The structure described by ULa10S16 crystallizes in the tetragonal P-4 space group. U(1) is bonded to four equivalent S(3) and four equivalent S(4) atoms to form distorted US8 hexagonal bipyramids that share corners with four equivalent La(1)S8 hexagonal bipyramids, corners with four equivalent La(2)S8 hexagonal bipyramids, edges with four equivalent La(3)S8 hexagonal bipyramids, faces with four equivalent La(1)S8 hexagonal bipyramids, and faces with four equivalent La(2)S8 hexagonal bipyramids. There are three inequivalent La sites. In the first La site, La(1) is bonded to one S(1), one S(3), three equivalent S(2), and three equivalent S(4) atoms to form distorted LaS8 hexagonal bipyramids that share  a cornercorner with one U(1)S8 hexagonal bipyramid, corners with two equivalent La(1)S8 hexagonal bipyramids, corners with two equivalent La(2)S8 hexagonal bipyramids, corners with two equivalent La(3)S8 hexagonal bipyramids, edges with two equivalent La(1)S8 hexagonal bipyramids, edges with two equivalent La(2)S8 hexagonal bipyramids,  a faceface with one U(1)S8 hexagonal bipyramid, faces with two equivalent La(1)S8 hexagonal bipyramids, faces with two equivalent La(2)S8 hexagonal bipyramids, and faces with two equivalent La(3)S8 hexagonal bipyramids. In the second La site, La(2) is bonded to one S(2), one S(4), three equivalent S(1), and three equivalent S(3) atoms to form distorted LaS8 hexagonal bipyramids that share  a cornercorner with one U(1)S8 hexagonal bipyramid, corners with two equivalent La(1)S8 hexagonal bipyramids, corners with two equivalent La(2)S8 hexagonal bipyramids, corners with two equivalent La(3)S8 hexagonal bipyramids, edges with two equivalent La(1)S8 hexagonal bipyramids, edges with two equivalent La(2)S8 hexagonal bipyramids,  a faceface with one U(1)S8 hexagonal bipyramid, faces with two equivalent La(1)S8 hexagonal bipyramids, faces with two equivalent La(2)S8 hexagonal bipyramids, and faces with two equivalent La(3)S8 hexagonal bipyramids. In the third La site, La(3) is bonded to two equivalent S(1), two equivalent S(2), two equivalent S(3), and two equivalent S(4) atoms to form distorted LaS8 hexagonal bipyramids that share corners with four equivalent La(1)S8 hexagonal bipyramids, corners with four equivalent La(2)S8 hexagonal bipyramids, edges with two equivalent U(1)S8 hexagonal bipyramids, faces with four equivalent La(1)S8 hexagonal bipyramids, and faces with four equivalent La(2)S8 hexagonal bipyramids. There are four inequivalent S sites. In the first S site, S(1) is bonded to one La(1), one La(3), and three equivalent La(2) atoms to form SLa5 trigonal bipyramids that share corners with four equivalent S(3)La5U octahedra, corners with four equivalent S(4)La5U octahedra, corners with four equivalent S(2)La5 square pyramids,  a cornercorner with one S(1)La5 trigonal bipyramid,  an edgeedge with one S(3)La5U octahedra, edges with two equivalent S(4)La5U octahedra, edges with two equivalent S(2)La5 square pyramids, edges with three equivalent S(1)La5 trigonal bipyramids, and faces with two equivalent S(3)La5U octahedra. The corner-sharing octahedral tilt angles range from 21-54°. In the second S site, S(2) is bonded to one La(2), one La(3), and three equivalent La(1) atoms to form SLa5 square pyramids that share corners with four equivalent S(3)La5U octahedra, corners with four equivalent S(4)La5U octahedra, corners with four equivalent S(2)La5 square pyramids, corners with four equivalent S(1)La5 trigonal bipyramids,  an edgeedge with one S(4)La5U octahedra, edges with two equivalent S(3)La5U octahedra, edges with two equivalent S(1)La5 trigonal bipyramids, faces with two equivalent S(4)La5U octahedra, and  a faceface with one S(2)La5 square pyramid. The corner-sharing octahedral tilt angles range from 12-53°. In the third S site, S(3) is bonded to one U(1), one La(1), one La(3), and three equivalent La(2) atoms to form distorted SLa5U octahedra that share corners with three equivalent S(3)La5U octahedra, corners with four equivalent S(4)La5U octahedra, corners with four equivalent S(2)La5 square pyramids, corners with four equivalent S(1)La5 trigonal bipyramids,  an edgeedge with one S(4)La5U octahedra, edges with two equivalent S(3)La5U octahedra, edges with two equivalent S(2)La5 square pyramids,  an edgeedge with one S(1)La5 trigonal bipyramid,  a faceface with one S(3)La5U octahedra, faces with two equivalent S(4)La5U octahedra, and faces with two equivalent S(1)La5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 17-50°. In the fourth S site, S(4) is bonded to one U(1), one La(2), one La(3), and three equivalent La(1) atoms to form distorted SLa5U octahedra that share corners with three equivalent S(4)La5U octahedra, corners with four equivalent S(3)La5U octahedra, corners with four equivalent S(2)La5 square pyramids, corners with four equivalent S(1)La5 trigonal bipyramids,  an edgeedge with one S(3)La5U octahedra, edges with two equivalent S(4)La5U octahedra,  an edgeedge with one S(2)La5 square pyramid, edges with two equivalent S(1)La5 trigonal bipyramids,  a faceface with one S(4)La5U octahedra, faces with two equivalent S(3)La5U octahedra, and faces with two equivalent S(2)La5 square pyramids. The corner-sharing octahedral tilt angles range from 14-50°. is represented by the CIF file [CIF]
data_La10US16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.685
_cell_length_b   8.685
_cell_length_c   8.645
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   652.159
_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
  La  La0  1  0.632  0.755  0.379  1.0
  La  La1  1  0.245  0.878  0.137  1.0
  La  La2  1  0.500  0.000  0.750  1.0
  La  La3  1  0.755  0.122  0.137  1.0
  La  La4  1  0.122  0.245  0.863  1.0
  La  La5  1  0.368  0.245  0.379  1.0
  La  La6  1  0.755  0.368  0.621  1.0
  La  La7  1  0.000  0.500  0.250  1.0
  La  La8  1  0.245  0.632  0.621  1.0
  La  La9  1  0.878  0.755  0.863  1.0
  U  U10  1  0.500  0.500  0.000  1.0
  S  S11  1  0.921  0.819  0.188  1.0
  S  S12  1  0.332  0.919  0.457  1.0
  S  S13  1  0.571  0.819  0.050  1.0
  S  S14  1  0.429  0.181  0.050  1.0
  S  S15  1  0.079  0.181  0.188  1.0
  S  S16  1  0.668  0.081  0.457  1.0
  S  S17  1  0.181  0.921  0.812  1.0
  S  S18  1  0.424  0.330  0.707  1.0
  S  S19  1  0.819  0.079  0.812  1.0
  S  S20  1  0.819  0.429  0.950  1.0
  S  S21  1  0.081  0.332  0.543  1.0
  S  S22  1  0.919  0.668  0.543  1.0
  S  S23  1  0.576  0.670  0.707  1.0
  S  S24  1  0.181  0.571  0.950  1.0
  S  S25  1  0.670  0.424  0.293  1.0
  S  S26  1  0.330  0.576  0.293  1.0
[/CIF]
.
The structure described by ULa10S16 crystallizes in the tetragonal P-4 space group. U(1) is bonded to four equivalent S(3) and four equivalent S(4) atoms to form distorted US8 hexagonal bipyramids that share corners with four equivalent La(1)S8 hexagonal bipyramids, corners with four equivalent La(2)S8 hexagonal bipyramids, edges with four equivalent La(3)S8 hexagonal bipyramids, faces with four equivalent La(1)S8 hexagonal bipyramids, and faces with four equivalent La(2)S8 hexagonal bipyramids. There are three inequivalent La sites. In the first La site, La(1) is bonded to one S(1), one S(3), three equivalent S(2), and three equivalent S(4) atoms to form distorted LaS8 hexagonal bipyramids that share  a cornercorner with one U(1)S8 hexagonal bipyramid, corners with two equivalent La(1)S8 hexagonal bipyramids, corners with two equivalent La(2)S8 hexagonal bipyramids, corners with two equivalent La(3)S8 hexagonal bipyramids, edges with two equivalent La(1)S8 hexagonal bipyramids, edges with two equivalent La(2)S8 hexagonal bipyramids,  a faceface with one U(1)S8 hexagonal bipyramid, faces with two equivalent La(1)S8 hexagonal bipyramids, faces with two equivalent La(2)S8 hexagonal bipyramids, and faces with two equivalent La(3)S8 hexagonal bipyramids. In the second La site, La(2) is bonded to one S(2), one S(4), three equivalent S(1), and three equivalent S(3) atoms to form distorted LaS8 hexagonal bipyramids that share  a cornercorner with one U(1)S8 hexagonal bipyramid, corners with two equivalent La(1)S8 hexagonal bipyramids, corners with two equivalent La(2)S8 hexagonal bipyramids, corners with two equivalent La(3)S8 hexagonal bipyramids, edges with two equivalent La(1)S8 hexagonal bipyramids, edges with two equivalent La(2)S8 hexagonal bipyramids,  a faceface with one U(1)S8 hexagonal bipyramid, faces with two equivalent La(1)S8 hexagonal bipyramids, faces with two equivalent La(2)S8 hexagonal bipyramids, and faces with two equivalent La(3)S8 hexagonal bipyramids. In the third La site, La(3) is bonded to two equivalent S(1), two equivalent S(2), two equivalent S(3), and two equivalent S(4) atoms to form distorted LaS8 hexagonal bipyramids that share corners with four equivalent La(1)S8 hexagonal bipyramids, corners with four equivalent La(2)S8 hexagonal bipyramids, edges with two equivalent U(1)S8 hexagonal bipyramids, faces with four equivalent La(1)S8 hexagonal bipyramids, and faces with four equivalent La(2)S8 hexagonal bipyramids. There are four inequivalent S sites. In the first S site, S(1) is bonded to one La(1), one La(3), and three equivalent La(2) atoms to form SLa5 trigonal bipyramids that share corners with four equivalent S(3)La5U octahedra, corners with four equivalent S(4)La5U octahedra, corners with four equivalent S(2)La5 square pyramids,  a cornercorner with one S(1)La5 trigonal bipyramid,  an edgeedge with one S(3)La5U octahedra, edges with two equivalent S(4)La5U octahedra, edges with two equivalent S(2)La5 square pyramids, edges with three equivalent S(1)La5 trigonal bipyramids, and faces with two equivalent S(3)La5U octahedra. The corner-sharing octahedral tilt angles range from 21-54°. In the second S site, S(2) is bonded to one La(2), one La(3), and three equivalent La(1) atoms to form SLa5 square pyramids that share corners with four equivalent S(3)La5U octahedra, corners with four equivalent S(4)La5U octahedra, corners with four equivalent S(2)La5 square pyramids, corners with four equivalent S(1)La5 trigonal bipyramids,  an edgeedge with one S(4)La5U octahedra, edges with two equivalent S(3)La5U octahedra, edges with two equivalent S(1)La5 trigonal bipyramids, faces with two equivalent S(4)La5U octahedra, and  a faceface with one S(2)La5 square pyramid. The corner-sharing octahedral tilt angles range from 12-53°. In the third S site, S(3) is bonded to one U(1), one La(1), one La(3), and three equivalent La(2) atoms to form distorted SLa5U octahedra that share corners with three equivalent S(3)La5U octahedra, corners with four equivalent S(4)La5U octahedra, corners with four equivalent S(2)La5 square pyramids, corners with four equivalent S(1)La5 trigonal bipyramids,  an edgeedge with one S(4)La5U octahedra, edges with two equivalent S(3)La5U octahedra, edges with two equivalent S(2)La5 square pyramids,  an edgeedge with one S(1)La5 trigonal bipyramid,  a faceface with one S(3)La5U octahedra, faces with two equivalent S(4)La5U octahedra, and faces with two equivalent S(1)La5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 17-50°. In the fourth S site, S(4) is bonded to one U(1), one La(2), one La(3), and three equivalent La(1) atoms to form distorted SLa5U octahedra that share corners with three equivalent S(4)La5U octahedra, corners with four equivalent S(3)La5U octahedra, corners with four equivalent S(2)La5 square pyramids, corners with four equivalent S(1)La5 trigonal bipyramids,  an edgeedge with one S(3)La5U octahedra, edges with two equivalent S(4)La5U octahedra,  an edgeedge with one S(2)La5 square pyramid, edges with two equivalent S(1)La5 trigonal bipyramids,  a faceface with one S(4)La5U octahedra, faces with two equivalent S(3)La5U octahedra, and faces with two equivalent S(2)La5 square pyramids. The corner-sharing octahedral tilt angles range from 14-50°. is represented by the CIF file [CIF]
data_La10US16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.685
_cell_length_b   8.685
_cell_length_c   8.645
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   652.159
_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
  La  La0  1  0.632  0.755  0.379  1.0
  La  La1  1  0.245  0.878  0.137  1.0
  La  La2  1  0.500  0.000  0.750  1.0
  La  La3  1  0.755  0.122  0.137  1.0
  La  La4  1  0.122  0.245  0.863  1.0
  La  La5  1  0.368  0.245  0.379  1.0
  La  La6  1  0.755  0.368  0.621  1.0
  La  La7  1  0.000  0.500  0.250  1.0
  La  La8  1  0.245  0.632  0.621  1.0
  La  La9  1  0.878  0.755  0.863  1.0
  U  U10  1  0.500  0.500  0.000  1.0
  S  S11  1  0.921  0.819  0.188  1.0
  S  S12  1  0.332  0.919  0.457  1.0
  S  S13  1  0.571  0.819  0.050  1.0
  S  S14  1  0.429  0.181  0.050  1.0
  S  S15  1  0.079  0.181  0.188  1.0
  S  S16  1  0.668  0.081  0.457  1.0
  S  S17  1  0.181  0.921  0.812  1.0
  S  S18  1  0.424  0.330  0.707  1.0
  S  S19  1  0.819  0.079  0.812  1.0
  S  S20  1  0.819  0.429  0.950  1.0
  S  S21  1  0.081  0.332  0.543  1.0
  S  S22  1  0.919  0.668  0.543  1.0
  S  S23  1  0.576  0.670  0.707  1.0
  S  S24  1  0.181  0.571  0.950  1.0
  S  S25  1  0.670  0.424  0.293  1.0
  S  S26  1  0.330  0.576  0.293  1.0
[/CIF]
.