data_BeCdPt4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.28
_cell_length_b   5.28
_cell_length_c   5.28
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeCdPt4
_chemical_formula_sum   'Be1 Cd1 Pt4'
_cell_volume   104.12
_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
  Be  Be0  1  0.0  0.0  0.0  1.0
  Cd  Cd1  1  0.87  0.87  0.87  1.0
  Pt  Pt2  1  0.8  0.8  0.67  1.0
  Pt  Pt3  1  0.8  0.67  0.8  1.0
  Pt  Pt4  1  0.67  0.8  0.8  1.0
  Pt  Pt5  1  0.67  0.67  0.67  1.0

data_BeCdPt4
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.28
_cell_length_b   5.28
_cell_length_c   12.93
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   BeCdPt4
_chemical_formula_sum   'Be3 Cd3 Pt12'
_cell_volume   312.37
_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
  Be  Be0  3  0.0  0.0  0.0  1.0
  Cd  Cd1  3  0.0  0.0  0.13  1.0
  Pt  Pt2  9  0.09  0.04  0.24  1.0
  Pt  Pt3  3  0.0  0.0  0.33  1.0

Be Cd Pt Pt Pt Pt
Be Cd Pt Pt Pt Pt 0 1 - - - 1 4 o o o 1 3 o o o 1 2 o o o 2 3 o o o 2 4 o o o 2 5 o o o 3 4 o o o 3 5 o o o 4 5 o o o 
BePt4Cd crystallizes in the trigonal R3m space group. Be(1) is bonded in a 4-coordinate geometry to three equivalent Pt(1) and one Cd(1) atom. All Be(1)-Pt(1) bond lengths are 2.89 Å. The Be(1)-Cd(1) bond length is 1.72 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(2) is bonded in a 3-coordinate geometry to three equivalent Pt(1) atoms. All Pt(2)-Pt(1) bond lengths are 1.18 Å. In the second Pt site, Pt(1) is bonded in a 5-coordinate geometry to one Be(1), one Pt(2), two equivalent Pt(1), and one Cd(1) atom. Both Pt(1)-Pt(1) bond lengths are 0.68 Å. The Pt(1)-Cd(1) bond length is 1.49 Å. Cd(1) is bonded in a distorted rectangular see-saw-like geometry to one Be(1) and three equivalent Pt(1) atoms.