data_Sr2MnPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.59
_cell_length_b   5.59
_cell_length_c   4.21
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2MnPb
_chemical_formula_sum   'Sr2 Mn1 Pb1'
_cell_volume   131.68
_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
  Sr  Sr2  1  0.8  0.0  0.1  1.0
  Sr  Sr3  1  0.0  0.8  0.1  1.0
  Mn  Mn0  1  0.0  0.0  0.0  1.0
  Pb  Pb1  1  0.8  0.8  0.0  1.0

data_Sr2MnPb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.91
_cell_length_b   7.91
_cell_length_c   4.21
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sr2MnPb
_chemical_formula_sum   'Sr4 Mn2 Pb2'
_cell_volume   263.36
_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
  Sr  Sr0  4  0.4  0.4  0.1  1.0
  Mn  Mn1  2  0.0  0.0  0.0  1.0
  Pb  Pb2  2  0.3  0.5  0.0  1.0

Sr Sr Mn Pb
Sr Sr Mn Pb 0 3 o - o 0 2 + o o 1 3 - o o 1 2 o + o 
Sr2MnPb crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Sr2MnPb clusters. Sr(1) is bonded in an L-shaped geometry to one Mn(1) and one Pb(1) atom. The Sr(1)-Mn(1) bond length is 1.22 Å. The Sr(1)-Pb(1) bond length is 1.22 Å. Mn(1) is bonded in a distorted L-shaped geometry to two equivalent Sr(1) atoms. Pb(1) is bonded in a distorted L-shaped geometry to two equivalent Sr(1) atoms.