data_CoSn2Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.59
_cell_length_b   4.59
_cell_length_c   3.32
_cell_angle_alpha   91.52
_cell_angle_beta   91.52
_cell_angle_gamma   91.04
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CoSn2Pt
_chemical_formula_sum   'Co1 Sn2 Pt1'
_cell_volume   69.96
_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
  Sn  Sn2  1  0.55  0.64  0.66  1.0
  Sn  Sn3  1  0.55  0.36  0.66  1.0
  Pt  Pt1  1  0.22  0.0  0.0  1.0

data_CoSn2Pt
_symmetry_space_group_name_H-M   Pm
_cell_length_a   3.32
_cell_length_b   4.59
_cell_length_c   4.59
_cell_angle_alpha   90.0
_cell_angle_beta   91.52
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   CoSn2Pt
_chemical_formula_sum   'Co1 Sn2 Pt1'
_cell_volume   69.99
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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
  Sn  Sn1  2  0.66  0.36  0.55  1.0
  Pt  Pt2  1  0.0  0.0  0.22  1.0

Co Sn Sn Pt
Co Sn Sn Pt 0 3 o o o 1 2 o o o 
CoPtSn2 crystallizes in the monoclinic Pm space group. Co(1) is bonded in a single-bond geometry to one Pt(1) and two equivalent Sn(1) atoms. The Co(1)-Pt(1) bond length is 1.00 Å. Both Co(1)-Sn(1) bond lengths are 2.87 Å. Pt(1) is bonded in a distorted single-bond geometry to one Co(1) and four equivalent Sn(1) atoms. There are two shorter (2.53 Å) and two longer (3.10 Å) Pt(1)-Sn(1) bond lengths. Sn(1) is bonded in a 4-coordinate geometry to one Co(1), two equivalent Pt(1), and one Sn(1) atom. The Sn(1)-Sn(1) bond length is 1.27 Å.