data_BaCoPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.26
_cell_length_b   5.26
_cell_length_c   5.26
_cell_angle_alpha   130.86
_cell_angle_beta   130.86
_cell_angle_gamma   72.03
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BaCoPt2
_chemical_formula_sum   'Ba1 Co1 Pt2'
_cell_volume   81.42
_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  0.0  0.25  1.0
  Co  Co1  1  0.0  0.0  0.0  1.0
  Pt  Pt2  1  0.19  0.0  0.13  1.0
  Pt  Pt3  1  0.0  0.19  0.13  1.0

data_BaCoPt2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.19
_cell_length_b   6.19
_cell_length_c   5.26
_cell_angle_alpha   90.0
_cell_angle_beta   126.02
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BaCoPt2
_chemical_formula_sum   'Ba2 Co2 Pt4'
_cell_volume   162.84
_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
  Ba  Ba0  2  0.0  0.0  0.25  1.0
  Co  Co1  2  0.0  0.0  0.0  1.0
  Pt  Pt2  4  0.41  0.41  0.94  1.0

Ba Co Pt Pt
Ba Co Pt Pt 0 3 o o o 0 2 o o o 0 1 o o o 1 3 o o o 1 2 o o o 
BaCoPt2 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BaCoPt2 clusters. Ba(1) is bonded in a 3-coordinate geometry to one Co(1) and two equivalent Pt(1) atoms. The Ba(1)-Co(1) bond length is 1.34 Å. Both Ba(1)-Pt(1) bond lengths are 1.51 Å. Co(1) is bonded in a distorted water-like geometry to one Ba(1) and two equivalent Pt(1) atoms. Both Co(1)-Pt(1) bond lengths are 0.75 Å. Pt(1) is bonded in a distorted single-bond geometry to one Ba(1) and one Co(1) atom.