The crystal structure described by U5O12Cl crystallizes in the orthorhombic Pmma space group. There are three inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(2), one O(5), one O(7), and two equivalent O(3) atoms to form distorted UO6 octahedra that share corners with three equivalent U(1)O6 octahedra, corners with two equivalent U(2)ClO6 pentagonal bipyramids, corners with two equivalent U(3)O6 pentagonal bipyramids, and  an edgeedge with one U(2)ClO6 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 2-29°. In the second U site, U(2) is bonded to one O(2), one O(7), two equivalent O(1), two equivalent O(6), and one Cl(1) atom to form distorted UClO6 pentagonal bipyramids that share corners with two equivalent U(1)O6 octahedra, corners with three equivalent U(2)ClO6 pentagonal bipyramids,  an edgeedge with one U(1)O6 octahedra,  an edgeedge with one U(2)ClO6 pentagonal bipyramid, and  an edgeedge with one U(3)O6 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 38-45°. In the third U site, U(3) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(7) atoms to form distorted UO6 pentagonal bipyramids that share corners with four equivalent U(1)O6 octahedra, corners with two equivalent U(3)O6 pentagonal bipyramids, and edges with two equivalent U(2)ClO6 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 30-62°. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one U(1), one U(2), and one U(3) atom. In the second O site, O(1) is bonded in a distorted trigonal planar geometry to one U(1) and two equivalent U(2) atoms. In the third O site, O(2) is bonded in a trigonal planar geometry to one U(1), one U(2), and one U(3) atom. In the fourth O site, O(3) is bonded in a linear geometry to two equivalent U(1) atoms. In the fifth O site, O(4) is bonded in a linear geometry to two equivalent U(3) atoms. In the sixth O site, O(5) is bonded in a distorted bent 150 degrees geometry to two equivalent U(1) atoms. In the seventh O site, O(6) is bonded in a linear geometry to two equivalent U(2) atoms. Cl(1) is bonded in a distorted linear geometry to two equivalent U(2) atoms. is represented by the CIF file [CIF]
data_U5ClO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.133
_cell_length_b   7.135
_cell_length_c   19.656
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   579.661
_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
  U  U0  1  0.000  0.209  0.854  1.0
  U  U1  1  0.000  0.791  0.146  1.0
  U  U2  1  0.000  0.209  0.646  1.0
  U  U3  1  0.000  0.791  0.354  1.0
  U  U4  1  0.000  0.335  0.430  1.0
  U  U5  1  0.000  0.665  0.570  1.0
  U  U6  1  0.000  0.335  0.070  1.0
  U  U7  1  0.000  0.665  0.930  1.0
  U  U8  1  0.000  0.251  0.250  1.0
  U  U9  1  0.000  0.749  0.750  1.0
  Cl  Cl10  1  0.000  0.000  0.500  1.0
  Cl  Cl11  1  0.000  0.000  0.000  1.0
  O  O12  1  0.000  0.627  0.049  1.0
  O  O13  1  0.000  0.373  0.951  1.0
  O  O14  1  0.000  0.627  0.451  1.0
  O  O15  1  0.000  0.373  0.549  1.0
  O  O16  1  0.000  0.109  0.148  1.0
  O  O17  1  0.000  0.891  0.852  1.0
  O  O18  1  0.000  0.109  0.352  1.0
  O  O19  1  0.000  0.891  0.648  1.0
  O  O20  1  0.500  0.210  0.856  1.0
  O  O21  1  0.500  0.790  0.144  1.0
  O  O22  1  0.500  0.210  0.644  1.0
  O  O23  1  0.500  0.790  0.356  1.0
  O  O24  1  0.500  0.248  0.250  1.0
  O  O25  1  0.500  0.752  0.750  1.0
  O  O26  1  0.000  0.866  0.250  1.0
  O  O27  1  0.000  0.134  0.750  1.0
  O  O28  1  0.500  0.332  0.430  1.0
  O  O29  1  0.500  0.668  0.570  1.0
  O  O30  1  0.500  0.332  0.070  1.0
  O  O31  1  0.500  0.668  0.930  1.0
  O  O32  1  0.000  0.479  0.172  1.0
  O  O33  1  0.000  0.521  0.828  1.0
  O  O34  1  0.000  0.479  0.328  1.0
  O  O35  1  0.000  0.521  0.672  1.0
[/CIF]
.
The crystal structure described by U5O12Cl crystallizes in the orthorhombic Pmma space group. There are three inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(2), one O(5), one O(7), and two equivalent O(3) atoms to form distorted UO6 octahedra that share corners with three equivalent U(1)O6 octahedra, corners with two equivalent U(2)ClO6 pentagonal bipyramids, corners with two equivalent U(3)O6 pentagonal bipyramids, and  an edgeedge with one U(2)ClO6 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 2-29°. In the second U site, U(2) is bonded to one O(2), one O(7), two equivalent O(1), two equivalent O(6), and one Cl(1) atom to form distorted UClO6 pentagonal bipyramids that share corners with two equivalent U(1)O6 octahedra, corners with three equivalent U(2)ClO6 pentagonal bipyramids,  an edgeedge with one U(1)O6 octahedra,  an edgeedge with one U(2)ClO6 pentagonal bipyramid, and  an edgeedge with one U(3)O6 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 38-45°. In the third U site, U(3) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(7) atoms to form distorted UO6 pentagonal bipyramids that share corners with four equivalent U(1)O6 octahedra, corners with two equivalent U(3)O6 pentagonal bipyramids, and edges with two equivalent U(2)ClO6 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 30-62°. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one U(1), one U(2), and one U(3) atom. In the second O site, O(1) is bonded in a distorted trigonal planar geometry to one U(1) and two equivalent U(2) atoms. In the third O site, O(2) is bonded in a trigonal planar geometry to one U(1), one U(2), and one U(3) atom. In the fourth O site, O(3) is bonded in a linear geometry to two equivalent U(1) atoms. In the fifth O site, O(4) is bonded in a linear geometry to two equivalent U(3) atoms. In the sixth O site, O(5) is bonded in a distorted bent 150 degrees geometry to two equivalent U(1) atoms. In the seventh O site, O(6) is bonded in a linear geometry to two equivalent U(2) atoms. Cl(1) is bonded in a distorted linear geometry to two equivalent U(2) atoms. is represented by the CIF file [CIF]
data_U5ClO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.133
_cell_length_b   7.135
_cell_length_c   19.656
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   579.661
_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
  U  U0  1  0.000  0.209  0.854  1.0
  U  U1  1  0.000  0.791  0.146  1.0
  U  U2  1  0.000  0.209  0.646  1.0
  U  U3  1  0.000  0.791  0.354  1.0
  U  U4  1  0.000  0.335  0.430  1.0
  U  U5  1  0.000  0.665  0.570  1.0
  U  U6  1  0.000  0.335  0.070  1.0
  U  U7  1  0.000  0.665  0.930  1.0
  U  U8  1  0.000  0.251  0.250  1.0
  U  U9  1  0.000  0.749  0.750  1.0
  Cl  Cl10  1  0.000  0.000  0.500  1.0
  Cl  Cl11  1  0.000  0.000  0.000  1.0
  O  O12  1  0.000  0.627  0.049  1.0
  O  O13  1  0.000  0.373  0.951  1.0
  O  O14  1  0.000  0.627  0.451  1.0
  O  O15  1  0.000  0.373  0.549  1.0
  O  O16  1  0.000  0.109  0.148  1.0
  O  O17  1  0.000  0.891  0.852  1.0
  O  O18  1  0.000  0.109  0.352  1.0
  O  O19  1  0.000  0.891  0.648  1.0
  O  O20  1  0.500  0.210  0.856  1.0
  O  O21  1  0.500  0.790  0.144  1.0
  O  O22  1  0.500  0.210  0.644  1.0
  O  O23  1  0.500  0.790  0.356  1.0
  O  O24  1  0.500  0.248  0.250  1.0
  O  O25  1  0.500  0.752  0.750  1.0
  O  O26  1  0.000  0.866  0.250  1.0
  O  O27  1  0.000  0.134  0.750  1.0
  O  O28  1  0.500  0.332  0.430  1.0
  O  O29  1  0.500  0.668  0.570  1.0
  O  O30  1  0.500  0.332  0.070  1.0
  O  O31  1  0.500  0.668  0.930  1.0
  O  O32  1  0.000  0.479  0.172  1.0
  O  O33  1  0.000  0.521  0.828  1.0
  O  O34  1  0.000  0.479  0.328  1.0
  O  O35  1  0.000  0.521  0.672  1.0
[/CIF]
.