The structure described by Sr2Pb is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to five equivalent Pb(1) atoms. In the second Sr site, Sr(2) is bonded to four equivalent Pb(1) atoms to form a mixture of corner and edge-sharing SrPb4 tetrahedra. Pb(1) is bonded in a 9-coordinate geometry to four equivalent Sr(2) and five equivalent Sr(1) atoms. is represented by the CIF file [CIF]
data_Sr2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.441
_cell_length_b   8.518
_cell_length_c   10.153
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   470.518
_cell_formula_units_Z   4
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  Sr0  1  0.250  0.480  0.819  1.0
  Sr  Sr1  1  0.750  0.520  0.181  1.0
  Sr  Sr2  1  0.250  0.980  0.681  1.0
  Sr  Sr3  1  0.750  0.020  0.319  1.0
  Sr  Sr4  1  0.750  0.156  0.925  1.0
  Sr  Sr5  1  0.250  0.844  0.075  1.0
  Sr  Sr6  1  0.750  0.656  0.575  1.0
  Sr  Sr7  1  0.250  0.344  0.425  1.0
  Pb  Pb8  1  0.250  0.748  0.396  1.0
  Pb  Pb9  1  0.750  0.252  0.604  1.0
  Pb  Pb10  1  0.250  0.248  0.104  1.0
  Pb  Pb11  1  0.750  0.752  0.896  1.0
[/CIF]
.
The structure described by Sr2Pb is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to five equivalent Pb(1) atoms. In the second Sr site, Sr(2) is bonded to four equivalent Pb(1) atoms to form a mixture of corner and edge-sharing SrPb4 tetrahedra. Pb(1) is bonded in a 9-coordinate geometry to four equivalent Sr(2) and five equivalent Sr(1) atoms. is represented by the CIF file [CIF]
data_Sr2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.441
_cell_length_b   8.518
_cell_length_c   10.153
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   470.518
_cell_formula_units_Z   4
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  Sr0  1  0.250  0.480  0.819  1.0
  Sr  Sr1  1  0.750  0.520  0.181  1.0
  Sr  Sr2  1  0.250  0.980  0.681  1.0
  Sr  Sr3  1  0.750  0.020  0.319  1.0
  Sr  Sr4  1  0.750  0.156  0.925  1.0
  Sr  Sr5  1  0.250  0.844  0.075  1.0
  Sr  Sr6  1  0.750  0.656  0.575  1.0
  Sr  Sr7  1  0.250  0.344  0.425  1.0
  Pb  Pb8  1  0.250  0.748  0.396  1.0
  Pb  Pb9  1  0.750  0.252  0.604  1.0
  Pb  Pb10  1  0.250  0.248  0.104  1.0
  Pb  Pb11  1  0.750  0.752  0.896  1.0
[/CIF]
.