The structure described by U5O11 crystallizes in the monoclinic C2/m space group. There are three inequivalent U sites. In the first U site, U(1) is bonded in a 11-coordinate geometry to one O(2), three equivalent O(1), three equivalent O(6), and four equivalent O(5) atoms. In the second U site, U(2) is bonded in a body-centered cubic geometry to one O(1), one O(4), three equivalent O(2), and three equivalent O(3) atoms. In the third U site, U(3) is bonded in a body-centered cubic geometry to two equivalent O(3) and six equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded to one U(2) and three equivalent U(1) atoms to form distorted OU4 tetrahedra that share corners with six equivalent O(6)U6 octahedra,  a cornercorner with one O(4)U4 tetrahedra, corners with three equivalent O(3)U4 tetrahedra, corners with six equivalent O(1)U4 tetrahedra, corners with six equivalent O(5)U4 trigonal pyramids, edges with three equivalent O(2)U4 tetrahedra, edges with three equivalent O(5)U4 trigonal pyramids, and  a faceface with one O(6)U6 octahedra. The corner-sharing octahedral tilt angles range from 51-52°. In the second O site, O(2) is bonded to one U(1) and three equivalent U(2) atoms to form OU4 tetrahedra that share corners with three equivalent O(6)U6 octahedra, corners with three equivalent O(3)U4 tetrahedra, corners with three equivalent O(4)U4 tetrahedra, corners with six equivalent O(2)U4 tetrahedra, corners with four equivalent O(5)U4 trigonal pyramids, edges with three equivalent O(1)U4 tetrahedra, and edges with three equivalent O(3)U4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-58°. In the third O site, O(3) is bonded to one U(3) and three equivalent U(2) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the fourth O site, O(4) is bonded to one U(2) and three equivalent U(3) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the fifth O site, O(5) is bonded to four equivalent U(1) atoms to form OU4 trigonal pyramids that share corners with three equivalent O(6)U6 octahedra, corners with four equivalent O(2)U4 tetrahedra, corners with six equivalent O(1)U4 tetrahedra, corners with six equivalent O(5)U4 trigonal pyramids, edges with three equivalent O(1)U4 tetrahedra, edges with three equivalent O(5)U4 trigonal pyramids, and faces with three equivalent O(6)U6 octahedra. The corner-sharing octahedral tilt angles range from 41-42°. In the sixth O site, O(6) is bonded to six equivalent U(1) atoms to form OU6 octahedra that share corners with six equivalent O(2)U4 tetrahedra, corners with twelve equivalent O(1)U4 tetrahedra, corners with six equivalent O(5)U4 trigonal pyramids, edges with six equivalent O(6)U6 octahedra, faces with two equivalent O(1)U4 tetrahedra, and faces with six equivalent O(5)U4 trigonal pyramids. is represented by the CIF card [CIF]
data_U5O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.834
_cell_length_b   3.834
_cell_length_c   15.728
_cell_angle_alpha   82.987
_cell_angle_beta   82.987
_cell_angle_gamma   60.374
_symmetry_Int_Tables_number   1
_cell_volume   198.916
_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
  U  U0  1  0.297  0.297  0.590  1.0
  U  U1  1  0.896  0.896  0.799  1.0
  U  U2  1  0.500  0.500  0.000  1.0
  U  U3  1  0.104  0.104  0.201  1.0
  U  U4  1  0.703  0.703  0.410  1.0
  O  O5  1  0.938  0.938  0.664  1.0
  O  O6  1  0.242  0.242  0.756  1.0
  O  O7  1  0.545  0.545  0.852  1.0
  O  O8  1  0.849  0.849  0.951  1.0
  O  O9  1  0.758  0.758  0.244  1.0
  O  O10  1  0.151  0.151  0.049  1.0
  O  O11  1  0.455  0.455  0.148  1.0
  O  O12  1  0.357  0.357  0.433  1.0
  O  O13  1  0.062  0.062  0.336  1.0
  O  O14  1  0.000  0.000  0.500  1.0
  O  O15  1  0.643  0.643  0.567  1.0
[/CIF]
.
The structure described by U5O11 crystallizes in the monoclinic C2/m space group. There are three inequivalent U sites. In the first U site, U(1) is bonded in a 11-coordinate geometry to one O(2), three equivalent O(1), three equivalent O(6), and four equivalent O(5) atoms. In the second U site, U(2) is bonded in a body-centered cubic geometry to one O(1), one O(4), three equivalent O(2), and three equivalent O(3) atoms. In the third U site, U(3) is bonded in a body-centered cubic geometry to two equivalent O(3) and six equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded to one U(2) and three equivalent U(1) atoms to form distorted OU4 tetrahedra that share corners with six equivalent O(6)U6 octahedra,  a cornercorner with one O(4)U4 tetrahedra, corners with three equivalent O(3)U4 tetrahedra, corners with six equivalent O(1)U4 tetrahedra, corners with six equivalent O(5)U4 trigonal pyramids, edges with three equivalent O(2)U4 tetrahedra, edges with three equivalent O(5)U4 trigonal pyramids, and  a faceface with one O(6)U6 octahedra. The corner-sharing octahedral tilt angles range from 51-52°. In the second O site, O(2) is bonded to one U(1) and three equivalent U(2) atoms to form OU4 tetrahedra that share corners with three equivalent O(6)U6 octahedra, corners with three equivalent O(3)U4 tetrahedra, corners with three equivalent O(4)U4 tetrahedra, corners with six equivalent O(2)U4 tetrahedra, corners with four equivalent O(5)U4 trigonal pyramids, edges with three equivalent O(1)U4 tetrahedra, and edges with three equivalent O(3)U4 tetrahedra. The corner-sharing octahedral tilt angles range from 57-58°. In the third O site, O(3) is bonded to one U(3) and three equivalent U(2) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the fourth O site, O(4) is bonded to one U(2) and three equivalent U(3) atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the fifth O site, O(5) is bonded to four equivalent U(1) atoms to form OU4 trigonal pyramids that share corners with three equivalent O(6)U6 octahedra, corners with four equivalent O(2)U4 tetrahedra, corners with six equivalent O(1)U4 tetrahedra, corners with six equivalent O(5)U4 trigonal pyramids, edges with three equivalent O(1)U4 tetrahedra, edges with three equivalent O(5)U4 trigonal pyramids, and faces with three equivalent O(6)U6 octahedra. The corner-sharing octahedral tilt angles range from 41-42°. In the sixth O site, O(6) is bonded to six equivalent U(1) atoms to form OU6 octahedra that share corners with six equivalent O(2)U4 tetrahedra, corners with twelve equivalent O(1)U4 tetrahedra, corners with six equivalent O(5)U4 trigonal pyramids, edges with six equivalent O(6)U6 octahedra, faces with two equivalent O(1)U4 tetrahedra, and faces with six equivalent O(5)U4 trigonal pyramids. is represented by the CIF card [CIF]
data_U5O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.834
_cell_length_b   3.834
_cell_length_c   15.728
_cell_angle_alpha   82.987
_cell_angle_beta   82.987
_cell_angle_gamma   60.374
_symmetry_Int_Tables_number   1
_cell_volume   198.916
_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
  U  U0  1  0.297  0.297  0.590  1.0
  U  U1  1  0.896  0.896  0.799  1.0
  U  U2  1  0.500  0.500  0.000  1.0
  U  U3  1  0.104  0.104  0.201  1.0
  U  U4  1  0.703  0.703  0.410  1.0
  O  O5  1  0.938  0.938  0.664  1.0
  O  O6  1  0.242  0.242  0.756  1.0
  O  O7  1  0.545  0.545  0.852  1.0
  O  O8  1  0.849  0.849  0.951  1.0
  O  O9  1  0.758  0.758  0.244  1.0
  O  O10  1  0.151  0.151  0.049  1.0
  O  O11  1  0.455  0.455  0.148  1.0
  O  O12  1  0.357  0.357  0.433  1.0
  O  O13  1  0.062  0.062  0.336  1.0
  O  O14  1  0.000  0.000  0.500  1.0
  O  O15  1  0.643  0.643  0.567  1.0
[/CIF]
.