data_MgPd2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.72
_cell_length_b   4.72
_cell_length_c   4.72
_cell_angle_alpha   120.96
_cell_angle_beta   120.96
_cell_angle_gamma   88.34
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgPd2Pb
_chemical_formula_sum   'Mg1 Pd2 Pb1'
_cell_volume   73.35
_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
  Mg  Mg0  1  0.0  0.0  0.0  1.0
  Pd  Pd2  1  0.0  0.33  0.69  1.0
  Pd  Pd3  1  0.33  0.0  0.69  1.0
  Pb  Pb1  1  0.0  0.0  0.39  1.0

data_MgPd2Pb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.58
_cell_length_b   6.58
_cell_length_c   4.72
_cell_angle_alpha   90.0
_cell_angle_beta   134.17
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   MgPd2Pb
_chemical_formula_sum   'Mg2 Pd4 Pb2'
_cell_volume   146.7
_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
  Mg  Mg0  2  0.0  0.0  0.0  1.0
  Pd  Pd1  4  0.34  0.34  0.37  1.0
  Pb  Pb2  2  0.0  0.0  0.39  1.0

Mg Pd Pd Pb
MgPd2Pb crystallizes in the monoclinic Cm space group. Mg(1) is bonded in a distorted single-bond geometry to four equivalent Pd(1) and one Pb(1) atom. There are two shorter (2.60 Å) and two longer (2.73 Å) Mg(1)-Pd(1) bond lengths. The Mg(1)-Pb(1) bond length is 1.83 Å. Pd(1) is bonded in a 3-coordinate geometry to two equivalent Mg(1) and one Pb(1) atom. The Pd(1)-Pb(1) bond length is 1.48 Å. Pb(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1) and two equivalent Pd(1) atoms.