The material structure described by U3Y2O11 is alpha bismuth trifluoride-derived structured and crystallizes in the orthorhombic Immm space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. In the second U site, U(2) is bonded in a body-centered cubic geometry to two equivalent O(4), four equivalent O(2), and four equivalent O(3) atoms. Y(1) is bonded in a body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to one U(1) and three equivalent Y(1) atoms to form OY3U tetrahedra that share corners with two equivalent O(4)U6 octahedra, corners with two equivalent O(3)U4 tetrahedra, corners with six equivalent O(2)YU3 tetrahedra, corners with eight equivalent O(1)Y3U tetrahedra, edges with two equivalent O(2)YU3 tetrahedra, and edges with four equivalent O(1)Y3U tetrahedra. The corner-sharing octahedral tilt angles are 56°. In the second O site, O(2) is bonded to one U(2), two equivalent U(1), and one Y(1) atom to form OYU3 tetrahedra that share corners with three equivalent O(4)U6 octahedra, corners with four equivalent O(3)U4 tetrahedra, corners with six equivalent O(1)Y3U tetrahedra, corners with six equivalent O(2)YU3 tetrahedra, edges with two equivalent O(3)U4 tetrahedra, edges with two equivalent O(1)Y3U tetrahedra, edges with two equivalent O(2)YU3 tetrahedra, and  a faceface with one O(4)U6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the third O site, O(3) is bonded to two equivalent U(1) and two equivalent U(2) atoms to form OU4 tetrahedra that share corners with two equivalent O(4)U6 octahedra, corners with four equivalent O(3)U4 tetrahedra, corners with four equivalent O(1)Y3U tetrahedra, corners with eight equivalent O(2)YU3 tetrahedra, edges with two equivalent O(3)U4 tetrahedra, edges with four equivalent O(2)YU3 tetrahedra, and faces with two equivalent O(4)U6 octahedra. The corner-sharing octahedral tilt angles are 58°. In the fourth O site, O(4) is bonded to two equivalent U(2) and four equivalent U(1) atoms to form OU6 octahedra that share corners with two equivalent O(4)U6 octahedra, corners with four equivalent O(3)U4 tetrahedra, corners with eight equivalent O(1)Y3U tetrahedra, corners with twelve equivalent O(2)YU3 tetrahedra, edges with two equivalent O(4)U6 octahedra, faces with four equivalent O(3)U4 tetrahedra, and faces with four equivalent O(2)YU3 tetrahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y2U3O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.963
_cell_length_b   9.963
_cell_length_c   9.963
_cell_angle_alpha   158.109
_cell_angle_beta   148.287
_cell_angle_gamma   38.869
_symmetry_Int_Tables_number   1
_cell_volume   193.533
_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
  Y  Y0  1  0.797  0.797  0.000  1.0
  Y  Y1  1  0.203  0.203  0.000  1.0
  U  U2  1  0.598  0.598  0.000  1.0
  U  U3  1  0.000  0.000  0.000  1.0
  U  U4  1  0.402  0.402  0.000  1.0
  O  O5  1  0.071  0.308  0.763  1.0
  O  O6  1  0.456  0.692  0.763  1.0
  O  O7  1  0.544  0.308  0.237  1.0
  O  O8  1  0.862  0.101  0.762  1.0
  O  O9  1  0.929  0.692  0.237  1.0
  O  O10  1  0.219  0.500  0.719  1.0
  O  O11  1  0.339  0.101  0.238  1.0
  O  O12  1  0.500  0.000  0.500  1.0
  O  O13  1  0.661  0.899  0.762  1.0
  O  O14  1  0.781  0.500  0.281  1.0
  O  O15  1  0.138  0.899  0.238  1.0
[/CIF]
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The material structure described by U3Y2O11 is alpha bismuth trifluoride-derived structured and crystallizes in the orthorhombic Immm space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. In the second U site, U(2) is bonded in a body-centered cubic geometry to two equivalent O(4), four equivalent O(2), and four equivalent O(3) atoms. Y(1) is bonded in a body-centered cubic geometry to two equivalent O(2) and six equivalent O(1) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to one U(1) and three equivalent Y(1) atoms to form OY3U tetrahedra that share corners with two equivalent O(4)U6 octahedra, corners with two equivalent O(3)U4 tetrahedra, corners with six equivalent O(2)YU3 tetrahedra, corners with eight equivalent O(1)Y3U tetrahedra, edges with two equivalent O(2)YU3 tetrahedra, and edges with four equivalent O(1)Y3U tetrahedra. The corner-sharing octahedral tilt angles are 56°. In the second O site, O(2) is bonded to one U(2), two equivalent U(1), and one Y(1) atom to form OYU3 tetrahedra that share corners with three equivalent O(4)U6 octahedra, corners with four equivalent O(3)U4 tetrahedra, corners with six equivalent O(1)Y3U tetrahedra, corners with six equivalent O(2)YU3 tetrahedra, edges with two equivalent O(3)U4 tetrahedra, edges with two equivalent O(1)Y3U tetrahedra, edges with two equivalent O(2)YU3 tetrahedra, and  a faceface with one O(4)U6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the third O site, O(3) is bonded to two equivalent U(1) and two equivalent U(2) atoms to form OU4 tetrahedra that share corners with two equivalent O(4)U6 octahedra, corners with four equivalent O(3)U4 tetrahedra, corners with four equivalent O(1)Y3U tetrahedra, corners with eight equivalent O(2)YU3 tetrahedra, edges with two equivalent O(3)U4 tetrahedra, edges with four equivalent O(2)YU3 tetrahedra, and faces with two equivalent O(4)U6 octahedra. The corner-sharing octahedral tilt angles are 58°. In the fourth O site, O(4) is bonded to two equivalent U(2) and four equivalent U(1) atoms to form OU6 octahedra that share corners with two equivalent O(4)U6 octahedra, corners with four equivalent O(3)U4 tetrahedra, corners with eight equivalent O(1)Y3U tetrahedra, corners with twelve equivalent O(2)YU3 tetrahedra, edges with two equivalent O(4)U6 octahedra, faces with four equivalent O(3)U4 tetrahedra, and faces with four equivalent O(2)YU3 tetrahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y2U3O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.963
_cell_length_b   9.963
_cell_length_c   9.963
_cell_angle_alpha   158.109
_cell_angle_beta   148.287
_cell_angle_gamma   38.869
_symmetry_Int_Tables_number   1
_cell_volume   193.533
_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
  Y  Y0  1  0.797  0.797  0.000  1.0
  Y  Y1  1  0.203  0.203  0.000  1.0
  U  U2  1  0.598  0.598  0.000  1.0
  U  U3  1  0.000  0.000  0.000  1.0
  U  U4  1  0.402  0.402  0.000  1.0
  O  O5  1  0.071  0.308  0.763  1.0
  O  O6  1  0.456  0.692  0.763  1.0
  O  O7  1  0.544  0.308  0.237  1.0
  O  O8  1  0.862  0.101  0.762  1.0
  O  O9  1  0.929  0.692  0.237  1.0
  O  O10  1  0.219  0.500  0.719  1.0
  O  O11  1  0.339  0.101  0.238  1.0
  O  O12  1  0.500  0.000  0.500  1.0
  O  O13  1  0.661  0.899  0.762  1.0
  O  O14  1  0.781  0.500  0.281  1.0
  O  O15  1  0.138  0.899  0.238  1.0
[/CIF]
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