data_CoCu2Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.74
_cell_length_b   3.74
_cell_length_c   4.0
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CoCu2Sb
_chemical_formula_sum   'Co1 Cu2 Sb1'
_cell_volume   55.89
_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  0.0  1.0
  Cu  Cu1  1  0.0  0.87  1.0  1.0
  Cu  Cu2  1  0.87  0.0  1.0  1.0
  Sb  Sb3  1  0.87  0.87  0.0  1.0

data_CoCu2Sb
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   4.0
_cell_length_b   5.29
_cell_length_c   5.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   CoCu2Sb
_chemical_formula_sum   'Co2 Cu4 Sb2'
_cell_volume   111.78
_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, y, z'
  4  'x, -y, z'
  5  'x, y+1/2, z+1/2'
  6  '-x, -y+1/2, z+1/2'
  7  '-x, y+1/2, z+1/2'
  8  'x, -y+1/2, z+1/2'
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  0.0  1.0
  Cu  Cu1  4  0.0  0.06  0.94  1.0
  Sb  Sb2  2  0.0  0.0  0.87  1.0

Co Cu Cu Sb
CoCu2Sb is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two CoCu2Sb clusters. Co(1) is bonded in an L-shaped geometry to two equivalent Cu(1) atoms. Both Co(1)-Cu(1) bond lengths are 0.49 Å. Cu(1) is bonded in an L-shaped geometry to one Co(1) and one Sb(1) atom. The Cu(1)-Sb(1) bond length is 0.49 Å. Sb(1) is bonded in an L-shaped geometry to two equivalent Cu(1) atoms.