data_SiBi2Mo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.35
_cell_length_b   3.35
_cell_length_c   8.26
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiBi2Mo
_chemical_formula_sum   'Si1 Bi2 Mo1'
_cell_volume   92.94
_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
  Si  Si3  1  0.0  0.0  0.62  1.0
  Bi  Bi0  1  0.68  0.68  0.69  1.0
  Bi  Bi1  1  0.0  0.0  0.66  1.0
  Mo  Mo2  1  0.68  0.68  0.68  1.0

data_SiBi2Mo
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.74
_cell_length_b   4.74
_cell_length_c   8.26
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SiBi2Mo
_chemical_formula_sum   'Si2 Bi4 Mo2'
_cell_volume   185.87
_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
  Si  Si0  2  0.0  0.0  0.62  1.0
  Bi  Bi1  2  0.0  0.0  0.66  1.0
  Bi  Bi2  2  0.18  0.5  0.69  1.0
  Mo  Mo3  2  0.18  0.5  0.68  1.0

Si Bi Bi Mo
BiMoBiSi is beta oxygen-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two bismuth;molybdenum molecules and two BiSi clusters. In each BiSi cluster, Si(1) is bonded in a single-bond geometry to one Bi(2) atom. The Si(1)-Bi(2) bond length is 0.32 Å. Bi(2) is bonded in a single-bond geometry to one Si(1) atom.