The structure described by (SrU2Cr2O15)2(O2)7 crystallizes in the triclinic P-1 space group. The structure consists of four hydrogen peroxide molecules and two trioxidane molecules inside a SrU2Cr2O15 framework. In the SrU2Cr2O15 framework, Sr(1) is bonded in a 5-coordinate geometry to one O(1), one O(13), one O(14), one O(15), and one O(3) atom. There are two inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(10), one O(11), one O(2), one O(7), and two equivalent O(5) atoms to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one Cr(1)O4 tetrahedra, corners with two equivalent Cr(2)O4 tetrahedra, and  an edgeedge with one U(1)O7 pentagonal bipyramid. In the second U site, U(2) is bonded to one O(12), one O(13), one O(3), one O(4), one O(8), and two equivalent O(6) atoms to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one Cr(2)O4 tetrahedra, corners with two equivalent Cr(1)O4 tetrahedra, and  an edgeedge with one U(2)O7 pentagonal bipyramid. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(11), one O(12), one O(13), and one O(14) atom to form CrO4 tetrahedra that share  a cornercorner with one U(1)O7 pentagonal bipyramid and corners with two equivalent U(2)O7 pentagonal bipyramids. In the second Cr site, Cr(2) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form CrO4 tetrahedra that share  a cornercorner with one U(2)O7 pentagonal bipyramid and corners with two equivalent U(1)O7 pentagonal bipyramids. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Sr(1) and one U(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one U(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Sr(1) and one U(2) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one U(2) atom. In the fifth O site, O(5) is bonded in a water-like geometry to two equivalent U(1) atoms. In the sixth O site, O(6) is bonded in a water-like geometry to two equivalent U(2) atoms. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one U(1) and one Cr(2) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one U(2) and one Cr(2) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Cr(2) and one O(15) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one U(1) and one Cr(2) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one U(1) and one Cr(1) atom. In the twelfth O site, O(12) is bonded in a distorted bent 150 degrees geometry to one U(2) and one Cr(1) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Sr(1), one U(2), and one Cr(1) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one Cr(1) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one Sr(1) and one O(9) atom. is represented by the CIF file [CIF]
data_SrU2Cr2O22
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.079
_cell_length_b   10.005
_cell_length_c   11.211
_cell_angle_alpha   108.925
_cell_angle_beta   96.781
_cell_angle_gamma   94.189
_symmetry_Int_Tables_number   1
_cell_volume   949.841
_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  0.749  0.365  0.329  1.0
  Sr  Sr1  1  0.251  0.635  0.671  1.0
  U  U2  1  0.956  0.644  0.955  1.0
  U  U3  1  0.044  0.356  0.045  1.0
  U  U4  1  0.524  0.856  0.552  1.0
  U  U5  1  0.476  0.144  0.448  1.0
  Cr  Cr6  1  0.648  0.533  0.653  1.0
  Cr  Cr7  1  0.352  0.467  0.347  1.0
  Cr  Cr8  1  0.766  0.993  0.909  1.0
  Cr  Cr9  1  0.234  0.007  0.091  1.0
  O  O10  1  0.069  0.615  0.820  1.0
  O  O11  1  0.931  0.385  0.180  1.0
  O  O12  1  0.848  0.710  0.085  1.0
  O  O13  1  0.152  0.290  0.915  1.0
  O  O14  1  0.332  0.837  0.594  1.0
  O  O15  1  0.668  0.163  0.406  1.0
  O  O16  1  0.718  0.846  0.527  1.0
  O  O17  1  0.282  0.154  0.473  1.0
  O  O18  1  0.886  0.428  0.931  1.0
  O  O19  1  0.114  0.572  0.069  1.0
  O  O20  1  0.460  0.917  0.390  1.0
  O  O21  1  0.540  0.083  0.610  1.0
  O  O22  1  0.873  0.870  0.914  1.0
  O  O23  1  0.127  0.130  0.086  1.0
  O  O24  1  0.632  0.938  0.788  1.0
  O  O25  1  0.368  0.062  0.212  1.0
  O  O26  1  0.689  0.038  0.068  1.0
  O  O27  1  0.311  0.962  0.932  1.0
  O  O28  1  0.863  0.141  0.920  1.0
  O  O29  1  0.137  0.859  0.080  1.0
  O  O30  1  0.736  0.588  0.802  1.0
  O  O31  1  0.264  0.412  0.198  1.0
  O  O32  1  0.556  0.373  0.618  1.0
  O  O33  1  0.444  0.627  0.383  1.0
  O  O34  1  0.522  0.647  0.641  1.0
  O  O35  1  0.478  0.353  0.359  1.0
  O  O36  1  0.770  0.526  0.553  1.0
  O  O37  1  0.230  0.474  0.447  1.0
  O  O38  1  0.638  0.161  0.100  1.0
  O  O39  1  0.362  0.839  0.900  1.0
  O  O40  1  0.642  0.624  0.226  1.0
  O  O41  1  0.358  0.376  0.774  1.0
  O  O42  1  0.420  0.290  0.825  1.0
  O  O43  1  0.580  0.710  0.175  1.0
  O  O44  1  0.527  0.343  0.916  1.0
  O  O45  1  0.473  0.657  0.084  1.0
  O  O46  1  0.077  0.006  0.627  1.0
  O  O47  1  0.923  0.994  0.373  1.0
  O  O48  1  0.928  0.259  0.652  1.0
  O  O49  1  0.072  0.741  0.348  1.0
  O  O50  1  0.998  0.319  0.592  1.0
  O  O51  1  0.002  0.681  0.408  1.0
  O  O52  1  0.959  0.092  0.335  1.0
  O  O53  1  0.041  0.908  0.665  1.0
[/CIF]
.
The structure described by (SrU2Cr2O15)2(O2)7 crystallizes in the triclinic P-1 space group. The structure consists of four hydrogen peroxide molecules and two trioxidane molecules inside a SrU2Cr2O15 framework. In the SrU2Cr2O15 framework, Sr(1) is bonded in a 5-coordinate geometry to one O(1), one O(13), one O(14), one O(15), and one O(3) atom. There are two inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(10), one O(11), one O(2), one O(7), and two equivalent O(5) atoms to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one Cr(1)O4 tetrahedra, corners with two equivalent Cr(2)O4 tetrahedra, and  an edgeedge with one U(1)O7 pentagonal bipyramid. In the second U site, U(2) is bonded to one O(12), one O(13), one O(3), one O(4), one O(8), and two equivalent O(6) atoms to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one Cr(2)O4 tetrahedra, corners with two equivalent Cr(1)O4 tetrahedra, and  an edgeedge with one U(2)O7 pentagonal bipyramid. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(11), one O(12), one O(13), and one O(14) atom to form CrO4 tetrahedra that share  a cornercorner with one U(1)O7 pentagonal bipyramid and corners with two equivalent U(2)O7 pentagonal bipyramids. In the second Cr site, Cr(2) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form CrO4 tetrahedra that share  a cornercorner with one U(2)O7 pentagonal bipyramid and corners with two equivalent U(1)O7 pentagonal bipyramids. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Sr(1) and one U(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one U(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Sr(1) and one U(2) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one U(2) atom. In the fifth O site, O(5) is bonded in a water-like geometry to two equivalent U(1) atoms. In the sixth O site, O(6) is bonded in a water-like geometry to two equivalent U(2) atoms. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one U(1) and one Cr(2) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one U(2) and one Cr(2) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Cr(2) and one O(15) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one U(1) and one Cr(2) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one U(1) and one Cr(1) atom. In the twelfth O site, O(12) is bonded in a distorted bent 150 degrees geometry to one U(2) and one Cr(1) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Sr(1), one U(2), and one Cr(1) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one Cr(1) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one Sr(1) and one O(9) atom. is represented by the CIF file [CIF]
data_SrU2Cr2O22
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.079
_cell_length_b   10.005
_cell_length_c   11.211
_cell_angle_alpha   108.925
_cell_angle_beta   96.781
_cell_angle_gamma   94.189
_symmetry_Int_Tables_number   1
_cell_volume   949.841
_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  0.749  0.365  0.329  1.0
  Sr  Sr1  1  0.251  0.635  0.671  1.0
  U  U2  1  0.956  0.644  0.955  1.0
  U  U3  1  0.044  0.356  0.045  1.0
  U  U4  1  0.524  0.856  0.552  1.0
  U  U5  1  0.476  0.144  0.448  1.0
  Cr  Cr6  1  0.648  0.533  0.653  1.0
  Cr  Cr7  1  0.352  0.467  0.347  1.0
  Cr  Cr8  1  0.766  0.993  0.909  1.0
  Cr  Cr9  1  0.234  0.007  0.091  1.0
  O  O10  1  0.069  0.615  0.820  1.0
  O  O11  1  0.931  0.385  0.180  1.0
  O  O12  1  0.848  0.710  0.085  1.0
  O  O13  1  0.152  0.290  0.915  1.0
  O  O14  1  0.332  0.837  0.594  1.0
  O  O15  1  0.668  0.163  0.406  1.0
  O  O16  1  0.718  0.846  0.527  1.0
  O  O17  1  0.282  0.154  0.473  1.0
  O  O18  1  0.886  0.428  0.931  1.0
  O  O19  1  0.114  0.572  0.069  1.0
  O  O20  1  0.460  0.917  0.390  1.0
  O  O21  1  0.540  0.083  0.610  1.0
  O  O22  1  0.873  0.870  0.914  1.0
  O  O23  1  0.127  0.130  0.086  1.0
  O  O24  1  0.632  0.938  0.788  1.0
  O  O25  1  0.368  0.062  0.212  1.0
  O  O26  1  0.689  0.038  0.068  1.0
  O  O27  1  0.311  0.962  0.932  1.0
  O  O28  1  0.863  0.141  0.920  1.0
  O  O29  1  0.137  0.859  0.080  1.0
  O  O30  1  0.736  0.588  0.802  1.0
  O  O31  1  0.264  0.412  0.198  1.0
  O  O32  1  0.556  0.373  0.618  1.0
  O  O33  1  0.444  0.627  0.383  1.0
  O  O34  1  0.522  0.647  0.641  1.0
  O  O35  1  0.478  0.353  0.359  1.0
  O  O36  1  0.770  0.526  0.553  1.0
  O  O37  1  0.230  0.474  0.447  1.0
  O  O38  1  0.638  0.161  0.100  1.0
  O  O39  1  0.362  0.839  0.900  1.0
  O  O40  1  0.642  0.624  0.226  1.0
  O  O41  1  0.358  0.376  0.774  1.0
  O  O42  1  0.420  0.290  0.825  1.0
  O  O43  1  0.580  0.710  0.175  1.0
  O  O44  1  0.527  0.343  0.916  1.0
  O  O45  1  0.473  0.657  0.084  1.0
  O  O46  1  0.077  0.006  0.627  1.0
  O  O47  1  0.923  0.994  0.373  1.0
  O  O48  1  0.928  0.259  0.652  1.0
  O  O49  1  0.072  0.741  0.348  1.0
  O  O50  1  0.998  0.319  0.592  1.0
  O  O51  1  0.002  0.681  0.408  1.0
  O  O52  1  0.959  0.092  0.335  1.0
  O  O53  1  0.041  0.908  0.665  1.0
[/CIF]
.