The compound described by U2PbS5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 8-coordinate geometry to two equivalent S(1), two equivalent S(2), two equivalent S(3), and two equivalent S(5) atoms. In the second U site, U(2) is bonded in a 7-coordinate geometry to one S(2), one S(3), one S(5), two equivalent S(1), and two equivalent S(4) atoms. Pb(1) is bonded in a 6-coordinate geometry to one S(2), one S(3), two equivalent S(4), and two equivalent S(5) atoms. There are five inequivalent S sites. In the first S site, S(1) is bonded to two equivalent U(1) and two equivalent U(2) atoms to form distorted SU4 trigonal pyramids that share corners with two equivalent S(3)U3Pb trigonal pyramids, corners with two equivalent S(1)U4 trigonal pyramids, corners with four equivalent S(4)U2Pb2 trigonal pyramids,  an edgeedge with one S(1)U4 trigonal pyramid, and edges with two equivalent S(3)U3Pb trigonal pyramids. In the second S site, S(2) is bonded in a 4-coordinate geometry to one U(2), two equivalent U(1), and one Pb(1) atom. In the third S site, S(3) is bonded to one U(2), two equivalent U(1), and one Pb(1) atom to form distorted SU3Pb trigonal pyramids that share corners with two equivalent S(4)U2Pb2 trigonal pyramids, corners with two equivalent S(3)U3Pb trigonal pyramids, corners with two equivalent S(1)U4 trigonal pyramids,  an edgeedge with one S(4)U2Pb2 trigonal pyramid, and edges with two equivalent S(1)U4 trigonal pyramids. In the fourth S site, S(4) is bonded to two equivalent U(2) and two equivalent Pb(1) atoms to form distorted SU2Pb2 trigonal pyramids that share corners with two equivalent S(4)U2Pb2 trigonal pyramids, corners with two equivalent S(3)U3Pb trigonal pyramids, corners with four equivalent S(1)U4 trigonal pyramids,  an edgeedge with one S(4)U2Pb2 trigonal pyramid, and  an edgeedge with one S(3)U3Pb trigonal pyramid. In the fifth S site, S(5) is bonded in a 3-coordinate geometry to one U(2), two equivalent U(1), and two equivalent Pb(1) atoms. is represented by the CIF file [CIF]
data_U2PbS5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.583
_cell_length_b   8.320
_cell_length_c   11.798
_cell_angle_alpha   89.703
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   744.271
_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
  U  U0  1  0.016  0.498  0.321  1.0
  U  U1  1  0.516  0.502  0.179  1.0
  U  U2  1  0.984  0.502  0.679  1.0
  U  U3  1  0.484  0.498  0.821  1.0
  U  U4  1  0.077  0.745  0.007  1.0
  U  U5  1  0.577  0.255  0.493  1.0
  U  U6  1  0.923  0.255  0.993  1.0
  U  U7  1  0.423  0.745  0.507  1.0
  Pb  Pb8  1  0.995  0.976  0.319  1.0
  Pb  Pb9  1  0.495  0.024  0.181  1.0
  Pb  Pb10  1  0.005  0.024  0.681  1.0
  Pb  Pb11  1  0.505  0.976  0.819  1.0
  S  S12  1  0.158  0.454  0.100  1.0
  S  S13  1  0.658  0.546  0.400  1.0
  S  S14  1  0.842  0.546  0.900  1.0
  S  S15  1  0.342  0.454  0.600  1.0
  S  S16  1  0.456  0.714  1.000  1.0
  S  S17  1  0.956  0.286  0.500  1.0
  S  S18  1  0.544  0.286  0.000  1.0
  S  S19  1  0.044  0.714  0.500  1.0
  S  S20  1  0.340  0.279  0.315  1.0
  S  S21  1  0.840  0.721  0.185  1.0
  S  S22  1  0.660  0.721  0.685  1.0
  S  S23  1  0.160  0.279  0.815  1.0
  S  S24  1  0.657  0.964  0.412  1.0
  S  S25  1  0.157  0.036  0.088  1.0
  S  S26  1  0.343  0.036  0.588  1.0
  S  S27  1  0.843  0.964  0.912  1.0
  S  S28  1  0.302  0.727  0.282  1.0
  S  S29  1  0.802  0.273  0.218  1.0
  S  S30  1  0.698  0.273  0.718  1.0
  S  S31  1  0.198  0.727  0.782  1.0
[/CIF]
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The compound described by U2PbS5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 8-coordinate geometry to two equivalent S(1), two equivalent S(2), two equivalent S(3), and two equivalent S(5) atoms. In the second U site, U(2) is bonded in a 7-coordinate geometry to one S(2), one S(3), one S(5), two equivalent S(1), and two equivalent S(4) atoms. Pb(1) is bonded in a 6-coordinate geometry to one S(2), one S(3), two equivalent S(4), and two equivalent S(5) atoms. There are five inequivalent S sites. In the first S site, S(1) is bonded to two equivalent U(1) and two equivalent U(2) atoms to form distorted SU4 trigonal pyramids that share corners with two equivalent S(3)U3Pb trigonal pyramids, corners with two equivalent S(1)U4 trigonal pyramids, corners with four equivalent S(4)U2Pb2 trigonal pyramids,  an edgeedge with one S(1)U4 trigonal pyramid, and edges with two equivalent S(3)U3Pb trigonal pyramids. In the second S site, S(2) is bonded in a 4-coordinate geometry to one U(2), two equivalent U(1), and one Pb(1) atom. In the third S site, S(3) is bonded to one U(2), two equivalent U(1), and one Pb(1) atom to form distorted SU3Pb trigonal pyramids that share corners with two equivalent S(4)U2Pb2 trigonal pyramids, corners with two equivalent S(3)U3Pb trigonal pyramids, corners with two equivalent S(1)U4 trigonal pyramids,  an edgeedge with one S(4)U2Pb2 trigonal pyramid, and edges with two equivalent S(1)U4 trigonal pyramids. In the fourth S site, S(4) is bonded to two equivalent U(2) and two equivalent Pb(1) atoms to form distorted SU2Pb2 trigonal pyramids that share corners with two equivalent S(4)U2Pb2 trigonal pyramids, corners with two equivalent S(3)U3Pb trigonal pyramids, corners with four equivalent S(1)U4 trigonal pyramids,  an edgeedge with one S(4)U2Pb2 trigonal pyramid, and  an edgeedge with one S(3)U3Pb trigonal pyramid. In the fifth S site, S(5) is bonded in a 3-coordinate geometry to one U(2), two equivalent U(1), and two equivalent Pb(1) atoms. is represented by the CIF file [CIF]
data_U2PbS5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.583
_cell_length_b   8.320
_cell_length_c   11.798
_cell_angle_alpha   89.703
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   744.271
_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
  U  U0  1  0.016  0.498  0.321  1.0
  U  U1  1  0.516  0.502  0.179  1.0
  U  U2  1  0.984  0.502  0.679  1.0
  U  U3  1  0.484  0.498  0.821  1.0
  U  U4  1  0.077  0.745  0.007  1.0
  U  U5  1  0.577  0.255  0.493  1.0
  U  U6  1  0.923  0.255  0.993  1.0
  U  U7  1  0.423  0.745  0.507  1.0
  Pb  Pb8  1  0.995  0.976  0.319  1.0
  Pb  Pb9  1  0.495  0.024  0.181  1.0
  Pb  Pb10  1  0.005  0.024  0.681  1.0
  Pb  Pb11  1  0.505  0.976  0.819  1.0
  S  S12  1  0.158  0.454  0.100  1.0
  S  S13  1  0.658  0.546  0.400  1.0
  S  S14  1  0.842  0.546  0.900  1.0
  S  S15  1  0.342  0.454  0.600  1.0
  S  S16  1  0.456  0.714  1.000  1.0
  S  S17  1  0.956  0.286  0.500  1.0
  S  S18  1  0.544  0.286  0.000  1.0
  S  S19  1  0.044  0.714  0.500  1.0
  S  S20  1  0.340  0.279  0.315  1.0
  S  S21  1  0.840  0.721  0.185  1.0
  S  S22  1  0.660  0.721  0.685  1.0
  S  S23  1  0.160  0.279  0.815  1.0
  S  S24  1  0.657  0.964  0.412  1.0
  S  S25  1  0.157  0.036  0.088  1.0
  S  S26  1  0.343  0.036  0.588  1.0
  S  S27  1  0.843  0.964  0.912  1.0
  S  S28  1  0.302  0.727  0.282  1.0
  S  S29  1  0.802  0.273  0.218  1.0
  S  S30  1  0.698  0.273  0.718  1.0
  S  S31  1  0.198  0.727  0.782  1.0
[/CIF]
.