The material structure described by Sr19In8N7 crystallizes in the cubic Fm-3m space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a linear geometry to four equivalent In(1), one N(1), and one N(2) atom. In the second Sr site, Sr(2) is bonded in an L-shaped geometry to four equivalent In(1) and two equivalent N(1) atoms. In the third Sr site, Sr(3) is bonded in an octahedral geometry to six equivalent N(1) atoms. In(1) is bonded to three equivalent Sr(1), six equivalent Sr(2), and three equivalent In(1) atoms to form InSr9In3 cuboctahedra that share corners with three equivalent In(1)Sr9In3 cuboctahedra, corners with six equivalent N(1)Sr6 octahedra, edges with three equivalent In(1)Sr9In3 cuboctahedra, faces with six equivalent In(1)Sr9In3 cuboctahedra,  a faceface with one N(2)Sr6 octahedra, and faces with three equivalent N(1)Sr6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Sr(1), one Sr(3), and four equivalent Sr(2) atoms to form NSr6 octahedra that share corners with eight equivalent In(1)Sr9In3 cuboctahedra,  a cornercorner with one N(1)Sr6 octahedra,  a cornercorner with one N(2)Sr6 octahedra, edges with four equivalent N(1)Sr6 octahedra, and faces with four equivalent In(1)Sr9In3 cuboctahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to six equivalent Sr(1) atoms to form NSr6 octahedra that share corners with six equivalent N(1)Sr6 octahedra and faces with eight equivalent In(1)Sr9In3 cuboctahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_Sr19In8N7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.073
_cell_length_b   11.073
_cell_length_c   11.073
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   959.939
_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
  Sr  Sr0  1  0.167  0.833  0.167  1.0
  Sr  Sr1  1  0.830  0.500  0.170  1.0
  Sr  Sr2  1  0.830  0.500  0.500  1.0
  Sr  Sr3  1  0.833  0.167  0.167  1.0
  Sr  Sr4  1  0.830  0.170  0.500  1.0
  Sr  Sr5  1  0.833  0.167  0.833  1.0
  Sr  Sr6  1  0.170  0.500  0.830  1.0
  Sr  Sr7  1  0.500  0.500  0.830  1.0
  Sr  Sr8  1  0.167  0.167  0.833  1.0
  Sr  Sr9  1  0.500  0.500  0.170  1.0
  Sr  Sr10  1  0.500  0.170  0.500  1.0
  Sr  Sr11  1  0.500  0.830  0.500  1.0
  Sr  Sr12  1  0.170  0.830  0.500  1.0
  Sr  Sr13  1  0.170  0.500  0.500  1.0
  Sr  Sr14  1  0.500  0.500  0.500  1.0
  Sr  Sr15  1  0.167  0.833  0.833  1.0
  Sr  Sr16  1  0.500  0.170  0.830  1.0
  Sr  Sr17  1  0.500  0.830  0.170  1.0
  Sr  Sr18  1  0.833  0.833  0.167  1.0
  In  In19  1  0.179  0.179  0.464  1.0
  In  In20  1  0.821  0.821  0.536  1.0
  In  In21  1  0.821  0.536  0.821  1.0
  In  In22  1  0.179  0.464  0.179  1.0
  In  In23  1  0.179  0.179  0.179  1.0
  In  In24  1  0.464  0.179  0.179  1.0
  In  In25  1  0.821  0.821  0.821  1.0
  In  In26  1  0.536  0.821  0.821  1.0
  N  N27  1  0.326  0.326  0.674  1.0
  N  N28  1  0.674  0.674  0.326  1.0
  N  N29  1  0.674  0.326  0.674  1.0
  N  N30  1  0.326  0.674  0.326  1.0
  N  N31  1  0.674  0.326  0.326  1.0
  N  N32  1  0.326  0.674  0.674  1.0
  N  N33  1  0.000  1.000  0.000  1.0
[/CIF]
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The material structure described by Sr19In8N7 crystallizes in the cubic Fm-3m space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a linear geometry to four equivalent In(1), one N(1), and one N(2) atom. In the second Sr site, Sr(2) is bonded in an L-shaped geometry to four equivalent In(1) and two equivalent N(1) atoms. In the third Sr site, Sr(3) is bonded in an octahedral geometry to six equivalent N(1) atoms. In(1) is bonded to three equivalent Sr(1), six equivalent Sr(2), and three equivalent In(1) atoms to form InSr9In3 cuboctahedra that share corners with three equivalent In(1)Sr9In3 cuboctahedra, corners with six equivalent N(1)Sr6 octahedra, edges with three equivalent In(1)Sr9In3 cuboctahedra, faces with six equivalent In(1)Sr9In3 cuboctahedra,  a faceface with one N(2)Sr6 octahedra, and faces with three equivalent N(1)Sr6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Sr(1), one Sr(3), and four equivalent Sr(2) atoms to form NSr6 octahedra that share corners with eight equivalent In(1)Sr9In3 cuboctahedra,  a cornercorner with one N(1)Sr6 octahedra,  a cornercorner with one N(2)Sr6 octahedra, edges with four equivalent N(1)Sr6 octahedra, and faces with four equivalent In(1)Sr9In3 cuboctahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to six equivalent Sr(1) atoms to form NSr6 octahedra that share corners with six equivalent N(1)Sr6 octahedra and faces with eight equivalent In(1)Sr9In3 cuboctahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_Sr19In8N7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.073
_cell_length_b   11.073
_cell_length_c   11.073
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   959.939
_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
  Sr  Sr0  1  0.167  0.833  0.167  1.0
  Sr  Sr1  1  0.830  0.500  0.170  1.0
  Sr  Sr2  1  0.830  0.500  0.500  1.0
  Sr  Sr3  1  0.833  0.167  0.167  1.0
  Sr  Sr4  1  0.830  0.170  0.500  1.0
  Sr  Sr5  1  0.833  0.167  0.833  1.0
  Sr  Sr6  1  0.170  0.500  0.830  1.0
  Sr  Sr7  1  0.500  0.500  0.830  1.0
  Sr  Sr8  1  0.167  0.167  0.833  1.0
  Sr  Sr9  1  0.500  0.500  0.170  1.0
  Sr  Sr10  1  0.500  0.170  0.500  1.0
  Sr  Sr11  1  0.500  0.830  0.500  1.0
  Sr  Sr12  1  0.170  0.830  0.500  1.0
  Sr  Sr13  1  0.170  0.500  0.500  1.0
  Sr  Sr14  1  0.500  0.500  0.500  1.0
  Sr  Sr15  1  0.167  0.833  0.833  1.0
  Sr  Sr16  1  0.500  0.170  0.830  1.0
  Sr  Sr17  1  0.500  0.830  0.170  1.0
  Sr  Sr18  1  0.833  0.833  0.167  1.0
  In  In19  1  0.179  0.179  0.464  1.0
  In  In20  1  0.821  0.821  0.536  1.0
  In  In21  1  0.821  0.536  0.821  1.0
  In  In22  1  0.179  0.464  0.179  1.0
  In  In23  1  0.179  0.179  0.179  1.0
  In  In24  1  0.464  0.179  0.179  1.0
  In  In25  1  0.821  0.821  0.821  1.0
  In  In26  1  0.536  0.821  0.821  1.0
  N  N27  1  0.326  0.326  0.674  1.0
  N  N28  1  0.674  0.674  0.326  1.0
  N  N29  1  0.674  0.326  0.674  1.0
  N  N30  1  0.326  0.674  0.326  1.0
  N  N31  1  0.674  0.326  0.326  1.0
  N  N32  1  0.326  0.674  0.674  1.0
  N  N33  1  0.000  1.000  0.000  1.0
[/CIF]
.