The material structure described by Ca19Ag8N7 crystallizes in the cubic Fm-3m space group. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a distorted L-shaped geometry to four equivalent Ag(1) and two equivalent N(2) atoms. In the second Ca site, Ca(2) is bonded in an octahedral geometry to six equivalent N(2) atoms. In the third Ca site, Ca(3) is bonded in a linear geometry to four equivalent Ag(1), one N(1), and one N(2) atom. Ag(1) is bonded to three equivalent Ca(3), six equivalent Ca(1), and three equivalent Ag(1) atoms to form AgCa9Ag3 cuboctahedra that share corners with three equivalent Ag(1)Ca9Ag3 cuboctahedra, corners with six equivalent N(2)Ca6 octahedra, edges with three equivalent Ag(1)Ca9Ag3 cuboctahedra, faces with six equivalent Ag(1)Ca9Ag3 cuboctahedra,  a faceface with one N(1)Ca6 octahedra, and faces with three equivalent N(2)Ca6 octahedra. The corner-sharing octahedral tilt angles are 48°. There are two inequivalent N sites. In the first N site, N(1) is bonded to six equivalent Ca(3) atoms to form NCa6 octahedra that share corners with six equivalent N(2)Ca6 octahedra and faces with eight equivalent Ag(1)Ca9Ag3 cuboctahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to one Ca(2), one Ca(3), and four equivalent Ca(1) atoms to form NCa6 octahedra that share corners with eight equivalent Ag(1)Ca9Ag3 cuboctahedra,  a cornercorner with one N(1)Ca6 octahedra,  a cornercorner with one N(2)Ca6 octahedra, edges with four equivalent N(2)Ca6 octahedra, and faces with four equivalent Ag(1)Ca9Ag3 cuboctahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca19Ag8N7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.315
_cell_length_b   10.315
_cell_length_c   10.315
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   776.082
_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
  Ca  Ca0  1  0.829  0.500  0.500  1.0
  Ca  Ca1  1  0.500  0.500  0.500  1.0
  Ca  Ca2  1  0.835  0.835  0.165  1.0
  Ca  Ca3  1  0.835  0.165  0.165  1.0
  Ca  Ca4  1  0.165  0.835  0.835  1.0
  Ca  Ca5  1  0.835  0.165  0.835  1.0
  Ca  Ca6  1  0.165  0.835  0.165  1.0
  Ca  Ca7  1  0.165  0.165  0.835  1.0
  Ca  Ca8  1  0.171  0.500  0.500  1.0
  Ca  Ca9  1  0.171  0.829  0.500  1.0
  Ca  Ca10  1  0.500  0.500  0.171  1.0
  Ca  Ca11  1  0.171  0.500  0.829  1.0
  Ca  Ca12  1  0.500  0.171  0.500  1.0
  Ca  Ca13  1  0.500  0.829  0.171  1.0
  Ca  Ca14  1  0.500  0.171  0.829  1.0
  Ca  Ca15  1  0.500  0.500  0.829  1.0
  Ca  Ca16  1  0.829  0.500  0.171  1.0
  Ca  Ca17  1  0.500  0.829  0.500  1.0
  Ca  Ca18  1  0.829  0.171  0.500  1.0
  Ag  Ag19  1  0.176  0.471  0.176  1.0
  Ag  Ag20  1  0.824  0.824  0.529  1.0
  Ag  Ag21  1  0.824  0.824  0.824  1.0
  Ag  Ag22  1  0.529  0.824  0.824  1.0
  Ag  Ag23  1  0.176  0.176  0.176  1.0
  Ag  Ag24  1  0.471  0.176  0.176  1.0
  Ag  Ag25  1  0.176  0.176  0.471  1.0
  Ag  Ag26  1  0.824  0.529  0.824  1.0
  N  N27  1  0.000  0.000  0.000  1.0
  N  N28  1  0.326  0.326  0.674  1.0
  N  N29  1  0.326  0.674  0.326  1.0
  N  N30  1  0.674  0.326  0.674  1.0
  N  N31  1  0.326  0.674  0.674  1.0
  N  N32  1  0.674  0.326  0.326  1.0
  N  N33  1  0.674  0.674  0.326  1.0
[/CIF]
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The material structure described by Ca19Ag8N7 crystallizes in the cubic Fm-3m space group. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a distorted L-shaped geometry to four equivalent Ag(1) and two equivalent N(2) atoms. In the second Ca site, Ca(2) is bonded in an octahedral geometry to six equivalent N(2) atoms. In the third Ca site, Ca(3) is bonded in a linear geometry to four equivalent Ag(1), one N(1), and one N(2) atom. Ag(1) is bonded to three equivalent Ca(3), six equivalent Ca(1), and three equivalent Ag(1) atoms to form AgCa9Ag3 cuboctahedra that share corners with three equivalent Ag(1)Ca9Ag3 cuboctahedra, corners with six equivalent N(2)Ca6 octahedra, edges with three equivalent Ag(1)Ca9Ag3 cuboctahedra, faces with six equivalent Ag(1)Ca9Ag3 cuboctahedra,  a faceface with one N(1)Ca6 octahedra, and faces with three equivalent N(2)Ca6 octahedra. The corner-sharing octahedral tilt angles are 48°. There are two inequivalent N sites. In the first N site, N(1) is bonded to six equivalent Ca(3) atoms to form NCa6 octahedra that share corners with six equivalent N(2)Ca6 octahedra and faces with eight equivalent Ag(1)Ca9Ag3 cuboctahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to one Ca(2), one Ca(3), and four equivalent Ca(1) atoms to form NCa6 octahedra that share corners with eight equivalent Ag(1)Ca9Ag3 cuboctahedra,  a cornercorner with one N(1)Ca6 octahedra,  a cornercorner with one N(2)Ca6 octahedra, edges with four equivalent N(2)Ca6 octahedra, and faces with four equivalent Ag(1)Ca9Ag3 cuboctahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca19Ag8N7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.315
_cell_length_b   10.315
_cell_length_c   10.315
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   776.082
_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
  Ca  Ca0  1  0.829  0.500  0.500  1.0
  Ca  Ca1  1  0.500  0.500  0.500  1.0
  Ca  Ca2  1  0.835  0.835  0.165  1.0
  Ca  Ca3  1  0.835  0.165  0.165  1.0
  Ca  Ca4  1  0.165  0.835  0.835  1.0
  Ca  Ca5  1  0.835  0.165  0.835  1.0
  Ca  Ca6  1  0.165  0.835  0.165  1.0
  Ca  Ca7  1  0.165  0.165  0.835  1.0
  Ca  Ca8  1  0.171  0.500  0.500  1.0
  Ca  Ca9  1  0.171  0.829  0.500  1.0
  Ca  Ca10  1  0.500  0.500  0.171  1.0
  Ca  Ca11  1  0.171  0.500  0.829  1.0
  Ca  Ca12  1  0.500  0.171  0.500  1.0
  Ca  Ca13  1  0.500  0.829  0.171  1.0
  Ca  Ca14  1  0.500  0.171  0.829  1.0
  Ca  Ca15  1  0.500  0.500  0.829  1.0
  Ca  Ca16  1  0.829  0.500  0.171  1.0
  Ca  Ca17  1  0.500  0.829  0.500  1.0
  Ca  Ca18  1  0.829  0.171  0.500  1.0
  Ag  Ag19  1  0.176  0.471  0.176  1.0
  Ag  Ag20  1  0.824  0.824  0.529  1.0
  Ag  Ag21  1  0.824  0.824  0.824  1.0
  Ag  Ag22  1  0.529  0.824  0.824  1.0
  Ag  Ag23  1  0.176  0.176  0.176  1.0
  Ag  Ag24  1  0.471  0.176  0.176  1.0
  Ag  Ag25  1  0.176  0.176  0.471  1.0
  Ag  Ag26  1  0.824  0.529  0.824  1.0
  N  N27  1  0.000  0.000  0.000  1.0
  N  N28  1  0.326  0.326  0.674  1.0
  N  N29  1  0.326  0.674  0.326  1.0
  N  N30  1  0.674  0.326  0.674  1.0
  N  N31  1  0.326  0.674  0.674  1.0
  N  N32  1  0.674  0.326  0.326  1.0
  N  N33  1  0.674  0.674  0.326  1.0
[/CIF]
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