The structure described by U2EuS5 crystallizes in the orthorhombic Pnma space group. 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(4) atoms. Eu(1) is bonded in a 7-coordinate geometry to one S(1), one S(2), one S(3), and four equivalent S(4) atoms. There are four inequivalent S sites. In the first S site, S(1) is bonded to four equivalent U(1) and one Eu(1) atom to form distorted SEuU4 square pyramids that share corners with four equivalent S(1)EuU4 square pyramids, corners with four equivalent S(3)EuU4 square pyramids,  a cornercorner with one S(2)EuU4 trigonal bipyramid, corners with four equivalent S(4)Eu2U2 trigonal pyramids,  an edgeedge with one S(3)EuU4 square pyramid, edges with four equivalent S(2)EuU4 trigonal bipyramids, edges with four equivalent S(4)Eu2U2 trigonal pyramids, and  a faceface with one S(3)EuU4 square pyramid. In the second S site, S(2) is bonded to four equivalent U(1) and one Eu(1) atom to form distorted SEuU4 trigonal bipyramids that share  a cornercorner with one S(1)EuU4 square pyramid, corners with five equivalent S(3)EuU4 square pyramids, corners with four equivalent S(2)EuU4 trigonal bipyramids, corners with four equivalent S(4)Eu2U2 trigonal pyramids, edges with two equivalent S(3)EuU4 square pyramids, edges with four equivalent S(1)EuU4 square pyramids, and edges with four equivalent S(4)Eu2U2 trigonal pyramids. In the third S site, S(3) is bonded to four equivalent U(1) and one Eu(1) atom to form SEuU4 square pyramids that share corners with four equivalent S(1)EuU4 square pyramids, corners with five equivalent S(2)EuU4 trigonal bipyramids, corners with eight equivalent S(4)Eu2U2 trigonal pyramids,  an edgeedge with one S(1)EuU4 square pyramid, edges with two equivalent S(3)EuU4 square pyramids, edges with two equivalent S(2)EuU4 trigonal bipyramids, edges with two equivalent S(4)Eu2U2 trigonal pyramids, and  a faceface with one S(1)EuU4 square pyramid. In the fourth S site, S(4) is bonded to two equivalent U(1) and two equivalent Eu(1) atoms to form distorted SEu2U2 trigonal pyramids that share corners with two equivalent S(1)EuU4 square pyramids, corners with four equivalent S(3)EuU4 square pyramids, corners with two equivalent S(2)EuU4 trigonal bipyramids, corners with six equivalent S(4)Eu2U2 trigonal pyramids,  an edgeedge with one S(3)EuU4 square pyramid, edges with two equivalent S(1)EuU4 square pyramids, edges with two equivalent S(2)EuU4 trigonal bipyramids, and  an edgeedge with one S(4)Eu2U2 trigonal pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_EuU2S5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.423
_cell_length_b   7.996
_cell_length_c   12.032
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   714.187
_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
  Eu  Eu0  1  0.924  0.750  0.993  1.0
  Eu  Eu1  1  0.076  0.250  0.007  1.0
  Eu  Eu2  1  0.424  0.250  0.507  1.0
  Eu  Eu3  1  0.576  0.750  0.493  1.0
  U  U4  1  0.987  0.002  0.682  1.0
  U  U5  1  0.013  0.998  0.318  1.0
  U  U6  1  0.487  0.998  0.818  1.0
  U  U7  1  0.013  0.502  0.318  1.0
  U  U8  1  0.513  0.002  0.182  1.0
  U  U9  1  0.987  0.498  0.682  1.0
  U  U10  1  0.513  0.498  0.182  1.0
  U  U11  1  0.487  0.502  0.818  1.0
  S  S12  1  0.705  0.750  0.717  1.0
  S  S13  1  0.295  0.250  0.283  1.0
  S  S14  1  0.205  0.250  0.783  1.0
  S  S15  1  0.795  0.750  0.217  1.0
  S  S16  1  0.176  0.750  0.811  1.0
  S  S17  1  0.824  0.250  0.189  1.0
  S  S18  1  0.676  0.250  0.689  1.0
  S  S19  1  0.324  0.750  0.311  1.0
  S  S20  1  0.528  0.750  0.999  1.0
  S  S21  1  0.472  0.250  0.001  1.0
  S  S22  1  0.028  0.250  0.501  1.0
  S  S23  1  0.972  0.750  0.499  1.0
  S  S24  1  0.830  0.456  0.888  1.0
  S  S25  1  0.170  0.544  0.112  1.0
  S  S26  1  0.330  0.544  0.612  1.0
  S  S27  1  0.170  0.956  0.112  1.0
  S  S28  1  0.670  0.456  0.388  1.0
  S  S29  1  0.830  0.044  0.888  1.0
  S  S30  1  0.670  0.044  0.388  1.0
  S  S31  1  0.330  0.956  0.612  1.0
[/CIF]
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The structure described by U2EuS5 crystallizes in the orthorhombic Pnma space group. 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(4) atoms. Eu(1) is bonded in a 7-coordinate geometry to one S(1), one S(2), one S(3), and four equivalent S(4) atoms. There are four inequivalent S sites. In the first S site, S(1) is bonded to four equivalent U(1) and one Eu(1) atom to form distorted SEuU4 square pyramids that share corners with four equivalent S(1)EuU4 square pyramids, corners with four equivalent S(3)EuU4 square pyramids,  a cornercorner with one S(2)EuU4 trigonal bipyramid, corners with four equivalent S(4)Eu2U2 trigonal pyramids,  an edgeedge with one S(3)EuU4 square pyramid, edges with four equivalent S(2)EuU4 trigonal bipyramids, edges with four equivalent S(4)Eu2U2 trigonal pyramids, and  a faceface with one S(3)EuU4 square pyramid. In the second S site, S(2) is bonded to four equivalent U(1) and one Eu(1) atom to form distorted SEuU4 trigonal bipyramids that share  a cornercorner with one S(1)EuU4 square pyramid, corners with five equivalent S(3)EuU4 square pyramids, corners with four equivalent S(2)EuU4 trigonal bipyramids, corners with four equivalent S(4)Eu2U2 trigonal pyramids, edges with two equivalent S(3)EuU4 square pyramids, edges with four equivalent S(1)EuU4 square pyramids, and edges with four equivalent S(4)Eu2U2 trigonal pyramids. In the third S site, S(3) is bonded to four equivalent U(1) and one Eu(1) atom to form SEuU4 square pyramids that share corners with four equivalent S(1)EuU4 square pyramids, corners with five equivalent S(2)EuU4 trigonal bipyramids, corners with eight equivalent S(4)Eu2U2 trigonal pyramids,  an edgeedge with one S(1)EuU4 square pyramid, edges with two equivalent S(3)EuU4 square pyramids, edges with two equivalent S(2)EuU4 trigonal bipyramids, edges with two equivalent S(4)Eu2U2 trigonal pyramids, and  a faceface with one S(1)EuU4 square pyramid. In the fourth S site, S(4) is bonded to two equivalent U(1) and two equivalent Eu(1) atoms to form distorted SEu2U2 trigonal pyramids that share corners with two equivalent S(1)EuU4 square pyramids, corners with four equivalent S(3)EuU4 square pyramids, corners with two equivalent S(2)EuU4 trigonal bipyramids, corners with six equivalent S(4)Eu2U2 trigonal pyramids,  an edgeedge with one S(3)EuU4 square pyramid, edges with two equivalent S(1)EuU4 square pyramids, edges with two equivalent S(2)EuU4 trigonal bipyramids, and  an edgeedge with one S(4)Eu2U2 trigonal pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_EuU2S5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.423
_cell_length_b   7.996
_cell_length_c   12.032
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   714.187
_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
  Eu  Eu0  1  0.924  0.750  0.993  1.0
  Eu  Eu1  1  0.076  0.250  0.007  1.0
  Eu  Eu2  1  0.424  0.250  0.507  1.0
  Eu  Eu3  1  0.576  0.750  0.493  1.0
  U  U4  1  0.987  0.002  0.682  1.0
  U  U5  1  0.013  0.998  0.318  1.0
  U  U6  1  0.487  0.998  0.818  1.0
  U  U7  1  0.013  0.502  0.318  1.0
  U  U8  1  0.513  0.002  0.182  1.0
  U  U9  1  0.987  0.498  0.682  1.0
  U  U10  1  0.513  0.498  0.182  1.0
  U  U11  1  0.487  0.502  0.818  1.0
  S  S12  1  0.705  0.750  0.717  1.0
  S  S13  1  0.295  0.250  0.283  1.0
  S  S14  1  0.205  0.250  0.783  1.0
  S  S15  1  0.795  0.750  0.217  1.0
  S  S16  1  0.176  0.750  0.811  1.0
  S  S17  1  0.824  0.250  0.189  1.0
  S  S18  1  0.676  0.250  0.689  1.0
  S  S19  1  0.324  0.750  0.311  1.0
  S  S20  1  0.528  0.750  0.999  1.0
  S  S21  1  0.472  0.250  0.001  1.0
  S  S22  1  0.028  0.250  0.501  1.0
  S  S23  1  0.972  0.750  0.499  1.0
  S  S24  1  0.830  0.456  0.888  1.0
  S  S25  1  0.170  0.544  0.112  1.0
  S  S26  1  0.330  0.544  0.612  1.0
  S  S27  1  0.170  0.956  0.112  1.0
  S  S28  1  0.670  0.456  0.388  1.0
  S  S29  1  0.830  0.044  0.888  1.0
  S  S30  1  0.670  0.044  0.388  1.0
  S  S31  1  0.330  0.956  0.612  1.0
[/CIF]
.