The structure described by UCe2Te4 crystallizes in the tetragonal I-42d space group. U(1) is bonded to eight equivalent Te(1) atoms to form distorted UTe8 hexagonal bipyramids that share corners with eight equivalent Ce(1)Te8 hexagonal bipyramids, edges with four equivalent U(1)Te8 hexagonal bipyramids, and faces with eight equivalent Ce(1)Te8 hexagonal bipyramids. Ce(1) is bonded to eight equivalent Te(1) atoms to form distorted CeTe8 hexagonal bipyramids that share corners with four equivalent U(1)Te8 hexagonal bipyramids, corners with four equivalent Ce(1)Te8 hexagonal bipyramids, edges with four equivalent Ce(1)Te8 hexagonal bipyramids, faces with four equivalent U(1)Te8 hexagonal bipyramids, and faces with four equivalent Ce(1)Te8 hexagonal bipyramids. Te(1) is bonded to two equivalent U(1) and four equivalent Ce(1) atoms to form a mixture of distorted edge, face, and corner-sharing TeCe4U2 octahedra. The corner-sharing octahedral tilt angles range from 15-50°. is represented by the CIF card [CIF]
data_Ce2UTe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.210
_cell_length_b   8.210
_cell_length_c   8.210
_cell_angle_alpha   109.416
_cell_angle_beta   109.416
_cell_angle_gamma   109.582
_symmetry_Int_Tables_number   1
_cell_volume   425.929
_cell_formula_units_Z   2
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  0.625  0.000  0.875  1.0
  Ce  Ce1  1  0.125  0.750  0.125  1.0
  Ce  Ce2  1  1.000  0.875  0.625  1.0
  Ce  Ce3  1  0.250  0.375  0.375  1.0
  U  U4  1  0.500  0.500  0.000  1.0
  U  U5  1  0.750  0.250  0.500  1.0
  Te  Te6  1  0.531  0.781  0.401  1.0
  Te  Te7  1  0.719  0.621  0.750  1.0
  Te  Te8  1  0.031  0.281  0.901  1.0
  Te  Te9  1  0.871  0.469  0.250  1.0
  Te  Te10  1  0.871  0.969  0.250  1.0
  Te  Te11  1  0.379  0.129  0.099  1.0
  Te  Te12  1  0.219  0.621  0.750  1.0
  Te  Te13  1  0.379  0.129  0.599  1.0
[/CIF]
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The structure described by UCe2Te4 crystallizes in the tetragonal I-42d space group. U(1) is bonded to eight equivalent Te(1) atoms to form distorted UTe8 hexagonal bipyramids that share corners with eight equivalent Ce(1)Te8 hexagonal bipyramids, edges with four equivalent U(1)Te8 hexagonal bipyramids, and faces with eight equivalent Ce(1)Te8 hexagonal bipyramids. Ce(1) is bonded to eight equivalent Te(1) atoms to form distorted CeTe8 hexagonal bipyramids that share corners with four equivalent U(1)Te8 hexagonal bipyramids, corners with four equivalent Ce(1)Te8 hexagonal bipyramids, edges with four equivalent Ce(1)Te8 hexagonal bipyramids, faces with four equivalent U(1)Te8 hexagonal bipyramids, and faces with four equivalent Ce(1)Te8 hexagonal bipyramids. Te(1) is bonded to two equivalent U(1) and four equivalent Ce(1) atoms to form a mixture of distorted edge, face, and corner-sharing TeCe4U2 octahedra. The corner-sharing octahedral tilt angles range from 15-50°. is represented by the CIF card [CIF]
data_Ce2UTe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.210
_cell_length_b   8.210
_cell_length_c   8.210
_cell_angle_alpha   109.416
_cell_angle_beta   109.416
_cell_angle_gamma   109.582
_symmetry_Int_Tables_number   1
_cell_volume   425.929
_cell_formula_units_Z   2
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  0.625  0.000  0.875  1.0
  Ce  Ce1  1  0.125  0.750  0.125  1.0
  Ce  Ce2  1  1.000  0.875  0.625  1.0
  Ce  Ce3  1  0.250  0.375  0.375  1.0
  U  U4  1  0.500  0.500  0.000  1.0
  U  U5  1  0.750  0.250  0.500  1.0
  Te  Te6  1  0.531  0.781  0.401  1.0
  Te  Te7  1  0.719  0.621  0.750  1.0
  Te  Te8  1  0.031  0.281  0.901  1.0
  Te  Te9  1  0.871  0.469  0.250  1.0
  Te  Te10  1  0.871  0.969  0.250  1.0
  Te  Te11  1  0.379  0.129  0.099  1.0
  Te  Te12  1  0.219  0.621  0.750  1.0
  Te  Te13  1  0.379  0.129  0.599  1.0
[/CIF]
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