), and one Bi(1) atom. The Si(1)-Bi(1) bond length is 2.05 Å. Bi(1) is bonded in a 3-coordinate geometry to one Sr(1), one Sr(2), and one Si(1) atom.