The material structure described by (Cr3B7O13)2F2 crystallizes in the cubic F-43c space group. The structure consists of eight hydrofluoric acid atoms inside a Cr3B7O13 framework. In the Cr3B7O13 framework, Cr(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. There are two inequivalent B sites. In the first B site, B(2) is bonded to four equivalent O(1) atoms to form corner-sharing BO4 tetrahedra. In the second B site, B(1) is bonded to one O(2) and three equivalent O(1) atoms to form corner-sharing BO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(2) is bonded in a tetrahedral geometry to four equivalent B(1) atoms. In the second O site, O(1) is bonded in a trigonal planar geometry to one Cr(1), one B(1), and one B(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr3B7O13F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.638
_cell_length_b   8.638
_cell_length_c   8.638
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   455.798
_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
  Cr  Cr0  1  0.500  0.000  0.000  1.0
  Cr  Cr1  1  0.000  0.500  0.500  1.0
  Cr  Cr2  1  0.000  0.500  0.000  1.0
  Cr  Cr3  1  0.500  0.000  0.500  1.0
  Cr  Cr4  1  0.000  0.000  0.500  1.0
  Cr  Cr5  1  0.500  0.500  0.000  1.0
  B  B6  1  0.080  0.080  0.080  1.0
  B  B7  1  0.080  0.080  0.760  1.0
  B  B8  1  0.080  0.760  0.080  1.0
  B  B9  1  0.580  0.580  0.580  1.0
  B  B10  1  0.760  0.080  0.080  1.0
  B  B11  1  0.580  0.580  0.260  1.0
  B  B12  1  0.260  0.580  0.580  1.0
  B  B13  1  0.580  0.260  0.580  1.0
  B  B14  1  0.750  0.250  0.250  1.0
  B  B15  1  0.250  0.750  0.750  1.0
  B  B16  1  0.250  0.750  0.250  1.0
  B  B17  1  0.750  0.250  0.750  1.0
  B  B18  1  0.250  0.250  0.750  1.0
  B  B19  1  0.750  0.750  0.250  1.0
  O  O20  1  0.257  0.103  0.936  1.0
  O  O21  1  0.103  0.257  0.704  1.0
  O  O22  1  0.936  0.704  0.257  1.0
  O  O23  1  0.936  0.257  0.103  1.0
  O  O24  1  0.603  0.757  0.436  1.0
  O  O25  1  0.704  0.936  0.103  1.0
  O  O26  1  0.704  0.103  0.257  1.0
  O  O27  1  0.757  0.603  0.204  1.0
  O  O28  1  0.257  0.936  0.704  1.0
  O  O29  1  0.204  0.436  0.757  1.0
  O  O30  1  0.103  0.704  0.936  1.0
  O  O31  1  0.436  0.204  0.603  1.0
  O  O32  1  0.103  0.936  0.257  1.0
  O  O33  1  0.757  0.436  0.603  1.0
  O  O34  1  0.704  0.257  0.936  1.0
  O  O35  1  0.436  0.757  0.204  1.0
  O  O36  1  0.936  0.103  0.704  1.0
  O  O37  1  0.204  0.603  0.436  1.0
  O  O38  1  0.257  0.704  0.103  1.0
  O  O39  1  0.603  0.204  0.757  1.0
  O  O40  1  0.436  0.603  0.757  1.0
  O  O41  1  0.204  0.757  0.603  1.0
  O  O42  1  0.603  0.436  0.204  1.0
  O  O43  1  0.757  0.204  0.436  1.0
  O  O44  1  0.000  0.000  0.000  1.0
  O  O45  1  0.500  0.500  0.500  1.0
  F  F46  1  0.250  0.250  0.250  1.0
  F  F47  1  0.750  0.750  0.750  1.0
[/CIF]
.
The material structure described by (Cr3B7O13)2F2 crystallizes in the cubic F-43c space group. The structure consists of eight hydrofluoric acid atoms inside a Cr3B7O13 framework. In the Cr3B7O13 framework, Cr(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. There are two inequivalent B sites. In the first B site, B(2) is bonded to four equivalent O(1) atoms to form corner-sharing BO4 tetrahedra. In the second B site, B(1) is bonded to one O(2) and three equivalent O(1) atoms to form corner-sharing BO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(2) is bonded in a tetrahedral geometry to four equivalent B(1) atoms. In the second O site, O(1) is bonded in a trigonal planar geometry to one Cr(1), one B(1), and one B(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr3B7O13F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.638
_cell_length_b   8.638
_cell_length_c   8.638
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   455.798
_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
  Cr  Cr0  1  0.500  0.000  0.000  1.0
  Cr  Cr1  1  0.000  0.500  0.500  1.0
  Cr  Cr2  1  0.000  0.500  0.000  1.0
  Cr  Cr3  1  0.500  0.000  0.500  1.0
  Cr  Cr4  1  0.000  0.000  0.500  1.0
  Cr  Cr5  1  0.500  0.500  0.000  1.0
  B  B6  1  0.080  0.080  0.080  1.0
  B  B7  1  0.080  0.080  0.760  1.0
  B  B8  1  0.080  0.760  0.080  1.0
  B  B9  1  0.580  0.580  0.580  1.0
  B  B10  1  0.760  0.080  0.080  1.0
  B  B11  1  0.580  0.580  0.260  1.0
  B  B12  1  0.260  0.580  0.580  1.0
  B  B13  1  0.580  0.260  0.580  1.0
  B  B14  1  0.750  0.250  0.250  1.0
  B  B15  1  0.250  0.750  0.750  1.0
  B  B16  1  0.250  0.750  0.250  1.0
  B  B17  1  0.750  0.250  0.750  1.0
  B  B18  1  0.250  0.250  0.750  1.0
  B  B19  1  0.750  0.750  0.250  1.0
  O  O20  1  0.257  0.103  0.936  1.0
  O  O21  1  0.103  0.257  0.704  1.0
  O  O22  1  0.936  0.704  0.257  1.0
  O  O23  1  0.936  0.257  0.103  1.0
  O  O24  1  0.603  0.757  0.436  1.0
  O  O25  1  0.704  0.936  0.103  1.0
  O  O26  1  0.704  0.103  0.257  1.0
  O  O27  1  0.757  0.603  0.204  1.0
  O  O28  1  0.257  0.936  0.704  1.0
  O  O29  1  0.204  0.436  0.757  1.0
  O  O30  1  0.103  0.704  0.936  1.0
  O  O31  1  0.436  0.204  0.603  1.0
  O  O32  1  0.103  0.936  0.257  1.0
  O  O33  1  0.757  0.436  0.603  1.0
  O  O34  1  0.704  0.257  0.936  1.0
  O  O35  1  0.436  0.757  0.204  1.0
  O  O36  1  0.936  0.103  0.704  1.0
  O  O37  1  0.204  0.603  0.436  1.0
  O  O38  1  0.257  0.704  0.103  1.0
  O  O39  1  0.603  0.204  0.757  1.0
  O  O40  1  0.436  0.603  0.757  1.0
  O  O41  1  0.204  0.757  0.603  1.0
  O  O42  1  0.603  0.436  0.204  1.0
  O  O43  1  0.757  0.204  0.436  1.0
  O  O44  1  0.000  0.000  0.000  1.0
  O  O45  1  0.500  0.500  0.500  1.0
  F  F46  1  0.250  0.250  0.250  1.0
  F  F47  1  0.750  0.750  0.750  1.0
[/CIF]
.