The compound described by U2CeS5 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent U sites. In the first U site, U(1) is bonded to one S(1), one S(4), one S(5), two equivalent S(2), and two equivalent S(3) atoms to form distorted edge-sharing US7 pentagonal bipyramids. In the second U site, U(2) is bonded in a 8-coordinate geometry to one S(2), one S(3), two equivalent S(1), two equivalent S(4), and two equivalent S(5) atoms. Ce(1) is bonded in a 8-coordinate geometry to one S(2), one S(3), two equivalent S(1), 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 one U(1), two equivalent U(2), and two equivalent Ce(1) atoms to form SCe2U3 square pyramids that share corners with four equivalent S(4)Ce2U3 square pyramids, corners with four equivalent S(3)CeU3 tetrahedra, corners with five equivalent S(5)Ce2U3 trigonal bipyramids, corners with four equivalent S(2)CeU3 trigonal pyramids,  an edgeedge with one S(4)Ce2U3 square pyramid, edges with two equivalent S(1)Ce2U3 square pyramids,  an edgeedge with one S(3)CeU3 tetrahedra, edges with two equivalent S(5)Ce2U3 trigonal bipyramids,  an edgeedge with one S(2)CeU3 trigonal pyramid, and  a faceface with one S(4)Ce2U3 square pyramid. In the second S site, S(2) is bonded to one U(2), two equivalent U(1), and one Ce(1) atom to form distorted SCeU3 trigonal pyramids that share corners with two equivalent S(4)Ce2U3 square pyramids, corners with four equivalent S(1)Ce2U3 square pyramids, corners with four equivalent S(3)CeU3 tetrahedra, corners with two equivalent S(5)Ce2U3 trigonal bipyramids, corners with two equivalent S(2)CeU3 trigonal pyramids,  an edgeedge with one S(1)Ce2U3 square pyramid, edges with two equivalent S(4)Ce2U3 square pyramids,  an edgeedge with one S(3)CeU3 tetrahedra, and edges with two equivalent S(5)Ce2U3 trigonal bipyramids. In the third S site, S(3) is bonded to one U(2), two equivalent U(1), and one Ce(1) atom to form distorted SCeU3 tetrahedra that share corners with two equivalent S(4)Ce2U3 square pyramids, corners with four equivalent S(1)Ce2U3 square pyramids, corners with two equivalent S(3)CeU3 tetrahedra, corners with two equivalent S(5)Ce2U3 trigonal bipyramids, corners with four equivalent S(2)CeU3 trigonal pyramids,  an edgeedge with one S(1)Ce2U3 square pyramid, edges with two equivalent S(4)Ce2U3 square pyramids, edges with two equivalent S(5)Ce2U3 trigonal bipyramids, and  an edgeedge with one S(2)CeU3 trigonal pyramid. In the fourth S site, S(4) is bonded to one U(1), two equivalent U(2), and two equivalent Ce(1) atoms to form distorted SCe2U3 square pyramids that share corners with four equivalent S(1)Ce2U3 square pyramids, corners with four equivalent S(4)Ce2U3 square pyramids, corners with two equivalent S(3)CeU3 tetrahedra,  a cornercorner with one S(5)Ce2U3 trigonal bipyramid, corners with two equivalent S(2)CeU3 trigonal pyramids,  an edgeedge with one S(1)Ce2U3 square pyramid, edges with two equivalent S(3)CeU3 tetrahedra, edges with four equivalent S(5)Ce2U3 trigonal bipyramids, edges with two equivalent S(2)CeU3 trigonal pyramids, and  a faceface with one S(1)Ce2U3 square pyramid. In the fifth S site, S(5) is bonded to one U(1), two equivalent U(2), and two equivalent Ce(1) atoms to form distorted SCe2U3 trigonal bipyramids that share  a cornercorner with one S(4)Ce2U3 square pyramid, corners with five equivalent S(1)Ce2U3 square pyramids, corners with two equivalent S(3)CeU3 tetrahedra, corners with four equivalent S(5)Ce2U3 trigonal bipyramids, corners with two equivalent S(2)CeU3 trigonal pyramids, edges with two equivalent S(1)Ce2U3 square pyramids, edges with four equivalent S(4)Ce2U3 square pyramids, edges with two equivalent S(3)CeU3 tetrahedra, and edges with two equivalent S(2)CeU3 trigonal pyramids. is represented by the CIF file [CIF]
data_CeU2S5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.519
_cell_length_b   8.124
_cell_length_c   11.905
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   727.185
_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
  Ce  Ce0  1  0.475  1.000  0.823  1.0
  Ce  Ce1  1  0.525  0.500  0.177  1.0
  Ce  Ce2  1  0.975  0.500  0.677  1.0
  Ce  Ce3  1  0.025  1.000  0.323  1.0
  U  U4  1  0.572  0.249  0.491  1.0
  U  U5  1  0.928  0.249  0.991  1.0
  U  U6  1  0.428  0.749  0.509  1.0
  U  U7  1  0.072  0.749  0.009  1.0
  U  U8  1  0.019  0.499  0.322  1.0
  U  U9  1  0.981  0.999  0.678  1.0
  U  U10  1  0.519  0.999  0.178  1.0
  U  U11  1  0.481  0.499  0.822  1.0
  S  S12  1  0.957  0.250  0.499  1.0
  S  S13  1  0.543  0.250  0.999  1.0
  S  S14  1  0.043  0.750  0.501  1.0
  S  S15  1  0.457  0.750  0.001  1.0
  S  S16  1  0.334  0.043  0.595  1.0
  S  S17  1  0.158  0.460  0.099  1.0
  S  S18  1  0.666  0.543  0.405  1.0
  S  S19  1  0.842  0.960  0.901  1.0
  S  S20  1  0.658  0.960  0.401  1.0
  S  S21  1  0.834  0.543  0.905  1.0
  S  S22  1  0.342  0.460  0.599  1.0
  S  S23  1  0.166  0.043  0.095  1.0
  S  S24  1  0.698  0.250  0.715  1.0
  S  S25  1  0.802  0.250  0.215  1.0
  S  S26  1  0.302  0.750  0.285  1.0
  S  S27  1  0.198  0.750  0.785  1.0
  S  S28  1  0.331  0.250  0.313  1.0
  S  S29  1  0.169  0.250  0.813  1.0
  S  S30  1  0.669  0.750  0.687  1.0
  S  S31  1  0.831  0.750  0.187  1.0
[/CIF]
.
The compound described by U2CeS5 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent U sites. In the first U site, U(1) is bonded to one S(1), one S(4), one S(5), two equivalent S(2), and two equivalent S(3) atoms to form distorted edge-sharing US7 pentagonal bipyramids. In the second U site, U(2) is bonded in a 8-coordinate geometry to one S(2), one S(3), two equivalent S(1), two equivalent S(4), and two equivalent S(5) atoms. Ce(1) is bonded in a 8-coordinate geometry to one S(2), one S(3), two equivalent S(1), 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 one U(1), two equivalent U(2), and two equivalent Ce(1) atoms to form SCe2U3 square pyramids that share corners with four equivalent S(4)Ce2U3 square pyramids, corners with four equivalent S(3)CeU3 tetrahedra, corners with five equivalent S(5)Ce2U3 trigonal bipyramids, corners with four equivalent S(2)CeU3 trigonal pyramids,  an edgeedge with one S(4)Ce2U3 square pyramid, edges with two equivalent S(1)Ce2U3 square pyramids,  an edgeedge with one S(3)CeU3 tetrahedra, edges with two equivalent S(5)Ce2U3 trigonal bipyramids,  an edgeedge with one S(2)CeU3 trigonal pyramid, and  a faceface with one S(4)Ce2U3 square pyramid. In the second S site, S(2) is bonded to one U(2), two equivalent U(1), and one Ce(1) atom to form distorted SCeU3 trigonal pyramids that share corners with two equivalent S(4)Ce2U3 square pyramids, corners with four equivalent S(1)Ce2U3 square pyramids, corners with four equivalent S(3)CeU3 tetrahedra, corners with two equivalent S(5)Ce2U3 trigonal bipyramids, corners with two equivalent S(2)CeU3 trigonal pyramids,  an edgeedge with one S(1)Ce2U3 square pyramid, edges with two equivalent S(4)Ce2U3 square pyramids,  an edgeedge with one S(3)CeU3 tetrahedra, and edges with two equivalent S(5)Ce2U3 trigonal bipyramids. In the third S site, S(3) is bonded to one U(2), two equivalent U(1), and one Ce(1) atom to form distorted SCeU3 tetrahedra that share corners with two equivalent S(4)Ce2U3 square pyramids, corners with four equivalent S(1)Ce2U3 square pyramids, corners with two equivalent S(3)CeU3 tetrahedra, corners with two equivalent S(5)Ce2U3 trigonal bipyramids, corners with four equivalent S(2)CeU3 trigonal pyramids,  an edgeedge with one S(1)Ce2U3 square pyramid, edges with two equivalent S(4)Ce2U3 square pyramids, edges with two equivalent S(5)Ce2U3 trigonal bipyramids, and  an edgeedge with one S(2)CeU3 trigonal pyramid. In the fourth S site, S(4) is bonded to one U(1), two equivalent U(2), and two equivalent Ce(1) atoms to form distorted SCe2U3 square pyramids that share corners with four equivalent S(1)Ce2U3 square pyramids, corners with four equivalent S(4)Ce2U3 square pyramids, corners with two equivalent S(3)CeU3 tetrahedra,  a cornercorner with one S(5)Ce2U3 trigonal bipyramid, corners with two equivalent S(2)CeU3 trigonal pyramids,  an edgeedge with one S(1)Ce2U3 square pyramid, edges with two equivalent S(3)CeU3 tetrahedra, edges with four equivalent S(5)Ce2U3 trigonal bipyramids, edges with two equivalent S(2)CeU3 trigonal pyramids, and  a faceface with one S(1)Ce2U3 square pyramid. In the fifth S site, S(5) is bonded to one U(1), two equivalent U(2), and two equivalent Ce(1) atoms to form distorted SCe2U3 trigonal bipyramids that share  a cornercorner with one S(4)Ce2U3 square pyramid, corners with five equivalent S(1)Ce2U3 square pyramids, corners with two equivalent S(3)CeU3 tetrahedra, corners with four equivalent S(5)Ce2U3 trigonal bipyramids, corners with two equivalent S(2)CeU3 trigonal pyramids, edges with two equivalent S(1)Ce2U3 square pyramids, edges with four equivalent S(4)Ce2U3 square pyramids, edges with two equivalent S(3)CeU3 tetrahedra, and edges with two equivalent S(2)CeU3 trigonal pyramids. is represented by the CIF file [CIF]
data_CeU2S5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.519
_cell_length_b   8.124
_cell_length_c   11.905
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   727.185
_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
  Ce  Ce0  1  0.475  1.000  0.823  1.0
  Ce  Ce1  1  0.525  0.500  0.177  1.0
  Ce  Ce2  1  0.975  0.500  0.677  1.0
  Ce  Ce3  1  0.025  1.000  0.323  1.0
  U  U4  1  0.572  0.249  0.491  1.0
  U  U5  1  0.928  0.249  0.991  1.0
  U  U6  1  0.428  0.749  0.509  1.0
  U  U7  1  0.072  0.749  0.009  1.0
  U  U8  1  0.019  0.499  0.322  1.0
  U  U9  1  0.981  0.999  0.678  1.0
  U  U10  1  0.519  0.999  0.178  1.0
  U  U11  1  0.481  0.499  0.822  1.0
  S  S12  1  0.957  0.250  0.499  1.0
  S  S13  1  0.543  0.250  0.999  1.0
  S  S14  1  0.043  0.750  0.501  1.0
  S  S15  1  0.457  0.750  0.001  1.0
  S  S16  1  0.334  0.043  0.595  1.0
  S  S17  1  0.158  0.460  0.099  1.0
  S  S18  1  0.666  0.543  0.405  1.0
  S  S19  1  0.842  0.960  0.901  1.0
  S  S20  1  0.658  0.960  0.401  1.0
  S  S21  1  0.834  0.543  0.905  1.0
  S  S22  1  0.342  0.460  0.599  1.0
  S  S23  1  0.166  0.043  0.095  1.0
  S  S24  1  0.698  0.250  0.715  1.0
  S  S25  1  0.802  0.250  0.215  1.0
  S  S26  1  0.302  0.750  0.285  1.0
  S  S27  1  0.198  0.750  0.785  1.0
  S  S28  1  0.331  0.250  0.313  1.0
  S  S29  1  0.169  0.250  0.813  1.0
  S  S30  1  0.669  0.750  0.687  1.0
  S  S31  1  0.831  0.750  0.187  1.0
[/CIF]
.