data_SrYPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.85
_cell_length_b   5.85
_cell_length_c   5.85
_cell_angle_alpha   126.15
_cell_angle_beta   126.15
_cell_angle_gamma   79.63
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrYPb2
_chemical_formula_sum   'Sr1 Y1 Pb2'
_cell_volume   125.78
_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  0.0  0.0  0.0  1.0
  Y  Y3  1  0.0  0.0  0.49  1.0
  Pb  Pb0  1  0.0  0.65  0.24  1.0
  Pb  Pb1  1  0.65  0.0  0.24  1.0

data_SrYPb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.49
_cell_length_b   7.49
_cell_length_c   5.85
_cell_angle_alpha   90.0
_cell_angle_beta   129.82
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrYPb2
_chemical_formula_sum   'Sr2 Y2 Pb4'
_cell_volume   251.57
_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
  Sr  Sr0  2  0.0  0.0  0.0  1.0
  Y  Y1  2  0.0  0.0  0.49  1.0
  Pb  Pb2  4  0.18  0.18  0.6  1.0

Sr Y Pb Pb
Sr Y Pb Pb 0 2 o o o 0 2 o - - 0 2 o - o 0 3 - o - 0 3 - o o 0 3 o o o 0 1 o o - 0 1 o o o 1 3 - o o 1 2 o - o 
SrYPb2 crystallizes in the monoclinic Cm space group. Sr(1) is bonded in a 8-coordinate geometry to two equivalent Y(1) and six equivalent Pb(1) atoms. There is one shorter (2.86 Å) and one longer (2.98 Å) Sr(1)-Y(1) bond length. There are a spread of Sr(1)-Pb(1) bond distances ranging from 3.13-3.60 Å. Y(1) is bonded in a water-like geometry to two equivalent Sr(1) and two equivalent Pb(1) atoms. Both Y(1)-Pb(1) bond lengths are 1.68 Å. Pb(1) is bonded in a distorted single-bond geometry to three equivalent Sr(1) and one Y(1) atom.