The material described by Ba8Sr(BN2)6 crystallizes in the cubic Pm-3m space group. Ba(1) is bonded to three equivalent N(1) and three equivalent N(2) atoms to form distorted BaN6 octahedra that share corners with six equivalent Ba(1)N6 octahedra, edges with six equivalent Ba(1)N6 octahedra, and  a faceface with one Sr(1)N6 octahedra. The corner-sharing octahedral tilt angles range from 21-31°. Sr(1) is bonded to six equivalent N(2) atoms to form SrN6 octahedra that share faces with eight equivalent Ba(1)N6 octahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a linear geometry to two equivalent N(2) atoms. In the second B site, B(2) is bonded in a linear geometry to two equivalent N(1) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted single-bond geometry to four equivalent Ba(1) and one B(2) atom. In the second N site, N(2) is bonded in a 6-coordinate geometry to four equivalent Ba(1), one Sr(1), and one B(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba8Sr(BN2)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.048
_cell_length_b   8.048
_cell_length_c   8.048
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   521.234
_cell_formula_units_Z   1
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
  Ba  Ba0  1  0.738  0.738  0.262  1.0
  Ba  Ba1  1  0.262  0.262  0.738  1.0
  Ba  Ba2  1  0.738  0.262  0.738  1.0
  Ba  Ba3  1  0.262  0.738  0.262  1.0
  Ba  Ba4  1  0.262  0.738  0.738  1.0
  Ba  Ba5  1  0.738  0.262  0.262  1.0
  Ba  Ba6  1  0.738  0.738  0.738  1.0
  Ba  Ba7  1  0.262  0.262  0.262  1.0
  Sr  Sr8  1  0.000  0.000  0.000  1.0
  B  B9  1  0.500  0.000  0.000  1.0
  B  B10  1  0.000  0.500  0.500  1.0
  B  B11  1  0.000  0.000  0.500  1.0
  B  B12  1  0.500  0.500  0.000  1.0
  B  B13  1  0.000  0.500  0.000  1.0
  B  B14  1  0.500  0.000  0.500  1.0
  N  N15  1  0.500  0.500  0.168  1.0
  N  N16  1  0.000  0.000  0.669  1.0
  N  N17  1  0.000  0.331  0.000  1.0
  N  N18  1  0.500  0.832  0.500  1.0
  N  N19  1  0.331  0.000  0.000  1.0
  N  N20  1  0.832  0.500  0.500  1.0
  N  N21  1  0.000  0.000  0.331  1.0
  N  N22  1  0.500  0.500  0.832  1.0
  N  N23  1  0.000  0.669  0.000  1.0
  N  N24  1  0.500  0.168  0.500  1.0
  N  N25  1  0.669  0.000  0.000  1.0
  N  N26  1  0.168  0.500  0.500  1.0
[/CIF]
.
The material described by Ba8Sr(BN2)6 crystallizes in the cubic Pm-3m space group. Ba(1) is bonded to three equivalent N(1) and three equivalent N(2) atoms to form distorted BaN6 octahedra that share corners with six equivalent Ba(1)N6 octahedra, edges with six equivalent Ba(1)N6 octahedra, and  a faceface with one Sr(1)N6 octahedra. The corner-sharing octahedral tilt angles range from 21-31°. Sr(1) is bonded to six equivalent N(2) atoms to form SrN6 octahedra that share faces with eight equivalent Ba(1)N6 octahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a linear geometry to two equivalent N(2) atoms. In the second B site, B(2) is bonded in a linear geometry to two equivalent N(1) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted single-bond geometry to four equivalent Ba(1) and one B(2) atom. In the second N site, N(2) is bonded in a 6-coordinate geometry to four equivalent Ba(1), one Sr(1), and one B(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba8Sr(BN2)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.048
_cell_length_b   8.048
_cell_length_c   8.048
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   521.234
_cell_formula_units_Z   1
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
  Ba  Ba0  1  0.738  0.738  0.262  1.0
  Ba  Ba1  1  0.262  0.262  0.738  1.0
  Ba  Ba2  1  0.738  0.262  0.738  1.0
  Ba  Ba3  1  0.262  0.738  0.262  1.0
  Ba  Ba4  1  0.262  0.738  0.738  1.0
  Ba  Ba5  1  0.738  0.262  0.262  1.0
  Ba  Ba6  1  0.738  0.738  0.738  1.0
  Ba  Ba7  1  0.262  0.262  0.262  1.0
  Sr  Sr8  1  0.000  0.000  0.000  1.0
  B  B9  1  0.500  0.000  0.000  1.0
  B  B10  1  0.000  0.500  0.500  1.0
  B  B11  1  0.000  0.000  0.500  1.0
  B  B12  1  0.500  0.500  0.000  1.0
  B  B13  1  0.000  0.500  0.000  1.0
  B  B14  1  0.500  0.000  0.500  1.0
  N  N15  1  0.500  0.500  0.168  1.0
  N  N16  1  0.000  0.000  0.669  1.0
  N  N17  1  0.000  0.331  0.000  1.0
  N  N18  1  0.500  0.832  0.500  1.0
  N  N19  1  0.331  0.000  0.000  1.0
  N  N20  1  0.832  0.500  0.500  1.0
  N  N21  1  0.000  0.000  0.331  1.0
  N  N22  1  0.500  0.500  0.832  1.0
  N  N23  1  0.000  0.669  0.000  1.0
  N  N24  1  0.500  0.168  0.500  1.0
  N  N25  1  0.669  0.000  0.000  1.0
  N  N26  1  0.168  0.500  0.500  1.0
[/CIF]
.