data_Cr3Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.53
_cell_length_b   4.53
_cell_length_c   4.53
_cell_angle_alpha   132.7
_cell_angle_beta   132.7
_cell_angle_gamma   69.12
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cr3Pt
_chemical_formula_sum   'Cr3 Pt1'
_cell_volume   49.19
_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
  Cr  Cr0  1  0.82  0.0  0.86  1.0
  Cr  Cr1  1  0.0  0.82  0.86  1.0
  Cr  Cr2  1  0.0  0.0  0.0  1.0
  Pt  Pt3  1  0.0  0.0  0.73  1.0

data_Cr3Pt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.14
_cell_length_b   5.14
_cell_length_c   4.53
_cell_angle_alpha   90.0
_cell_angle_beta   124.56
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Cr3Pt
_chemical_formula_sum   'Cr6 Pt2'
_cell_volume   98.37
_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
  Cr  Cr0  4  0.09  0.09  0.05  1.0
  Cr  Cr1  2  0.0  0.0  0.0  1.0
  Pt  Pt2  2  0.0  0.0  0.73  1.0

Cr Cr Cr Pt
Cr Cr Cr Pt 0 2 + o + 0 3 + o o 1 2 o + + 1 3 o + o 2 3 o o - 
Cr3Pt crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Cr3Pt clusters. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 2-coordinate geometry to one Cr(2) and one Pt(1) atom. The Cr(1)-Cr(2) bond length is 0.61 Å. The Cr(1)-Pt(1) bond length is 1.33 Å. In the second Cr site, Cr(2) is bonded in a 3-coordinate geometry to two equivalent Cr(1) and one Pt(1) atom. The Cr(2)-Pt(1) bond length is 1.23 Å. Pt(1) is bonded in a 3-coordinate geometry to one Cr(2) and two equivalent Cr(1) atoms.