data_Co2SiSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.62
_cell_length_b   7.62
_cell_length_c   7.62
_cell_angle_alpha   22.37
_cell_angle_beta   22.37
_cell_angle_gamma   22.37
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Co2SiSn
_chemical_formula_sum   'Co2 Si1 Sn1'
_cell_volume   56.13
_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
  Co  Co0  1  0.0  0.0  0.47  1.0
  Co  Co1  1  0.0  0.0  0.79  1.0
  Si  Si2  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.0  0.0  0.13  1.0

data_Co2SiSn
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.12
_cell_length_b   2.95
_cell_length_c   7.62
_cell_angle_alpha   90.0
_cell_angle_beta   102.94
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Co2SiSn
_chemical_formula_sum   'Co4 Si2 Sn2'
_cell_volume   112.26
_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
  Co  Co0  2  0.0  0.0  0.53  1.0
  Co  Co1  2  0.0  0.0  0.21  1.0
  Si  Si2  2  0.0  0.0  0.0  1.0
  Sn  Sn3  2  0.0  0.0  0.87  1.0

Co Co Si Sn
Co2SnSi crystallizes in the monoclinic Cm space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 8-coordinate geometry to one Co(2), six equivalent Co(1), and one Sn(1) atom. The Co(1)-Co(2) bond length is 2.44 Å. All Co(1)-Co(1) bond lengths are 2.95 Å. The Co(1)-Sn(1) bond length is 2.59 Å. In the second Co site, Co(2) is bonded in a distorted single-bond geometry to one Co(1) and one Si(1) atom. The Co(2)-Si(1) bond length is 1.56 Å. Sn(1) is bonded in a single-bond geometry to one Co(1) and one Si(1) atom. The Sn(1)-Si(1) bond length is 1.02 Å. Si(1) is bonded in a distorted linear geometry to one Co(2) and one Sn(1) atom.