data_CrRePb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.46
_cell_length_b   3.46
_cell_length_c   6.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CrRePb2
_chemical_formula_sum   'Cr1 Re1 Pb2'
_cell_volume   82.37
_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
  Re  Re3  1  0.0  0.0  0.43  1.0
  Pb  Pb1  1  0.73  0.73  0.82  1.0
  Pb  Pb2  1  0.73  0.73  0.04  1.0

data_CrRePb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.9
_cell_length_b   4.9
_cell_length_c   6.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CrRePb2
_chemical_formula_sum   'Cr2 Re2 Pb4'
_cell_volume   164.73
_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
  Re  Re1  2  0.0  0.0  0.43  1.0
  Pb  Pb2  2  0.23  0.5  0.04  1.0
  Pb  Pb3  2  0.23  0.5  0.82  1.0

Cr Re Pb Pb
CrRePb2 crystallizes in the monoclinic Cm space group. Cr(1) is bonded in a distorted single-bond geometry to one Re(1), one Pb(2), and three equivalent Pb(1) atoms. The Cr(1)-Re(1) bond length is 2.95 Å. The Cr(1)-Pb(2) bond length is 1.35 Å. There is one shorter (1.82 Å) and two longer (2.98 Å) Cr(1)-Pb(1) bond lengths. Re(1) is bonded in a 3-coordinate geometry to one Cr(1), one Pb(1), and one Pb(2) atom. The Re(1)-Pb(1) bond length is 2.96 Å. The Re(1)-Pb(2) bond length is 2.96 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to three equivalent Cr(1), one Re(1), and one Pb(2) atom. The Pb(1)-Pb(2) bond length is 1.56 Å. In the second Pb site, Pb(2) is bonded in a distorted single-bond geometry to one Cr(1), one Re(1), and one Pb(1) atom.