data_CuSi2Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.82
_cell_length_b   2.82
_cell_length_c   7.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CuSi2Pt
_chemical_formula_sum   'Cu1 Si2 Pt1'
_cell_volume   56.39
_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  0.0  1.0
  Si  Si2  1  0.41  0.41  0.36  1.0
  Si  Si3  1  0.41  0.41  0.75  1.0
  Pt  Pt1  1  0.0  0.0  0.55  1.0

data_CuSi2Pt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.98
_cell_length_b   3.98
_cell_length_c   7.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CuSi2Pt
_chemical_formula_sum   'Cu2 Si4 Pt2'
_cell_volume   112.78
_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+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
  Cu  Cu0  2  0.0  0.0  0.0  1.0
  Si  Si1  2  0.41  0.0  0.36  1.0
  Si  Si2  2  0.41  0.0  0.75  1.0
  Pt  Pt3  2  0.0  0.0  0.55  1.0

Cu Si Si Pt
Cu Si Si Pt 0 2 - - - 0 2 - o - 0 2 o - - 0 2 o o - 0 1 - o o 0 1 o - o 0 1 o o o 0 0 + o o 0 0 o + o 0 3 o o - 1 3 o o o 1 3 o + o 1 3 + o o 1 3 + + o 1 1 + o o 1 1 o + o 1 2 o o o 2 3 o o o 2 3 o + o 2 3 + o o 2 3 + + o 2 2 + o o 2 2 o + o 
PtCuSi2 crystallizes in the monoclinic Cm space group. Pt(1) is bonded in a 8-coordinate geometry to four equivalent Si(1) and four equivalent Si(2) atoms. There are a spread of Pt(1)-Si(1) bond distances ranging from 2.14-2.73 Å. There are a spread of Pt(1)-Si(2) bond distances ranging from 2.14-2.73 Å. Cu(1) is bonded in a 9-coordinate geometry to four equivalent Cu(1), one Si(1), and four equivalent Si(2) atoms. All Cu(1)-Cu(1) bond lengths are 2.82 Å. The Cu(1)-Si(1) bond length is 3.01 Å. There are a spread of Cu(1)-Si(2) bond distances ranging from 2.42-2.96 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 4-coordinate geometry to four equivalent Pt(1) and one Cu(1) atom. In the second Si site, Si(2) is bonded in a 3-coordinate geometry to four equivalent Pt(1) and four equivalent Cu(1) atoms.