The compound described by ULa2Te4 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 La(1)Te8 hexagonal bipyramids, edges with four equivalent U(1)Te8 hexagonal bipyramids, and faces with eight equivalent La(1)Te8 hexagonal bipyramids. La(1) is bonded to eight equivalent Te(1) atoms to form distorted LaTe8 hexagonal bipyramids that share corners with four equivalent U(1)Te8 hexagonal bipyramids, corners with four equivalent La(1)Te8 hexagonal bipyramids, edges with four equivalent La(1)Te8 hexagonal bipyramids, faces with four equivalent U(1)Te8 hexagonal bipyramids, and faces with four equivalent La(1)Te8 hexagonal bipyramids. Te(1) is bonded to two equivalent U(1) and four equivalent La(1) atoms to form a mixture of distorted corner, edge, and face-sharing TeLa4U2 octahedra. The corner-sharing octahedral tilt angles range from 15-51°. is represented by the Crystallographic Information File (CIF) [CIF]
data_La2UTe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.288
_cell_length_b   8.288
_cell_length_c   8.288
_cell_angle_alpha   109.332
_cell_angle_beta   109.332
_cell_angle_gamma   109.750
_symmetry_Int_Tables_number   1
_cell_volume   438.294
_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
  La  La0  1  0.499  0.875  0.124  1.0
  La  La1  1  0.751  0.375  0.876  1.0
  La  La2  1  0.125  0.249  0.624  1.0
  La  La3  1  0.625  0.501  0.376  1.0
  U  U4  1  0.250  0.750  0.500  1.0
  U  U5  1  0.000  0.000  0.000  1.0
  Te  Te6  1  0.531  0.631  0.750  1.0
  Te  Te7  1  0.882  0.781  0.250  1.0
  Te  Te8  1  0.719  0.969  0.600  1.0
  Te  Te9  1  0.369  0.118  0.900  1.0
  Te  Te10  1  0.881  0.281  0.250  1.0
  Te  Te11  1  0.368  0.119  0.400  1.0
  Te  Te12  1  0.031  0.632  0.750  1.0
  Te  Te13  1  0.219  0.469  0.100  1.0
[/CIF]
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The compound described by ULa2Te4 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 La(1)Te8 hexagonal bipyramids, edges with four equivalent U(1)Te8 hexagonal bipyramids, and faces with eight equivalent La(1)Te8 hexagonal bipyramids. La(1) is bonded to eight equivalent Te(1) atoms to form distorted LaTe8 hexagonal bipyramids that share corners with four equivalent U(1)Te8 hexagonal bipyramids, corners with four equivalent La(1)Te8 hexagonal bipyramids, edges with four equivalent La(1)Te8 hexagonal bipyramids, faces with four equivalent U(1)Te8 hexagonal bipyramids, and faces with four equivalent La(1)Te8 hexagonal bipyramids. Te(1) is bonded to two equivalent U(1) and four equivalent La(1) atoms to form a mixture of distorted corner, edge, and face-sharing TeLa4U2 octahedra. The corner-sharing octahedral tilt angles range from 15-51°. is represented by the Crystallographic Information File (CIF) [CIF]
data_La2UTe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.288
_cell_length_b   8.288
_cell_length_c   8.288
_cell_angle_alpha   109.332
_cell_angle_beta   109.332
_cell_angle_gamma   109.750
_symmetry_Int_Tables_number   1
_cell_volume   438.294
_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
  La  La0  1  0.499  0.875  0.124  1.0
  La  La1  1  0.751  0.375  0.876  1.0
  La  La2  1  0.125  0.249  0.624  1.0
  La  La3  1  0.625  0.501  0.376  1.0
  U  U4  1  0.250  0.750  0.500  1.0
  U  U5  1  0.000  0.000  0.000  1.0
  Te  Te6  1  0.531  0.631  0.750  1.0
  Te  Te7  1  0.882  0.781  0.250  1.0
  Te  Te8  1  0.719  0.969  0.600  1.0
  Te  Te9  1  0.369  0.118  0.900  1.0
  Te  Te10  1  0.881  0.281  0.250  1.0
  Te  Te11  1  0.368  0.119  0.400  1.0
  Te  Te12  1  0.031  0.632  0.750  1.0
  Te  Te13  1  0.219  0.469  0.100  1.0
[/CIF]
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