The material structure described by Pb2GeS4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one S(2), one S(3), one S(4), and two equivalent S(1) atoms. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to one S(3), one S(4), and two equivalent S(2) atoms. Ge(1) is bonded in a tetrahedral geometry to one S(1), one S(2), one S(3), and one S(4) atom. There are four inequivalent S sites. In the first S site, S(1) is bonded in a 1-coordinate geometry to two equivalent Pb(1) and one Ge(1) atom. In the second S site, S(2) is bonded in a 4-coordinate geometry to one Pb(1), two equivalent Pb(2), and one Ge(1) atom. In the third S site, S(3) is bonded in a 3-coordinate geometry to one Pb(1), one Pb(2), and one Ge(1) atom. In the fourth S site, S(4) is bonded in a distorted single-bond geometry to one Pb(1), one Pb(2), and one Ge(1) atom. is represented by the CIF file [CIF]
data_Ge(PbS2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.293
_cell_length_b   8.047
_cell_length_c   10.904
_cell_angle_alpha   65.471
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   741.818
_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
  Ge  Ge0  1  0.810  0.283  0.006  1.0
  Ge  Ge1  1  0.310  0.717  0.494  1.0
  Ge  Ge2  1  0.190  0.717  0.994  1.0
  Ge  Ge3  1  0.690  0.283  0.506  1.0
  Pb  Pb4  1  0.549  0.596  0.151  1.0
  Pb  Pb5  1  0.327  0.039  0.661  1.0
  Pb  Pb6  1  0.827  0.961  0.839  1.0
  Pb  Pb7  1  0.673  0.961  0.339  1.0
  Pb  Pb8  1  0.451  0.404  0.849  1.0
  Pb  Pb9  1  0.951  0.596  0.651  1.0
  Pb  Pb10  1  0.049  0.404  0.349  1.0
  Pb  Pb11  1  0.173  0.039  0.161  1.0
  S  S12  1  0.204  0.447  0.598  1.0
  S  S13  1  0.089  0.778  0.796  1.0
  S  S14  1  0.022  0.751  0.127  1.0
  S  S15  1  0.864  0.080  0.557  1.0
  S  S16  1  0.704  0.553  0.902  1.0
  S  S17  1  0.796  0.553  0.402  1.0
  S  S18  1  0.589  0.222  0.704  1.0
  S  S19  1  0.296  0.447  0.098  1.0
  S  S20  1  0.522  0.249  0.373  1.0
  S  S21  1  0.978  0.249  0.873  1.0
  S  S22  1  0.411  0.778  0.296  1.0
  S  S23  1  0.364  0.920  0.943  1.0
  S  S24  1  0.636  0.080  0.057  1.0
  S  S25  1  0.911  0.222  0.204  1.0
  S  S26  1  0.478  0.751  0.627  1.0
  S  S27  1  0.136  0.920  0.443  1.0
[/CIF]
.
The material structure described by Pb2GeS4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one S(2), one S(3), one S(4), and two equivalent S(1) atoms. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to one S(3), one S(4), and two equivalent S(2) atoms. Ge(1) is bonded in a tetrahedral geometry to one S(1), one S(2), one S(3), and one S(4) atom. There are four inequivalent S sites. In the first S site, S(1) is bonded in a 1-coordinate geometry to two equivalent Pb(1) and one Ge(1) atom. In the second S site, S(2) is bonded in a 4-coordinate geometry to one Pb(1), two equivalent Pb(2), and one Ge(1) atom. In the third S site, S(3) is bonded in a 3-coordinate geometry to one Pb(1), one Pb(2), and one Ge(1) atom. In the fourth S site, S(4) is bonded in a distorted single-bond geometry to one Pb(1), one Pb(2), and one Ge(1) atom. is represented by the CIF file [CIF]
data_Ge(PbS2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.293
_cell_length_b   8.047
_cell_length_c   10.904
_cell_angle_alpha   65.471
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   741.818
_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
  Ge  Ge0  1  0.810  0.283  0.006  1.0
  Ge  Ge1  1  0.310  0.717  0.494  1.0
  Ge  Ge2  1  0.190  0.717  0.994  1.0
  Ge  Ge3  1  0.690  0.283  0.506  1.0
  Pb  Pb4  1  0.549  0.596  0.151  1.0
  Pb  Pb5  1  0.327  0.039  0.661  1.0
  Pb  Pb6  1  0.827  0.961  0.839  1.0
  Pb  Pb7  1  0.673  0.961  0.339  1.0
  Pb  Pb8  1  0.451  0.404  0.849  1.0
  Pb  Pb9  1  0.951  0.596  0.651  1.0
  Pb  Pb10  1  0.049  0.404  0.349  1.0
  Pb  Pb11  1  0.173  0.039  0.161  1.0
  S  S12  1  0.204  0.447  0.598  1.0
  S  S13  1  0.089  0.778  0.796  1.0
  S  S14  1  0.022  0.751  0.127  1.0
  S  S15  1  0.864  0.080  0.557  1.0
  S  S16  1  0.704  0.553  0.902  1.0
  S  S17  1  0.796  0.553  0.402  1.0
  S  S18  1  0.589  0.222  0.704  1.0
  S  S19  1  0.296  0.447  0.098  1.0
  S  S20  1  0.522  0.249  0.373  1.0
  S  S21  1  0.978  0.249  0.873  1.0
  S  S22  1  0.411  0.778  0.296  1.0
  S  S23  1  0.364  0.920  0.943  1.0
  S  S24  1  0.636  0.080  0.057  1.0
  S  S25  1  0.911  0.222  0.204  1.0
  S  S26  1  0.478  0.751  0.627  1.0
  S  S27  1  0.136  0.920  0.443  1.0
[/CIF]
.