data_CuSi2Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.76
_cell_length_b   2.76
_cell_length_c   7.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   92.2
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CuSi2Pt
_chemical_formula_sum   'Cu1 Si2 Pt1'
_cell_volume   55.87
_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
  Cu  Cu0  1  0.0  0.0  0.76  1.0
  Si  Si2  1  0.0  0.0  0.09  1.0
  Si  Si3  1  0.91  0.0  0.42  1.0
  Pt  Pt1  1  0.91  0.0  0.75  1.0

data_CuSi2Pt
_symmetry_space_group_name_H-M   Pm
_cell_length_a   2.76
_cell_length_b   2.76
_cell_length_c   7.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   CuSi2Pt
_chemical_formula_sum   'Cu1 Si2 Pt1'
_cell_volume   55.91
_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
  Si  Si0  1  0.0  0.0  0.09  1.0
  Cu  Cu1  1  0.0  0.0  0.76  1.0
  Si  Si2  1  0.91  0.0  0.42  1.0
  Pt  Pt3  1  0.91  0.0  0.75  1.0

Cu Si Si Pt
PtCuSi2 crystallizes in the monoclinic Pm space group. Pt(1) is bonded in a single-bond geometry to one Cu(1), one Si(1), and one Si(2) atom. The Pt(1)-Cu(1) bond length is 0.26 Å. The Pt(1)-Si(1) bond length is 2.50 Å. The Pt(1)-Si(2) bond length is 2.44 Å. Cu(1) is bonded in a single-bond geometry to one Pt(1) and one Si(1) atom. The Cu(1)-Si(1) bond length is 2.40 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one Pt(1), one Cu(1), one Si(2), and four equivalent Si(1) atoms to form a mixture of distorted corner and edge-sharing SiCuSi5Pt pentagonal bipyramids. The Si(1)-Si(2) bond length is 2.43 Å. All Si(1)-Si(1) bond lengths are 2.76 Å. In the second Si site, Si(2) is bonded in a 6-coordinate geometry to one Pt(1), one Si(1), and four equivalent Si(2) atoms. All Si(2)-Si(2) bond lengths are 2.76 Å.