The crystal structure described by U2MoO8 crystallizes in the monoclinic P2_1/c 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(6), one O(8), and two equivalent O(7) atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent U(2)O6 octahedra, corners with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one U(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-56°. In the second U site, U(2) is bonded to one O(4), one O(6), two equivalent O(1), and two equivalent O(5) atoms to form distorted UO6 octahedra that share corners with four equivalent U(2)O6 octahedra, corners with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one U(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 3-61°. Mo(1) is bonded in a 6-coordinate geometry to one O(2), one O(6), two equivalent O(3), and two equivalent O(8) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one U(1) and two equivalent U(2) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one U(1) and one Mo(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Mo(1) atoms. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one U(1) and one U(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to two equivalent U(2) atoms. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one U(1), one U(2), and one Mo(1) atom. In the seventh O site, O(7) is bonded in a linear geometry to two equivalent U(1) atoms. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one U(1) and two equivalent Mo(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_U2MoO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   23.840
_cell_length_b   4.150
_cell_length_c   6.651
_cell_angle_alpha   89.510
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   658.021
_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  0.880  0.493  0.696  1.0
  U  U1  1  0.287  0.502  0.332  1.0
  U  U2  1  0.787  0.498  0.168  1.0
  U  U3  1  0.620  0.493  0.196  1.0
  U  U4  1  0.713  0.498  0.668  1.0
  U  U5  1  0.380  0.507  0.804  1.0
  U  U6  1  0.213  0.502  0.832  1.0
  U  U7  1  0.120  0.507  0.304  1.0
  Mo  Mo8  1  0.452  0.414  0.334  1.0
  Mo  Mo9  1  0.952  0.586  0.166  1.0
  Mo  Mo10  1  0.048  0.414  0.834  1.0
  Mo  Mo11  1  0.548  0.586  0.666  1.0
  O  O12  1  0.708  0.498  0.342  1.0
  O  O13  1  0.432  0.508  0.047  1.0
  O  O14  1  0.068  0.508  0.547  1.0
  O  O15  1  0.455  0.994  0.318  1.0
  O  O16  1  0.187  0.501  0.534  1.0
  O  O17  1  0.292  0.502  0.658  1.0
  O  O18  1  0.208  0.502  0.158  1.0
  O  O19  1  0.215  0.001  0.834  1.0
  O  O20  1  0.374  0.509  0.417  1.0
  O  O21  1  0.122  0.005  0.291  1.0
  O  O22  1  0.955  0.006  0.182  1.0
  O  O23  1  0.964  0.508  0.862  1.0
  O  O24  1  0.464  0.492  0.638  1.0
  O  O25  1  0.687  0.499  0.966  1.0
  O  O26  1  0.285  0.001  0.334  1.0
  O  O27  1  0.878  0.995  0.709  1.0
  O  O28  1  0.378  0.005  0.791  1.0
  O  O29  1  0.313  0.501  0.034  1.0
  O  O30  1  0.126  0.509  0.917  1.0
  O  O31  1  0.568  0.492  0.953  1.0
  O  O32  1  0.785  0.999  0.166  1.0
  O  O33  1  0.045  0.994  0.818  1.0
  O  O34  1  0.792  0.498  0.842  1.0
  O  O35  1  0.622  0.995  0.209  1.0
  O  O36  1  0.813  0.499  0.466  1.0
  O  O37  1  0.536  0.508  0.362  1.0
  O  O38  1  0.932  0.492  0.453  1.0
  O  O39  1  0.874  0.491  0.083  1.0
  O  O40  1  0.545  0.006  0.682  1.0
  O  O41  1  0.036  0.492  0.138  1.0
  O  O42  1  0.626  0.491  0.583  1.0
  O  O43  1  0.715  0.999  0.666  1.0
[/CIF]
.
The crystal structure described by U2MoO8 crystallizes in the monoclinic P2_1/c 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(6), one O(8), and two equivalent O(7) atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent U(2)O6 octahedra, corners with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one U(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-56°. In the second U site, U(2) is bonded to one O(4), one O(6), two equivalent O(1), and two equivalent O(5) atoms to form distorted UO6 octahedra that share corners with four equivalent U(2)O6 octahedra, corners with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one U(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 3-61°. Mo(1) is bonded in a 6-coordinate geometry to one O(2), one O(6), two equivalent O(3), and two equivalent O(8) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one U(1) and two equivalent U(2) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one U(1) and one Mo(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Mo(1) atoms. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one U(1) and one U(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to two equivalent U(2) atoms. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one U(1), one U(2), and one Mo(1) atom. In the seventh O site, O(7) is bonded in a linear geometry to two equivalent U(1) atoms. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one U(1) and two equivalent Mo(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_U2MoO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   23.840
_cell_length_b   4.150
_cell_length_c   6.651
_cell_angle_alpha   89.510
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   658.021
_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  0.880  0.493  0.696  1.0
  U  U1  1  0.287  0.502  0.332  1.0
  U  U2  1  0.787  0.498  0.168  1.0
  U  U3  1  0.620  0.493  0.196  1.0
  U  U4  1  0.713  0.498  0.668  1.0
  U  U5  1  0.380  0.507  0.804  1.0
  U  U6  1  0.213  0.502  0.832  1.0
  U  U7  1  0.120  0.507  0.304  1.0
  Mo  Mo8  1  0.452  0.414  0.334  1.0
  Mo  Mo9  1  0.952  0.586  0.166  1.0
  Mo  Mo10  1  0.048  0.414  0.834  1.0
  Mo  Mo11  1  0.548  0.586  0.666  1.0
  O  O12  1  0.708  0.498  0.342  1.0
  O  O13  1  0.432  0.508  0.047  1.0
  O  O14  1  0.068  0.508  0.547  1.0
  O  O15  1  0.455  0.994  0.318  1.0
  O  O16  1  0.187  0.501  0.534  1.0
  O  O17  1  0.292  0.502  0.658  1.0
  O  O18  1  0.208  0.502  0.158  1.0
  O  O19  1  0.215  0.001  0.834  1.0
  O  O20  1  0.374  0.509  0.417  1.0
  O  O21  1  0.122  0.005  0.291  1.0
  O  O22  1  0.955  0.006  0.182  1.0
  O  O23  1  0.964  0.508  0.862  1.0
  O  O24  1  0.464  0.492  0.638  1.0
  O  O25  1  0.687  0.499  0.966  1.0
  O  O26  1  0.285  0.001  0.334  1.0
  O  O27  1  0.878  0.995  0.709  1.0
  O  O28  1  0.378  0.005  0.791  1.0
  O  O29  1  0.313  0.501  0.034  1.0
  O  O30  1  0.126  0.509  0.917  1.0
  O  O31  1  0.568  0.492  0.953  1.0
  O  O32  1  0.785  0.999  0.166  1.0
  O  O33  1  0.045  0.994  0.818  1.0
  O  O34  1  0.792  0.498  0.842  1.0
  O  O35  1  0.622  0.995  0.209  1.0
  O  O36  1  0.813  0.499  0.466  1.0
  O  O37  1  0.536  0.508  0.362  1.0
  O  O38  1  0.932  0.492  0.453  1.0
  O  O39  1  0.874  0.491  0.083  1.0
  O  O40  1  0.545  0.006  0.682  1.0
  O  O41  1  0.036  0.492  0.138  1.0
  O  O42  1  0.626  0.491  0.583  1.0
  O  O43  1  0.715  0.999  0.666  1.0
[/CIF]
.