data_Sr2TlPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.06
_cell_length_b   4.27
_cell_length_c   8.13
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2TlPb
_chemical_formula_sum   'Sr2 Tl1 Pb1'
_cell_volume   140.93
_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  Sr1  1  0.03  0.14  0.09  1.0
  Sr  Sr2  1  0.03  0.14  0.04  1.0
  Tl  Tl3  1  0.0  0.0  0.0  1.0
  Pb  Pb0  1  0.0  0.0  0.07  1.0

data_Sr2TlPb
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.06
_cell_length_b   4.27
_cell_length_c   8.13
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2TlPb
_chemical_formula_sum   'Sr2 Tl1 Pb1'
_cell_volume   140.93
_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  Sr0  1  0.03  0.14  0.04  1.0
  Sr  Sr1  1  0.03  0.14  0.09  1.0
  Tl  Tl2  1  0.0  0.0  0.0  1.0
  Pb  Pb3  1  0.0  0.0  0.07  1.0

Sr Sr Tl Pb
Sr2TlPb crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Sr2TlPb cluster. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 2-coordinate geometry to one Sr(2) and one Pb(1) atom. The Sr(1)-Sr(2) bond length is 0.43 Å. The Sr(1)-Pb(1) bond length is 0.63 Å. In the second Sr site, Sr(2) is bonded in a distorted single-bond geometry to one Sr(1) and one Pb(1) atom. The Sr(2)-Pb(1) bond length is 0.63 Å. Tl(1) is bonded in a distorted single-bond geometry to one Pb(1) atom. The Tl(1)-Pb(1) bond length is 0.54 Å. Pb(1) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), and one Tl(1) atom.