The crystal structure described by U5CeO12 is Fluorite-derived structured and 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 body-centered cubic geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. In the second U site, U(2) is bonded in a body-centered cubic geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. In the third U site, U(3) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(3), and four equivalent O(2) atoms. Ce(1) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(3), and four equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to one U(3), two equivalent U(1), and one Ce(1) atom to form OCeU3 tetrahedra that share corners with two equivalent O(1)CeU3 tetrahedra, corners with two equivalent O(3)CeU3 tetrahedra, corners with four equivalent O(2)U4 tetrahedra, corners with eight equivalent O(4)CeU3 tetrahedra,  an edgeedge with one O(1)CeU3 tetrahedra,  an edgeedge with one O(3)CeU3 tetrahedra, edges with two equivalent O(4)CeU3 tetrahedra, and edges with two equivalent O(2)U4 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 OU4 tetrahedra that share corners with two equivalent O(1)CeU3 tetrahedra, corners with four equivalent O(3)CeU3 tetrahedra, corners with four equivalent O(4)CeU3 tetrahedra, corners with six equivalent O(2)U4 tetrahedra,  an edgeedge with one O(1)CeU3 tetrahedra,  an edgeedge with one O(3)CeU3 tetrahedra, edges with two equivalent O(4)CeU3 tetrahedra, and edges with two equivalent O(2)U4 tetrahedra. In the third O site, O(3) is bonded to one U(3), two equivalent U(2), and one Ce(1) atom to form OCeU3 tetrahedra that share corners with two equivalent O(1)CeU3 tetrahedra, corners with two equivalent O(3)CeU3 tetrahedra, corners with four equivalent O(4)CeU3 tetrahedra, corners with eight equivalent O(2)U4 tetrahedra,  an edgeedge with one O(1)CeU3 tetrahedra,  an edgeedge with one O(3)CeU3 tetrahedra, edges with two equivalent O(4)CeU3 tetrahedra, and edges with two equivalent O(2)U4 tetrahedra. In the fourth O site, O(4) is bonded to one U(2), two equivalent U(1), and one Ce(1) atom to form OCeU3 tetrahedra that share corners with two equivalent O(3)CeU3 tetrahedra, corners with four equivalent O(1)CeU3 tetrahedra, corners with four equivalent O(2)U4 tetrahedra, corners with six equivalent O(4)CeU3 tetrahedra,  an edgeedge with one O(1)CeU3 tetrahedra,  an edgeedge with one O(3)CeU3 tetrahedra, edges with two equivalent O(4)CeU3 tetrahedra, and edges with two equivalent O(2)U4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeU5O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.637
_cell_length_b   6.637
_cell_length_c   6.726
_cell_angle_alpha   80.618
_cell_angle_beta   80.618
_cell_angle_gamma   119.704
_symmetry_Int_Tables_number   1
_cell_volume   243.420
_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
  Ce  Ce0  1  0.500  0.500  0.500  1.0
  U  U1  1  0.833  0.167  0.500  1.0
  U  U2  1  0.167  0.833  0.500  1.0
  U  U3  1  0.667  0.333  0.000  1.0
  U  U4  1  0.000  0.000  0.000  1.0
  U  U5  1  0.333  0.667  0.000  1.0
  O  O6  1  0.109  0.109  0.640  1.0
  O  O7  1  0.708  0.048  0.880  1.0
  O  O8  1  0.952  0.292  0.120  1.0
  O  O9  1  0.372  0.372  0.885  1.0
  O  O10  1  0.048  0.708  0.880  1.0
  O  O11  1  0.533  0.198  0.374  1.0
  O  O12  1  0.891  0.891  0.360  1.0
  O  O13  1  0.467  0.802  0.626  1.0
  O  O14  1  0.628  0.628  0.115  1.0
  O  O15  1  0.292  0.952  0.120  1.0
  O  O16  1  0.802  0.467  0.626  1.0
  O  O17  1  0.198  0.533  0.374  1.0
[/CIF]
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The crystal structure described by U5CeO12 is Fluorite-derived structured and 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 body-centered cubic geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. In the second U site, U(2) is bonded in a body-centered cubic geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(2) atoms. In the third U site, U(3) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(3), and four equivalent O(2) atoms. Ce(1) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(3), and four equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded to one U(3), two equivalent U(1), and one Ce(1) atom to form OCeU3 tetrahedra that share corners with two equivalent O(1)CeU3 tetrahedra, corners with two equivalent O(3)CeU3 tetrahedra, corners with four equivalent O(2)U4 tetrahedra, corners with eight equivalent O(4)CeU3 tetrahedra,  an edgeedge with one O(1)CeU3 tetrahedra,  an edgeedge with one O(3)CeU3 tetrahedra, edges with two equivalent O(4)CeU3 tetrahedra, and edges with two equivalent O(2)U4 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 OU4 tetrahedra that share corners with two equivalent O(1)CeU3 tetrahedra, corners with four equivalent O(3)CeU3 tetrahedra, corners with four equivalent O(4)CeU3 tetrahedra, corners with six equivalent O(2)U4 tetrahedra,  an edgeedge with one O(1)CeU3 tetrahedra,  an edgeedge with one O(3)CeU3 tetrahedra, edges with two equivalent O(4)CeU3 tetrahedra, and edges with two equivalent O(2)U4 tetrahedra. In the third O site, O(3) is bonded to one U(3), two equivalent U(2), and one Ce(1) atom to form OCeU3 tetrahedra that share corners with two equivalent O(1)CeU3 tetrahedra, corners with two equivalent O(3)CeU3 tetrahedra, corners with four equivalent O(4)CeU3 tetrahedra, corners with eight equivalent O(2)U4 tetrahedra,  an edgeedge with one O(1)CeU3 tetrahedra,  an edgeedge with one O(3)CeU3 tetrahedra, edges with two equivalent O(4)CeU3 tetrahedra, and edges with two equivalent O(2)U4 tetrahedra. In the fourth O site, O(4) is bonded to one U(2), two equivalent U(1), and one Ce(1) atom to form OCeU3 tetrahedra that share corners with two equivalent O(3)CeU3 tetrahedra, corners with four equivalent O(1)CeU3 tetrahedra, corners with four equivalent O(2)U4 tetrahedra, corners with six equivalent O(4)CeU3 tetrahedra,  an edgeedge with one O(1)CeU3 tetrahedra,  an edgeedge with one O(3)CeU3 tetrahedra, edges with two equivalent O(4)CeU3 tetrahedra, and edges with two equivalent O(2)U4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeU5O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.637
_cell_length_b   6.637
_cell_length_c   6.726
_cell_angle_alpha   80.618
_cell_angle_beta   80.618
_cell_angle_gamma   119.704
_symmetry_Int_Tables_number   1
_cell_volume   243.420
_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
  Ce  Ce0  1  0.500  0.500  0.500  1.0
  U  U1  1  0.833  0.167  0.500  1.0
  U  U2  1  0.167  0.833  0.500  1.0
  U  U3  1  0.667  0.333  0.000  1.0
  U  U4  1  0.000  0.000  0.000  1.0
  U  U5  1  0.333  0.667  0.000  1.0
  O  O6  1  0.109  0.109  0.640  1.0
  O  O7  1  0.708  0.048  0.880  1.0
  O  O8  1  0.952  0.292  0.120  1.0
  O  O9  1  0.372  0.372  0.885  1.0
  O  O10  1  0.048  0.708  0.880  1.0
  O  O11  1  0.533  0.198  0.374  1.0
  O  O12  1  0.891  0.891  0.360  1.0
  O  O13  1  0.467  0.802  0.626  1.0
  O  O14  1  0.628  0.628  0.115  1.0
  O  O15  1  0.292  0.952  0.120  1.0
  O  O16  1  0.802  0.467  0.626  1.0
  O  O17  1  0.198  0.533  0.374  1.0
[/CIF]
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