The crystal structure described by U2WO8 crystallizes in the orthorhombic Pbam space group. There are two inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(2), one O(4), one O(7), one O(8), and two equivalent O(5) atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent W(1)O6 octahedra,  a cornercorner with one U(2)O7 pentagonal bipyramid, corners with two equivalent U(1)O7 pentagonal bipyramids,  an edgeedge with one W(1)O6 octahedra, and edges with two equivalent U(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 30-35°. In the second U site, U(2) is bonded to one O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one U(1)O7 pentagonal bipyramid, corners with two equivalent U(2)O7 pentagonal bipyramids, edges with two equivalent U(1)O7 pentagonal bipyramids, and edges with two equivalent U(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. W(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form WO6 octahedra that share corners with two equivalent W(1)O6 octahedra,  a cornercorner with one U(2)O7 pentagonal bipyramid, corners with two equivalent U(1)O7 pentagonal bipyramids,  an edgeedge with one W(1)O6 octahedra, and  an edgeedge with one U(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 4°. There are eight inequivalent O sites. In the first O site, O(6) is bonded in a linear geometry to two equivalent W(1) atoms. In the second O site, O(7) is bonded in a distorted bent 150 degrees geometry to one U(1) and two equivalent U(2) atoms. In the third O site, O(8) is bonded in a bent 150 degrees geometry to one U(1) and one W(1) atom. In the fourth O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one U(1) and two equivalent W(1) atoms. In the fifth O site, O(2) is bonded in a 3-coordinate geometry to one U(1), one U(2), and one W(1) atom. In the sixth O site, O(3) is bonded in a linear geometry to two equivalent U(2) atoms. In the seventh O site, O(4) is bonded in a trigonal planar geometry to one U(1) and two equivalent U(2) atoms. In the eighth O site, O(5) is bonded in a linear geometry to two equivalent U(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_U2WO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.061
_cell_length_b   6.830
_cell_length_c   23.701
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   657.358
_cell_formula_units_Z   4
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  0.304  0.377  1.0
  U  U1  1  0.000  0.696  0.623  1.0
  U  U2  1  0.000  0.196  0.877  1.0
  U  U3  1  0.000  0.804  0.123  1.0
  U  U4  1  0.000  0.326  0.216  1.0
  U  U5  1  0.000  0.674  0.784  1.0
  U  U6  1  0.000  0.174  0.716  1.0
  U  U7  1  0.000  0.826  0.284  1.0
  W  W8  1  0.000  0.325  0.048  1.0
  W  W9  1  0.000  0.675  0.952  1.0
  W  W10  1  0.000  0.175  0.548  1.0
  W  W11  1  0.000  0.825  0.452  1.0
  O  O12  1  0.000  0.139  0.465  1.0
  O  O13  1  0.000  0.861  0.535  1.0
  O  O14  1  0.000  0.361  0.965  1.0
  O  O15  1  0.000  0.639  0.035  1.0
  O  O16  1  0.000  0.419  0.123  1.0
  O  O17  1  0.000  0.581  0.877  1.0
  O  O18  1  0.000  0.081  0.623  1.0
  O  O19  1  0.000  0.919  0.377  1.0
  O  O20  1  0.500  0.321  0.216  1.0
  O  O21  1  0.500  0.679  0.784  1.0
  O  O22  1  0.500  0.179  0.716  1.0
  O  O23  1  0.500  0.821  0.284  1.0
  O  O24  1  0.000  0.152  0.294  1.0
  O  O25  1  0.000  0.848  0.706  1.0
  O  O26  1  0.000  0.348  0.794  1.0
  O  O27  1  0.000  0.652  0.206  1.0
  O  O28  1  0.500  0.302  0.378  1.0
  O  O29  1  0.500  0.698  0.622  1.0
  O  O30  1  0.500  0.198  0.878  1.0
  O  O31  1  0.500  0.802  0.122  1.0
  O  O32  1  0.500  0.332  0.046  1.0
  O  O33  1  0.500  0.668  0.954  1.0
  O  O34  1  0.500  0.168  0.546  1.0
  O  O35  1  0.500  0.832  0.454  1.0
  O  O36  1  0.000  0.025  0.188  1.0
  O  O37  1  0.000  0.975  0.812  1.0
  O  O38  1  0.000  0.475  0.688  1.0
  O  O39  1  0.000  0.525  0.312  1.0
  O  O40  1  0.000  0.062  0.061  1.0
  O  O41  1  0.000  0.938  0.939  1.0
  O  O42  1  0.000  0.438  0.561  1.0
  O  O43  1  0.000  0.562  0.439  1.0
[/CIF]
.
The crystal structure described by U2WO8 crystallizes in the orthorhombic Pbam space group. There are two inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(2), one O(4), one O(7), one O(8), and two equivalent O(5) atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent W(1)O6 octahedra,  a cornercorner with one U(2)O7 pentagonal bipyramid, corners with two equivalent U(1)O7 pentagonal bipyramids,  an edgeedge with one W(1)O6 octahedra, and edges with two equivalent U(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 30-35°. In the second U site, U(2) is bonded to one O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one U(1)O7 pentagonal bipyramid, corners with two equivalent U(2)O7 pentagonal bipyramids, edges with two equivalent U(1)O7 pentagonal bipyramids, and edges with two equivalent U(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. W(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form WO6 octahedra that share corners with two equivalent W(1)O6 octahedra,  a cornercorner with one U(2)O7 pentagonal bipyramid, corners with two equivalent U(1)O7 pentagonal bipyramids,  an edgeedge with one W(1)O6 octahedra, and  an edgeedge with one U(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 4°. There are eight inequivalent O sites. In the first O site, O(6) is bonded in a linear geometry to two equivalent W(1) atoms. In the second O site, O(7) is bonded in a distorted bent 150 degrees geometry to one U(1) and two equivalent U(2) atoms. In the third O site, O(8) is bonded in a bent 150 degrees geometry to one U(1) and one W(1) atom. In the fourth O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one U(1) and two equivalent W(1) atoms. In the fifth O site, O(2) is bonded in a 3-coordinate geometry to one U(1), one U(2), and one W(1) atom. In the sixth O site, O(3) is bonded in a linear geometry to two equivalent U(2) atoms. In the seventh O site, O(4) is bonded in a trigonal planar geometry to one U(1) and two equivalent U(2) atoms. In the eighth O site, O(5) is bonded in a linear geometry to two equivalent U(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_U2WO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.061
_cell_length_b   6.830
_cell_length_c   23.701
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   657.358
_cell_formula_units_Z   4
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  0.304  0.377  1.0
  U  U1  1  0.000  0.696  0.623  1.0
  U  U2  1  0.000  0.196  0.877  1.0
  U  U3  1  0.000  0.804  0.123  1.0
  U  U4  1  0.000  0.326  0.216  1.0
  U  U5  1  0.000  0.674  0.784  1.0
  U  U6  1  0.000  0.174  0.716  1.0
  U  U7  1  0.000  0.826  0.284  1.0
  W  W8  1  0.000  0.325  0.048  1.0
  W  W9  1  0.000  0.675  0.952  1.0
  W  W10  1  0.000  0.175  0.548  1.0
  W  W11  1  0.000  0.825  0.452  1.0
  O  O12  1  0.000  0.139  0.465  1.0
  O  O13  1  0.000  0.861  0.535  1.0
  O  O14  1  0.000  0.361  0.965  1.0
  O  O15  1  0.000  0.639  0.035  1.0
  O  O16  1  0.000  0.419  0.123  1.0
  O  O17  1  0.000  0.581  0.877  1.0
  O  O18  1  0.000  0.081  0.623  1.0
  O  O19  1  0.000  0.919  0.377  1.0
  O  O20  1  0.500  0.321  0.216  1.0
  O  O21  1  0.500  0.679  0.784  1.0
  O  O22  1  0.500  0.179  0.716  1.0
  O  O23  1  0.500  0.821  0.284  1.0
  O  O24  1  0.000  0.152  0.294  1.0
  O  O25  1  0.000  0.848  0.706  1.0
  O  O26  1  0.000  0.348  0.794  1.0
  O  O27  1  0.000  0.652  0.206  1.0
  O  O28  1  0.500  0.302  0.378  1.0
  O  O29  1  0.500  0.698  0.622  1.0
  O  O30  1  0.500  0.198  0.878  1.0
  O  O31  1  0.500  0.802  0.122  1.0
  O  O32  1  0.500  0.332  0.046  1.0
  O  O33  1  0.500  0.668  0.954  1.0
  O  O34  1  0.500  0.168  0.546  1.0
  O  O35  1  0.500  0.832  0.454  1.0
  O  O36  1  0.000  0.025  0.188  1.0
  O  O37  1  0.000  0.975  0.812  1.0
  O  O38  1  0.000  0.475  0.688  1.0
  O  O39  1  0.000  0.525  0.312  1.0
  O  O40  1  0.000  0.062  0.061  1.0
  O  O41  1  0.000  0.938  0.939  1.0
  O  O42  1  0.000  0.438  0.561  1.0
  O  O43  1  0.000  0.562  0.439  1.0
[/CIF]
.