The compound described by La6UO12 crystallizes in the trigonal R-3 space group. U(1) is bonded in an octahedral geometry to six equivalent O(2) atoms. La(1) is bonded in a 7-coordinate geometry to three equivalent O(2) and four equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(2) is bonded in a 4-coordinate geometry to one U(1) and three equivalent La(1) atoms. In the second O site, O(1) is bonded to four equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra. is represented by the CIF file [CIF]
data_La6UO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.898
_cell_length_b   6.898
_cell_length_c   6.898
_cell_angle_alpha   98.699
_cell_angle_beta   98.699
_cell_angle_gamma   98.699
_symmetry_Int_Tables_number   1
_cell_volume   315.592
_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
  La  La0  1  0.690  0.393  0.856  1.0
  La  La1  1  0.393  0.856  0.690  1.0
  La  La2  1  0.856  0.690  0.393  1.0
  La  La3  1  0.310  0.607  0.144  1.0
  La  La4  1  0.607  0.144  0.310  1.0
  La  La5  1  0.144  0.310  0.607  1.0
  U  U6  1  0.000  0.000  0.000  1.0
  O  O7  1  0.438  0.177  0.593  1.0
  O  O8  1  0.177  0.593  0.438  1.0
  O  O9  1  0.593  0.438  0.177  1.0
  O  O10  1  0.562  0.823  0.407  1.0
  O  O11  1  0.823  0.407  0.562  1.0
  O  O12  1  0.407  0.562  0.823  1.0
  O  O13  1  0.043  0.933  0.704  1.0
  O  O14  1  0.296  0.957  0.067  1.0
  O  O15  1  0.067  0.296  0.957  1.0
  O  O16  1  0.957  0.067  0.296  1.0
  O  O17  1  0.704  0.043  0.933  1.0
  O  O18  1  0.933  0.704  0.043  1.0
[/CIF]
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The compound described by La6UO12 crystallizes in the trigonal R-3 space group. U(1) is bonded in an octahedral geometry to six equivalent O(2) atoms. La(1) is bonded in a 7-coordinate geometry to three equivalent O(2) and four equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(2) is bonded in a 4-coordinate geometry to one U(1) and three equivalent La(1) atoms. In the second O site, O(1) is bonded to four equivalent La(1) atoms to form a mixture of corner and edge-sharing OLa4 tetrahedra. is represented by the CIF file [CIF]
data_La6UO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.898
_cell_length_b   6.898
_cell_length_c   6.898
_cell_angle_alpha   98.699
_cell_angle_beta   98.699
_cell_angle_gamma   98.699
_symmetry_Int_Tables_number   1
_cell_volume   315.592
_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
  La  La0  1  0.690  0.393  0.856  1.0
  La  La1  1  0.393  0.856  0.690  1.0
  La  La2  1  0.856  0.690  0.393  1.0
  La  La3  1  0.310  0.607  0.144  1.0
  La  La4  1  0.607  0.144  0.310  1.0
  La  La5  1  0.144  0.310  0.607  1.0
  U  U6  1  0.000  0.000  0.000  1.0
  O  O7  1  0.438  0.177  0.593  1.0
  O  O8  1  0.177  0.593  0.438  1.0
  O  O9  1  0.593  0.438  0.177  1.0
  O  O10  1  0.562  0.823  0.407  1.0
  O  O11  1  0.823  0.407  0.562  1.0
  O  O12  1  0.407  0.562  0.823  1.0
  O  O13  1  0.043  0.933  0.704  1.0
  O  O14  1  0.296  0.957  0.067  1.0
  O  O15  1  0.067  0.296  0.957  1.0
  O  O16  1  0.957  0.067  0.296  1.0
  O  O17  1  0.704  0.043  0.933  1.0
  O  O18  1  0.933  0.704  0.043  1.0
[/CIF]
.