The compound described by U6Si11O crystallizes in the hexagonal P-62m space group. U(1) is bonded to one Si(2), two equivalent Si(1), two equivalent Si(4), three equivalent Si(3), three equivalent Si(5), and one O(1) atom to form a mixture of face and edge-sharing USi11O cuboctahedra. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent U(1) and three equivalent Si(5) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to six equivalent U(1) and three equivalent Si(5) atoms. In the third Si site, Si(3) is bonded in a single-bond geometry to six equivalent U(1), two equivalent Si(4), and one O(1) atom. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to six equivalent U(1) and three equivalent Si(3) atoms. In the fifth Si site, Si(5) is bonded in a 9-coordinate geometry to six equivalent U(1), one Si(2), and two equivalent Si(1) atoms. O(1) is bonded in a distorted trigonal planar geometry to six equivalent U(1) and three equivalent Si(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_U6Si11O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.945
_cell_length_b   6.945
_cell_length_c   7.602
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   317.566
_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
  U  U0  1  0.671  0.000  0.248  1.0
  U  U1  1  0.000  0.671  0.248  1.0
  U  U2  1  0.671  0.000  0.752  1.0
  U  U3  1  0.000  0.671  0.752  1.0
  U  U4  1  0.329  0.329  0.248  1.0
  U  U5  1  0.329  0.329  0.752  1.0
  Si  Si6  1  0.333  0.667  0.500  1.0
  Si  Si7  1  0.667  0.333  0.500  1.0
  Si  Si8  1  0.000  0.000  0.500  1.0
  Si  Si9  1  0.325  0.000  0.000  1.0
  Si  Si10  1  0.000  0.325  0.000  1.0
  Si  Si11  1  0.675  0.675  0.000  1.0
  Si  Si12  1  0.333  0.667  0.000  1.0
  Si  Si13  1  0.667  0.333  0.000  1.0
  Si  Si14  1  0.335  0.000  0.500  1.0
  Si  Si15  1  0.000  0.335  0.500  1.0
  Si  Si16  1  0.665  0.665  0.500  1.0
  O  O17  1  0.000  0.000  0.000  1.0
[/CIF]
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The compound described by U6Si11O crystallizes in the hexagonal P-62m space group. U(1) is bonded to one Si(2), two equivalent Si(1), two equivalent Si(4), three equivalent Si(3), three equivalent Si(5), and one O(1) atom to form a mixture of face and edge-sharing USi11O cuboctahedra. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to six equivalent U(1) and three equivalent Si(5) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to six equivalent U(1) and three equivalent Si(5) atoms. In the third Si site, Si(3) is bonded in a single-bond geometry to six equivalent U(1), two equivalent Si(4), and one O(1) atom. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to six equivalent U(1) and three equivalent Si(3) atoms. In the fifth Si site, Si(5) is bonded in a 9-coordinate geometry to six equivalent U(1), one Si(2), and two equivalent Si(1) atoms. O(1) is bonded in a distorted trigonal planar geometry to six equivalent U(1) and three equivalent Si(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_U6Si11O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.945
_cell_length_b   6.945
_cell_length_c   7.602
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   317.566
_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
  U  U0  1  0.671  0.000  0.248  1.0
  U  U1  1  0.000  0.671  0.248  1.0
  U  U2  1  0.671  0.000  0.752  1.0
  U  U3  1  0.000  0.671  0.752  1.0
  U  U4  1  0.329  0.329  0.248  1.0
  U  U5  1  0.329  0.329  0.752  1.0
  Si  Si6  1  0.333  0.667  0.500  1.0
  Si  Si7  1  0.667  0.333  0.500  1.0
  Si  Si8  1  0.000  0.000  0.500  1.0
  Si  Si9  1  0.325  0.000  0.000  1.0
  Si  Si10  1  0.000  0.325  0.000  1.0
  Si  Si11  1  0.675  0.675  0.000  1.0
  Si  Si12  1  0.333  0.667  0.000  1.0
  Si  Si13  1  0.667  0.333  0.000  1.0
  Si  Si14  1  0.335  0.000  0.500  1.0
  Si  Si15  1  0.000  0.335  0.500  1.0
  Si  Si16  1  0.665  0.665  0.500  1.0
  O  O17  1  0.000  0.000  0.000  1.0
[/CIF]
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