data_CrIr2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.42
_cell_length_b   9.42
_cell_length_c   9.42
_cell_angle_alpha   17.68
_cell_angle_beta   17.68
_cell_angle_gamma   17.68
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CrIr2Pb
_chemical_formula_sum   'Cr1 Ir2 Pb1'
_cell_volume   67.28
_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  0.0  0.0  0.0  1.0
  Ir  Ir1  1  0.0  0.0  0.49  1.0
  Ir  Ir2  1  0.0  0.0  0.31  1.0
  Pb  Pb3  1  0.0  0.0  0.9  1.0

data_CrIr2Pb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.01
_cell_length_b   2.9
_cell_length_c   9.42
_cell_angle_alpha   90.0
_cell_angle_beta   100.22
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CrIr2Pb
_chemical_formula_sum   'Cr2 Ir4 Pb2'
_cell_volume   134.57
_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  2  0.0  0.0  0.0  1.0
  Ir  Ir1  2  0.0  0.0  0.51  1.0
  Ir  Ir2  2  0.0  0.0  0.69  1.0
  Pb  Pb3  2  -0.0  0.0  0.1  1.0

Cr Ir Ir Pb
CrIr2Pb crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two CrIr2Pb clusters. Cr(1) is bonded in a single-bond geometry to one Ir(2) and one Pb(1) atom. The Cr(1)-Ir(2) bond length is 2.96 Å. The Cr(1)-Pb(1) bond length is 0.91 Å. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a single-bond geometry to one Ir(2) atom. The Ir(1)-Ir(2) bond length is 1.66 Å. In the second Ir site, Ir(2) is bonded in a distorted linear geometry to one Cr(1) and one Ir(1) atom. Pb(1) is bonded in a single-bond geometry to one Cr(1) atom.