The material described by SrU2(AsO9)2O2 crystallizes in the monoclinic P2/c space group. The structure consists of two 7782-44-7 molecules inside a SrU2(AsO9)2 framework. In the SrU2(AsO9)2 framework, Sr(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(7), and two equivalent O(9) atoms. U(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form UO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra. As(1) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form AsO4 tetrahedra that share corners with four equivalent U(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-45°. There are nine inequivalent O sites. In the first O site, O(7) is bonded in a bent 150 degrees geometry to one Sr(1) and one O(8) atom. In the second O site, O(8) is bonded in a distorted water-like geometry to one O(7) and one O(8) atom. In the third O site, O(1) is bonded in a single-bond geometry to one U(1) atom. In the fourth O site, O(9) is bonded in a single-bond geometry to one Sr(1) atom. In the fifth O site, O(2) is bonded in a bent 120 degrees geometry to one Sr(1) and one U(1) atom. In the sixth O site, O(3) is bonded in a 3-coordinate geometry to one Sr(1), one U(1), and one As(1) atom. In the seventh O site, O(4) is bonded in a bent 150 degrees geometry to one U(1) and one As(1) atom. In the eighth O site, O(5) is bonded in a bent 150 degrees geometry to one U(1) and one As(1) atom. In the ninth O site, O(6) is bonded in a bent 150 degrees geometry to one U(1) and one As(1) atom. is represented by the CIF card [CIF]
data_SrU2(AsO10)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.168
_cell_length_b   7.309
_cell_length_c   16.176
_cell_angle_alpha   83.262
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   841.661
_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
  Sr  Sr0  1  0.213  0.000  0.250  1.0
  Sr  Sr1  1  0.787  0.000  0.750  1.0
  U  U2  1  0.251  0.725  0.062  1.0
  U  U3  1  0.251  0.275  0.438  1.0
  U  U4  1  0.749  0.275  0.938  1.0
  U  U5  1  0.749  0.725  0.562  1.0
  As  As6  1  0.245  0.239  0.007  1.0
  As  As7  1  0.245  0.761  0.493  1.0
  As  As8  1  0.755  0.761  0.993  1.0
  As  As9  1  0.755  0.239  0.507  1.0
  O  O10  1  0.248  0.742  0.950  1.0
  O  O11  1  0.248  0.258  0.550  1.0
  O  O12  1  0.752  0.258  0.050  1.0
  O  O13  1  0.752  0.742  0.450  1.0
  O  O14  1  0.255  0.718  0.178  1.0
  O  O15  1  0.255  0.282  0.322  1.0
  O  O16  1  0.745  0.282  0.822  1.0
  O  O17  1  0.745  0.718  0.678  1.0
  O  O18  1  0.264  0.040  0.075  1.0
  O  O19  1  0.264  0.960  0.425  1.0
  O  O20  1  0.736  0.960  0.925  1.0
  O  O21  1  0.736  0.040  0.575  1.0
  O  O22  1  0.223  0.414  0.069  1.0
  O  O23  1  0.223  0.586  0.431  1.0
  O  O24  1  0.777  0.586  0.931  1.0
  O  O25  1  0.777  0.414  0.569  1.0
  O  O26  1  0.058  0.229  0.941  1.0
  O  O27  1  0.058  0.771  0.559  1.0
  O  O28  1  0.942  0.771  0.059  1.0
  O  O29  1  0.942  0.229  0.441  1.0
  O  O30  1  0.436  0.275  0.942  1.0
  O  O31  1  0.436  0.725  0.558  1.0
  O  O32  1  0.564  0.725  0.058  1.0
  O  O33  1  0.564  0.275  0.442  1.0
  O  O34  1  0.574  0.907  0.308  1.0
  O  O35  1  0.574  0.093  0.192  1.0
  O  O36  1  0.426  0.093  0.692  1.0
  O  O37  1  0.426  0.907  0.808  1.0
  O  O38  1  0.743  0.077  0.201  1.0
  O  O39  1  0.743  0.923  0.299  1.0
  O  O40  1  0.257  0.923  0.799  1.0
  O  O41  1  0.257  0.077  0.701  1.0
  O  O42  1  0.046  0.320  0.199  1.0
  O  O43  1  0.046  0.680  0.301  1.0
  O  O44  1  0.954  0.680  0.801  1.0
  O  O45  1  0.954  0.320  0.699  1.0
  O  O46  1  0.732  0.439  0.228  1.0
  O  O47  1  0.732  0.561  0.272  1.0
  O  O48  1  0.268  0.561  0.772  1.0
  O  O49  1  0.268  0.439  0.728  1.0
[/CIF]
.
The material described by SrU2(AsO9)2O2 crystallizes in the monoclinic P2/c space group. The structure consists of two 7782-44-7 molecules inside a SrU2(AsO9)2 framework. In the SrU2(AsO9)2 framework, Sr(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(7), and two equivalent O(9) atoms. U(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form UO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra. As(1) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form AsO4 tetrahedra that share corners with four equivalent U(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-45°. There are nine inequivalent O sites. In the first O site, O(7) is bonded in a bent 150 degrees geometry to one Sr(1) and one O(8) atom. In the second O site, O(8) is bonded in a distorted water-like geometry to one O(7) and one O(8) atom. In the third O site, O(1) is bonded in a single-bond geometry to one U(1) atom. In the fourth O site, O(9) is bonded in a single-bond geometry to one Sr(1) atom. In the fifth O site, O(2) is bonded in a bent 120 degrees geometry to one Sr(1) and one U(1) atom. In the sixth O site, O(3) is bonded in a 3-coordinate geometry to one Sr(1), one U(1), and one As(1) atom. In the seventh O site, O(4) is bonded in a bent 150 degrees geometry to one U(1) and one As(1) atom. In the eighth O site, O(5) is bonded in a bent 150 degrees geometry to one U(1) and one As(1) atom. In the ninth O site, O(6) is bonded in a bent 150 degrees geometry to one U(1) and one As(1) atom. is represented by the CIF card [CIF]
data_SrU2(AsO10)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.168
_cell_length_b   7.309
_cell_length_c   16.176
_cell_angle_alpha   83.262
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   841.661
_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
  Sr  Sr0  1  0.213  0.000  0.250  1.0
  Sr  Sr1  1  0.787  0.000  0.750  1.0
  U  U2  1  0.251  0.725  0.062  1.0
  U  U3  1  0.251  0.275  0.438  1.0
  U  U4  1  0.749  0.275  0.938  1.0
  U  U5  1  0.749  0.725  0.562  1.0
  As  As6  1  0.245  0.239  0.007  1.0
  As  As7  1  0.245  0.761  0.493  1.0
  As  As8  1  0.755  0.761  0.993  1.0
  As  As9  1  0.755  0.239  0.507  1.0
  O  O10  1  0.248  0.742  0.950  1.0
  O  O11  1  0.248  0.258  0.550  1.0
  O  O12  1  0.752  0.258  0.050  1.0
  O  O13  1  0.752  0.742  0.450  1.0
  O  O14  1  0.255  0.718  0.178  1.0
  O  O15  1  0.255  0.282  0.322  1.0
  O  O16  1  0.745  0.282  0.822  1.0
  O  O17  1  0.745  0.718  0.678  1.0
  O  O18  1  0.264  0.040  0.075  1.0
  O  O19  1  0.264  0.960  0.425  1.0
  O  O20  1  0.736  0.960  0.925  1.0
  O  O21  1  0.736  0.040  0.575  1.0
  O  O22  1  0.223  0.414  0.069  1.0
  O  O23  1  0.223  0.586  0.431  1.0
  O  O24  1  0.777  0.586  0.931  1.0
  O  O25  1  0.777  0.414  0.569  1.0
  O  O26  1  0.058  0.229  0.941  1.0
  O  O27  1  0.058  0.771  0.559  1.0
  O  O28  1  0.942  0.771  0.059  1.0
  O  O29  1  0.942  0.229  0.441  1.0
  O  O30  1  0.436  0.275  0.942  1.0
  O  O31  1  0.436  0.725  0.558  1.0
  O  O32  1  0.564  0.725  0.058  1.0
  O  O33  1  0.564  0.275  0.442  1.0
  O  O34  1  0.574  0.907  0.308  1.0
  O  O35  1  0.574  0.093  0.192  1.0
  O  O36  1  0.426  0.093  0.692  1.0
  O  O37  1  0.426  0.907  0.808  1.0
  O  O38  1  0.743  0.077  0.201  1.0
  O  O39  1  0.743  0.923  0.299  1.0
  O  O40  1  0.257  0.923  0.799  1.0
  O  O41  1  0.257  0.077  0.701  1.0
  O  O42  1  0.046  0.320  0.199  1.0
  O  O43  1  0.046  0.680  0.301  1.0
  O  O44  1  0.954  0.680  0.801  1.0
  O  O45  1  0.954  0.320  0.699  1.0
  O  O46  1  0.732  0.439  0.228  1.0
  O  O47  1  0.732  0.561  0.272  1.0
  O  O48  1  0.268  0.561  0.772  1.0
  O  O49  1  0.268  0.439  0.728  1.0
[/CIF]
.