The compound described by U6O11 crystallizes in the monoclinic Cm space group. There are four inequivalent U sites. In the first U site, U(1) is bonded in a body-centered cubic geometry to one O(2), one O(3), one O(4), one O(7), two equivalent O(1), and two equivalent O(5) atoms. In the second U site, U(2) is bonded in a 7-coordinate geometry to one O(1), one O(5), one O(6), two equivalent O(2), and two equivalent O(4) atoms. In the third U site, U(3) is bonded in a 7-coordinate geometry to one O(3), one O(6), one O(7), two equivalent O(2), and two equivalent O(4) atoms. In the fourth U site, U(4) is bonded in a 7-coordinate geometry to one O(3), one O(6), one O(7), two equivalent O(1), and two equivalent O(5) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded to one U(2), one U(4), and two equivalent U(1) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the second O site, O(2) is bonded to one U(1), one U(3), and two equivalent U(2) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the third O site, O(3) is bonded to one U(3), one U(4), and two equivalent U(1) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the fourth O site, O(4) is bonded to one U(1), one U(3), and two equivalent U(2) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the fifth O site, O(5) is bonded to one U(2), one U(4), and two equivalent U(1) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the sixth O site, O(6) is bonded to one U(3), one U(4), and two equivalent U(2) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the seventh O site, O(7) is bonded to one U(3), one U(4), and two equivalent U(1) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_U6O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.662
_cell_length_b   6.662
_cell_length_c   6.664
_cell_angle_alpha   80.411
_cell_angle_beta   80.411
_cell_angle_gamma   119.988
_symmetry_Int_Tables_number   1
_cell_volume   241.535
_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  0.167  0.834  0.498  1.0
  U  U1  1  0.834  0.167  0.498  1.0
  U  U2  1  0.318  0.670  0.997  1.0
  U  U3  1  0.015  0.015  0.996  1.0
  U  U4  1  0.496  0.496  0.515  1.0
  U  U5  1  0.670  0.318  0.997  1.0
  O  O6  1  0.454  0.797  0.625  1.0
  O  O7  1  0.023  0.704  0.887  1.0
  O  O8  1  0.704  0.023  0.887  1.0
  O  O9  1  0.797  0.454  0.625  1.0
  O  O10  1  0.863  0.863  0.365  1.0
  O  O11  1  0.291  0.959  0.126  1.0
  O  O12  1  0.228  0.546  0.363  1.0
  O  O13  1  0.386  0.386  0.884  1.0
  O  O14  1  0.546  0.228  0.363  1.0
  O  O15  1  0.959  0.291  0.126  1.0
  O  O16  1  0.124  0.124  0.625  1.0
[/CIF]
.
The compound described by U6O11 crystallizes in the monoclinic Cm space group. There are four inequivalent U sites. In the first U site, U(1) is bonded in a body-centered cubic geometry to one O(2), one O(3), one O(4), one O(7), two equivalent O(1), and two equivalent O(5) atoms. In the second U site, U(2) is bonded in a 7-coordinate geometry to one O(1), one O(5), one O(6), two equivalent O(2), and two equivalent O(4) atoms. In the third U site, U(3) is bonded in a 7-coordinate geometry to one O(3), one O(6), one O(7), two equivalent O(2), and two equivalent O(4) atoms. In the fourth U site, U(4) is bonded in a 7-coordinate geometry to one O(3), one O(6), one O(7), two equivalent O(1), and two equivalent O(5) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded to one U(2), one U(4), and two equivalent U(1) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the second O site, O(2) is bonded to one U(1), one U(3), and two equivalent U(2) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the third O site, O(3) is bonded to one U(3), one U(4), and two equivalent U(1) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the fourth O site, O(4) is bonded to one U(1), one U(3), and two equivalent U(2) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the fifth O site, O(5) is bonded to one U(2), one U(4), and two equivalent U(1) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the sixth O site, O(6) is bonded to one U(3), one U(4), and two equivalent U(2) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. In the seventh O site, O(7) is bonded to one U(3), one U(4), and two equivalent U(1) atoms to form a mixture of corner and edge-sharing OU4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_U6O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.662
_cell_length_b   6.662
_cell_length_c   6.664
_cell_angle_alpha   80.411
_cell_angle_beta   80.411
_cell_angle_gamma   119.988
_symmetry_Int_Tables_number   1
_cell_volume   241.535
_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  0.167  0.834  0.498  1.0
  U  U1  1  0.834  0.167  0.498  1.0
  U  U2  1  0.318  0.670  0.997  1.0
  U  U3  1  0.015  0.015  0.996  1.0
  U  U4  1  0.496  0.496  0.515  1.0
  U  U5  1  0.670  0.318  0.997  1.0
  O  O6  1  0.454  0.797  0.625  1.0
  O  O7  1  0.023  0.704  0.887  1.0
  O  O8  1  0.704  0.023  0.887  1.0
  O  O9  1  0.797  0.454  0.625  1.0
  O  O10  1  0.863  0.863  0.365  1.0
  O  O11  1  0.291  0.959  0.126  1.0
  O  O12  1  0.228  0.546  0.363  1.0
  O  O13  1  0.386  0.386  0.884  1.0
  O  O14  1  0.546  0.228  0.363  1.0
  O  O15  1  0.959  0.291  0.126  1.0
  O  O16  1  0.124  0.124  0.625  1.0
[/CIF]
.