data_Cr4AsPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.81
_cell_length_b   4.81
_cell_length_c   4.81
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cr4AsPt
_chemical_formula_sum   'Cr4 As1 Pt1'
_cell_volume   78.48
_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  Cr1  1  0.25  0.25  0.55  1.0
  Cr  Cr2  1  0.25  0.55  0.25  1.0
  Cr  Cr3  1  0.55  0.25  0.25  1.0
  Cr  Cr4  1  0.55  0.55  0.55  1.0
  As  As0  1  0.0  0.0  0.0  1.0
  Pt  Pt5  1  0.1  0.1  0.1  1.0

data_Cr4AsPt
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.81
_cell_length_b   4.81
_cell_length_c   11.77
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Cr4AsPt
_chemical_formula_sum   'Cr12 As3 Pt3'
_cell_volume   235.45
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  9  0.1  0.2  0.65  1.0
  Cr  Cr1  3  0.0  0.0  0.45  1.0
  As  As2  3  0.0  0.0  0.0  1.0
  Pt  Pt3  3  0.0  0.0  0.9  1.0

Cr Cr Cr Cr As Pt
Cr4PtAs crystallizes in the trigonal R3m space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 4-coordinate geometry to two equivalent Cr(1), three equivalent Cr(2), one Pt(1), and one As(1) atom. Both Cr(1)-Cr(1) bond lengths are 1.42 Å. There is one shorter (2.45 Å) and two longer (2.95 Å) Cr(1)-Cr(2) bond lengths. The Cr(1)-Pt(1) bond length is 2.18 Å. The Cr(1)-As(1) bond length is 1.97 Å. In the second Cr site, Cr(2) is bonded in a 15-coordinate geometry to nine equivalent Cr(1), three equivalent Pt(1), and three equivalent As(1) atoms. All Cr(2)-Pt(1) bond lengths are 3.09 Å. All Cr(2)-As(1) bond lengths are 3.12 Å. Pt(1) is bonded in a single-bond geometry to three equivalent Cr(1), three equivalent Cr(2), and one As(1) atom. The Pt(1)-As(1) bond length is 1.15 Å. As(1) is bonded to three equivalent Cr(1), three equivalent Cr(2), and one Pt(1) atom to form distorted corner-sharing AsCr6Pt trigonal pyramids.