data_Ba5Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.0
_cell_length_b   7.0
_cell_length_c   7.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ba5Co
_chemical_formula_sum   'Ba5 Co1'
_cell_volume   303.33
_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  0.5  0.02  0.0  1.0
  Ba  Ba1  1  0.0  0.04  0.0  1.0
  Ba  Ba2  1  0.25  0.03  0.57  1.0
  Ba  Ba3  1  0.75  0.03  0.57  1.0
  Ba  Ba4  1  0.5  0.0  0.57  1.0
  Co  Co5  1  0.0  0.0  0.0  1.0

data_Ba5Co
_symmetry_space_group_name_H-M   P1
_cell_length_a   7.0
_cell_length_b   7.0
_cell_length_c   7.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ba5Co
_chemical_formula_sum   'Ba5 Co1'
_cell_volume   303.33
_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  -0.0  0.04  -0.0  1.0
  Ba  Ba1  1  0.25  0.03  0.57  1.0
  Ba  Ba2  1  0.5  0.0  0.57  1.0
  Ba  Ba3  1  0.5  0.02  0.0  1.0
  Ba  Ba4  1  0.75  0.03  0.57  1.0
  Co  Co5  1  0.0  0.0  0.0  1.0

Ba Ba Ba Ba Ba Co
Ba5Co is Hg_xSn structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Ba5Co cluster. There are five inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a distorted single-bond geometry to one Co(1) atom. The Ba(1)-Co(1) bond length is 3.44 Å. In the second Ba site, Ba(2) is bonded in a single-bond geometry to one Co(1) atom. The Ba(2)-Co(1) bond length is 0.30 Å. In the third Ba site, Ba(3) is bonded in a 2-coordinate geometry to one Ba(5) and one Co(1) atom. The Ba(3)-Ba(5) bond length is 1.89 Å. The Ba(3)-Co(1) bond length is 3.48 Å. In the fourth Ba site, Ba(4) is bonded in a distorted single-bond geometry to one Ba(5) atom. The Ba(4)-Ba(5) bond length is 1.64 Å. In the fifth Ba site, Ba(5) is bonded in a 2-coordinate geometry to one Ba(3) and one Ba(4) atom. Co(1) is bonded in a single-bond geometry to one Ba(1), one Ba(2), and one Ba(3) atom.