data_Mn2CrPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.21
_cell_length_b   3.21
_cell_length_c   6.52
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mn2CrPb
_chemical_formula_sum   'Mn2 Cr1 Pb1'
_cell_volume   67.08
_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
  Mn  Mn1  1  0.6  0.6  0.29  1.0
  Mn  Mn2  1  0.6  0.6  0.22  1.0
  Cr  Cr0  1  0.0  0.0  0.0  1.0
  Pb  Pb3  1  0.0  0.0  0.26  1.0

data_Mn2CrPb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.54
_cell_length_b   4.54
_cell_length_c   6.52
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Mn2CrPb
_chemical_formula_sum   'Mn4 Cr2 Pb2'
_cell_volume   134.17
_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
  Mn  Mn0  2  0.1  0.5  0.22  1.0
  Mn  Mn1  2  0.1  0.5  0.29  1.0
  Cr  Cr2  2  0.0  0.0  0.0  1.0
  Pb  Pb3  2  0.0  0.0  0.26  1.0

Mn Mn Cr Pb
Mn Mn Cr Pb 0 1 o o o 0 3 + + o 1 3 + + o 2 3 o o o 
(Mn)2PbCr crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two manganese molecules and two PbCr clusters. In each PbCr cluster, Cr(1) is bonded in a single-bond geometry to one Pb(1) atom. The Cr(1)-Pb(1) bond length is 1.69 Å. Pb(1) is bonded in a 1-coordinate geometry to one Cr(1) atom.