The material described by U(BO2)4 crystallizes in the monoclinic C2/c space group. U(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing BO4 tetrahedra. In the second B site, B(2) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form corner-sharing BO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(4) is bonded in a distorted single-bond geometry to two equivalent U(1) and one B(2) atom. In the second O site, O(1) is bonded in a trigonal planar geometry to one B(2) and two equivalent B(1) atoms. In the third O site, O(2) is bonded in a distorted bent 120 degrees geometry to one U(1), one B(1), and one B(2) atom. In the fourth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one U(1), one B(1), and one B(2) atom. is represented by the CIF file [CIF]
data_U(BO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.310
_cell_length_b   8.310
_cell_length_c   7.287
_cell_angle_alpha   66.565
_cell_angle_beta   66.565
_cell_angle_gamma   29.645
_symmetry_Int_Tables_number   1
_cell_volume   226.853
_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  0.157  0.843  0.250  1.0
  U  U1  1  0.843  0.157  0.750  1.0
  B  B2  1  0.000  0.390  0.296  1.0
  B  B3  1  0.610  1.000  0.204  1.0
  B  B4  1  1.000  0.610  0.704  1.0
  B  B5  1  0.390  0.000  0.796  1.0
  B  B6  1  0.826  0.454  0.006  1.0
  B  B7  1  0.546  0.174  0.494  1.0
  B  B8  1  0.174  0.546  0.994  1.0
  B  B9  1  0.454  0.826  0.506  1.0
  O  O10  1  0.930  0.637  0.168  1.0
  O  O11  1  0.363  0.070  0.332  1.0
  O  O12  1  0.070  0.363  0.832  1.0
  O  O13  1  0.637  0.930  0.668  1.0
  O  O14  1  0.807  0.503  0.492  1.0
  O  O15  1  0.497  0.193  0.008  1.0
  O  O16  1  0.193  0.497  0.508  1.0
  O  O17  1  0.503  0.807  0.992  1.0
  O  O18  1  0.938  0.326  0.201  1.0
  O  O19  1  0.674  0.062  0.299  1.0
  O  O20  1  0.062  0.674  0.799  1.0
  O  O21  1  0.326  0.938  0.701  1.0
  O  O22  1  0.820  0.283  0.006  1.0
  O  O23  1  0.717  0.180  0.494  1.0
  O  O24  1  0.180  0.717  0.994  1.0
  O  O25  1  0.283  0.820  0.506  1.0
[/CIF]
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The material described by U(BO2)4 crystallizes in the monoclinic C2/c space group. U(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing BO4 tetrahedra. In the second B site, B(2) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form corner-sharing BO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(4) is bonded in a distorted single-bond geometry to two equivalent U(1) and one B(2) atom. In the second O site, O(1) is bonded in a trigonal planar geometry to one B(2) and two equivalent B(1) atoms. In the third O site, O(2) is bonded in a distorted bent 120 degrees geometry to one U(1), one B(1), and one B(2) atom. In the fourth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one U(1), one B(1), and one B(2) atom. is represented by the CIF file [CIF]
data_U(BO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.310
_cell_length_b   8.310
_cell_length_c   7.287
_cell_angle_alpha   66.565
_cell_angle_beta   66.565
_cell_angle_gamma   29.645
_symmetry_Int_Tables_number   1
_cell_volume   226.853
_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  0.157  0.843  0.250  1.0
  U  U1  1  0.843  0.157  0.750  1.0
  B  B2  1  0.000  0.390  0.296  1.0
  B  B3  1  0.610  1.000  0.204  1.0
  B  B4  1  1.000  0.610  0.704  1.0
  B  B5  1  0.390  0.000  0.796  1.0
  B  B6  1  0.826  0.454  0.006  1.0
  B  B7  1  0.546  0.174  0.494  1.0
  B  B8  1  0.174  0.546  0.994  1.0
  B  B9  1  0.454  0.826  0.506  1.0
  O  O10  1  0.930  0.637  0.168  1.0
  O  O11  1  0.363  0.070  0.332  1.0
  O  O12  1  0.070  0.363  0.832  1.0
  O  O13  1  0.637  0.930  0.668  1.0
  O  O14  1  0.807  0.503  0.492  1.0
  O  O15  1  0.497  0.193  0.008  1.0
  O  O16  1  0.193  0.497  0.508  1.0
  O  O17  1  0.503  0.807  0.992  1.0
  O  O18  1  0.938  0.326  0.201  1.0
  O  O19  1  0.674  0.062  0.299  1.0
  O  O20  1  0.062  0.674  0.799  1.0
  O  O21  1  0.326  0.938  0.701  1.0
  O  O22  1  0.820  0.283  0.006  1.0
  O  O23  1  0.717  0.180  0.494  1.0
  O  O24  1  0.180  0.717  0.994  1.0
  O  O25  1  0.283  0.820  0.506  1.0
[/CIF]
.