data_Co2SiGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.76
_cell_length_b   2.76
_cell_length_c   6.15
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Co2SiGe
_chemical_formula_sum   'Co2 Si1 Ge1'
_cell_volume   46.68
_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
  Co  Co0  1  0.38  0.38  0.36  1.0
  Co  Co1  1  0.38  0.38  0.79  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  Ge  Ge2  1  0.0  0.0  0.07  1.0

data_Co2SiGe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.9
_cell_length_b   3.9
_cell_length_c   6.15
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Co2SiGe
_chemical_formula_sum   'Co4 Si2 Ge2'
_cell_volume   93.37
_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  0.38  0.0  0.36  1.0
  Co  Co1  2  0.38  0.0  0.79  1.0
  Si  Si2  2  0.0  0.0  0.0  1.0
  Ge  Ge3  2  0.0  0.0  0.07  1.0

Co Co Si Ge
Co Co Si Ge 0 3 o o o 0 3 o + o 0 3 + o o 0 3 + + o 0 2 o o o 0 2 o + o 0 2 + o o 0 0 + o o 0 0 o + o 0 1 o o o 1 3 o o + 1 3 o + + 1 3 + o + 1 2 o o + 1 2 o + + 1 2 + o + 1 2 + + + 1 1 + o o 1 1 o + o 2 3 o o o 
Co2GeSi crystallizes in the monoclinic Cm space group. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to one Co(2), four equivalent Co(1), and four equivalent Ge(1) atoms. The Co(1)-Co(2) bond length is 2.63 Å. All Co(1)-Co(1) bond lengths are 2.76 Å. There are a spread of Co(1)-Ge(1) bond distances ranging from 2.29-3.00 Å. In the second Co site, Co(2) is bonded in a 1-coordinate geometry to one Co(1) and one Si(1) atom. The Co(2)-Si(1) bond length is 1.96 Å. In the third Co site, Co(1) is bonded in a 9-coordinate geometry to one Co(2), four equivalent Co(1), and four equivalent Ge(1) atoms. The Co(1)-Co(2) bond length is 2.63 Å. There are a spread of Co(1)-Ge(1) bond distances ranging from 2.29-3.00 Å. Ge(1) is bonded in a single-bond geometry to four Co(1,1) and one Si(1) atom. The Ge(1)-Si(1) bond length is 0.46 Å. Si(1) is bonded in a single-bond geometry to one Co(2) and one Ge(1) atom.