The crystal structure described by Sr8PbN6 crystallizes in the monoclinic Cm space group. There are fourteen inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a distorted trigonal planar geometry to one N(7) and two equivalent N(8) atoms. In the second Sr site, Sr(2) is bonded in a distorted trigonal planar geometry to one N(10), one N(3), and one N(9) atom. In the third Sr site, Sr(3) is bonded in a bent 150 degrees geometry to two equivalent N(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 4-coordinate geometry to one N(1), one N(10), and two equivalent N(6) atoms. In the fifth Sr site, Sr(5) is bonded in a 4-coordinate geometry to one N(4), one N(5), and two equivalent N(8) atoms. In the sixth Sr site, Sr(6) is bonded in a 3-coordinate geometry to one N(5) and two equivalent N(9) atoms. In the seventh Sr site, Sr(7) is bonded to one N(4), one N(6), and two equivalent N(10) atoms to form distorted SrN4 trigonal pyramids that share corners with two equivalent Sr(7)N4 trigonal pyramids,  an edgeedge with one Sr(11)N6 octahedra, and edges with two equivalent Sr(13)N5 trigonal bipyramids. In the eighth Sr site, Sr(8) is bonded to one N(3), one N(5), and two equivalent N(2) atoms to form a mixture of distorted corner and edge-sharing SrN4 tetrahedra. In the ninth Sr site, Sr(9) is bonded in a 4-coordinate geometry to two equivalent N(4) and two equivalent N(8) atoms. In the tenth Sr site, Sr(10) is bonded in a distorted bent 120 degrees geometry to one N(2) and one N(7) atom. In the eleventh Sr site, Sr(11) is bonded to two equivalent N(1), two equivalent N(4), and two equivalent N(6) atoms to form SrN6 octahedra that share corners with two equivalent Sr(11)N6 octahedra, edges with four equivalent Sr(13)N5 trigonal bipyramids, and edges with two equivalent Sr(7)N4 trigonal pyramids. The corner-sharing octahedral tilt angles are 3°. In the twelfth Sr site, Sr(12) is bonded in a distorted T-shaped geometry to one N(2), one N(3), and one N(9) atom. In the thirteenth Sr site, Sr(13) is bonded to one N(1), one N(10), one N(8), and two equivalent N(4) atoms to form distorted SrN5 trigonal bipyramids that share corners with three equivalent Sr(13)N5 trigonal bipyramids,  a cornercorner with one Sr(14)N4 trigonal pyramid, edges with two equivalent Sr(11)N6 octahedra, and edges with two equivalent Sr(7)N4 trigonal pyramids. In the fourteenth Sr site, Sr(14) is bonded to one N(2), one N(8), and two equivalent N(5) atoms to form distorted SrN4 trigonal pyramids that share  a cornercorner with one Sr(13)N5 trigonal bipyramid, corners with two equivalent Sr(14)N4 trigonal pyramids, and edges with two equivalent Sr(8)N4 tetrahedra. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted water-like geometry to two equivalent N(6) atoms. In the second Pb site, Pb(2) is bonded in a distorted water-like geometry to one N(10) and one N(3) atom. There are ten inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Sr(11), two equivalent Sr(13), and two equivalent Sr(4) atoms to form NSr6 octahedra that share corners with two equivalent N(1)Sr6 octahedra, edges with four equivalent N(4)Sr6 octahedra, and edges with four equivalent N(6)Sr4Pb square pyramids. The corner-sharing octahedral tilt angles are 3°. In the second N site, N(2) is bonded in a 5-coordinate geometry to one Sr(10), one Sr(12), one Sr(14), and two equivalent Sr(8) atoms. In the third N site, N(3) is bonded in a see-saw-like geometry to one Sr(12), one Sr(2), one Sr(8), and one Pb(2) atom. In the fourth N site, N(4) is bonded to one Sr(11), one Sr(5), one Sr(7), one Sr(9), and two equivalent Sr(13) atoms to form NSr6 octahedra that share corners with two equivalent N(4)Sr6 octahedra,  a cornercorner with one N(6)Sr4Pb square pyramid,  a cornercorner with one N(5)Sr5 trigonal bipyramid,  an edgeedge with one N(4)Sr6 octahedra, edges with two equivalent N(1)Sr6 octahedra, and  an edgeedge with one N(6)Sr4Pb square pyramid. The corner-sharing octahedral tilt angles are 7°. In the fifth N site, N(5) is bonded to one Sr(5), one Sr(6), one Sr(8), and two equivalent Sr(14) atoms to form distorted NSr5 trigonal bipyramids that share  a cornercorner with one N(4)Sr6 octahedra, corners with two equivalent N(5)Sr5 trigonal bipyramids, and corners with two equivalent N(9)Sr4 trigonal pyramids. The corner-sharing octahedral tilt angles are 17°. In the sixth N site, N(6) is bonded to one Sr(11), one Sr(7), two equivalent Sr(4), and one Pb(1) atom to form NSr4Pb square pyramids that share  a cornercorner with one N(4)Sr6 octahedra, corners with two equivalent N(6)Sr4Pb square pyramids,  an edgeedge with one N(4)Sr6 octahedra, edges with two equivalent N(1)Sr6 octahedra, and  an edgeedge with one N(6)Sr4Pb square pyramid. The corner-sharing octahedral tilt angles are 6°. In the seventh N site, N(7) is bonded to one Sr(1), two equivalent Sr(10), and two equivalent Sr(3) atoms to form corner-sharing NSr5 trigonal bipyramids. In the eighth N site, N(8) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(13), one Sr(14), one Sr(9), and two equivalent Sr(5) atoms. In the ninth N site, N(9) is bonded to one Sr(12), one Sr(2), and two equivalent Sr(6) atoms to form distorted NSr4 trigonal pyramids that share corners with two equivalent N(5)Sr5 trigonal bipyramids and corners with two equivalent N(9)Sr4 trigonal pyramids. In the tenth N site, N(10) is bonded in a 6-coordinate geometry to one Sr(13), one Sr(2), one Sr(4), two equivalent Sr(7), and one Pb(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr8PbN6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   16.878
_cell_length_b   16.057
_cell_length_c   4.985
_cell_angle_alpha   91.635
_cell_angle_beta   89.222
_cell_angle_gamma   118.403
_symmetry_Int_Tables_number   1
_cell_volume   1187.975
_cell_formula_units_Z   3
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  0.000  0.649  0.451  1.0
  Sr  Sr1  1  0.545  0.010  0.494  1.0
  Sr  Sr2  1  0.455  0.465  0.494  1.0
  Sr  Sr3  1  0.000  0.798  0.973  1.0
  Sr  Sr4  1  0.866  0.101  0.407  1.0
  Sr  Sr5  1  0.134  0.236  0.407  1.0
  Sr  Sr6  1  0.203  0.646  0.987  1.0
  Sr  Sr7  1  0.448  0.810  0.003  1.0
  Sr  Sr8  1  0.245  0.389  0.909  1.0
  Sr  Sr9  1  0.797  0.443  0.987  1.0
  Sr  Sr10  1  0.755  0.144  0.909  1.0
  Sr  Sr11  1  0.552  0.362  0.003  1.0
  Sr  Sr12  1  0.667  0.650  0.032  1.0
  Sr  Sr13  1  0.000  0.484  0.893  1.0
  Sr  Sr14  1  0.333  0.983  0.032  1.0
  Sr  Sr15  1  0.864  0.851  0.498  1.0
  Sr  Sr16  1  0.000  0.272  0.924  1.0
  Sr  Sr17  1  0.136  0.987  0.498  1.0
  Sr  Sr18  1  0.584  0.747  0.518  1.0
  Sr  Sr19  1  0.142  0.465  0.435  1.0
  Sr  Sr20  1  0.262  0.815  0.510  1.0
  Sr  Sr21  1  0.416  0.163  0.518  1.0
  Sr  Sr22  1  0.738  0.552  0.510  1.0
  Sr  Sr23  1  0.858  0.323  0.435  1.0
  Pb  Pb24  1  0.000  0.058  0.913  1.0
  Pb  Pb25  1  0.366  0.589  0.259  1.0
  Pb  Pb26  1  0.634  0.222  0.259  1.0
  N  N27  1  0.000  0.276  0.425  1.0
  N  N28  1  0.280  0.993  0.533  1.0
  N  N29  1  0.720  0.713  0.533  1.0
  N  N30  1  0.503  0.608  0.180  1.0
  N  N31  1  0.134  0.454  0.935  1.0
  N  N32  1  0.309  0.819  0.007  1.0
  N  N33  1  0.497  0.105  0.180  1.0
  N  N34  1  0.691  0.510  0.007  1.0
  N  N35  1  0.866  0.321  0.935  1.0
  N  N36  1  0.122  0.205  0.906  1.0
  N  N37  1  0.000  0.824  0.475  1.0
  N  N38  1  0.878  0.084  0.906  1.0
  N  N39  1  0.131  0.625  0.495  1.0
  N  N40  1  0.507  0.844  0.502  1.0
  N  N41  1  0.293  0.435  0.414  1.0
  N  N42  1  0.869  0.493  0.495  1.0
  N  N43  1  0.707  0.142  0.414  1.0
  N  N44  1  0.493  0.337  0.502  1.0
[/CIF]
.
The crystal structure described by Sr8PbN6 crystallizes in the monoclinic Cm space group. There are fourteen inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a distorted trigonal planar geometry to one N(7) and two equivalent N(8) atoms. In the second Sr site, Sr(2) is bonded in a distorted trigonal planar geometry to one N(10), one N(3), and one N(9) atom. In the third Sr site, Sr(3) is bonded in a bent 150 degrees geometry to two equivalent N(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 4-coordinate geometry to one N(1), one N(10), and two equivalent N(6) atoms. In the fifth Sr site, Sr(5) is bonded in a 4-coordinate geometry to one N(4), one N(5), and two equivalent N(8) atoms. In the sixth Sr site, Sr(6) is bonded in a 3-coordinate geometry to one N(5) and two equivalent N(9) atoms. In the seventh Sr site, Sr(7) is bonded to one N(4), one N(6), and two equivalent N(10) atoms to form distorted SrN4 trigonal pyramids that share corners with two equivalent Sr(7)N4 trigonal pyramids,  an edgeedge with one Sr(11)N6 octahedra, and edges with two equivalent Sr(13)N5 trigonal bipyramids. In the eighth Sr site, Sr(8) is bonded to one N(3), one N(5), and two equivalent N(2) atoms to form a mixture of distorted corner and edge-sharing SrN4 tetrahedra. In the ninth Sr site, Sr(9) is bonded in a 4-coordinate geometry to two equivalent N(4) and two equivalent N(8) atoms. In the tenth Sr site, Sr(10) is bonded in a distorted bent 120 degrees geometry to one N(2) and one N(7) atom. In the eleventh Sr site, Sr(11) is bonded to two equivalent N(1), two equivalent N(4), and two equivalent N(6) atoms to form SrN6 octahedra that share corners with two equivalent Sr(11)N6 octahedra, edges with four equivalent Sr(13)N5 trigonal bipyramids, and edges with two equivalent Sr(7)N4 trigonal pyramids. The corner-sharing octahedral tilt angles are 3°. In the twelfth Sr site, Sr(12) is bonded in a distorted T-shaped geometry to one N(2), one N(3), and one N(9) atom. In the thirteenth Sr site, Sr(13) is bonded to one N(1), one N(10), one N(8), and two equivalent N(4) atoms to form distorted SrN5 trigonal bipyramids that share corners with three equivalent Sr(13)N5 trigonal bipyramids,  a cornercorner with one Sr(14)N4 trigonal pyramid, edges with two equivalent Sr(11)N6 octahedra, and edges with two equivalent Sr(7)N4 trigonal pyramids. In the fourteenth Sr site, Sr(14) is bonded to one N(2), one N(8), and two equivalent N(5) atoms to form distorted SrN4 trigonal pyramids that share  a cornercorner with one Sr(13)N5 trigonal bipyramid, corners with two equivalent Sr(14)N4 trigonal pyramids, and edges with two equivalent Sr(8)N4 tetrahedra. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted water-like geometry to two equivalent N(6) atoms. In the second Pb site, Pb(2) is bonded in a distorted water-like geometry to one N(10) and one N(3) atom. There are ten inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Sr(11), two equivalent Sr(13), and two equivalent Sr(4) atoms to form NSr6 octahedra that share corners with two equivalent N(1)Sr6 octahedra, edges with four equivalent N(4)Sr6 octahedra, and edges with four equivalent N(6)Sr4Pb square pyramids. The corner-sharing octahedral tilt angles are 3°. In the second N site, N(2) is bonded in a 5-coordinate geometry to one Sr(10), one Sr(12), one Sr(14), and two equivalent Sr(8) atoms. In the third N site, N(3) is bonded in a see-saw-like geometry to one Sr(12), one Sr(2), one Sr(8), and one Pb(2) atom. In the fourth N site, N(4) is bonded to one Sr(11), one Sr(5), one Sr(7), one Sr(9), and two equivalent Sr(13) atoms to form NSr6 octahedra that share corners with two equivalent N(4)Sr6 octahedra,  a cornercorner with one N(6)Sr4Pb square pyramid,  a cornercorner with one N(5)Sr5 trigonal bipyramid,  an edgeedge with one N(4)Sr6 octahedra, edges with two equivalent N(1)Sr6 octahedra, and  an edgeedge with one N(6)Sr4Pb square pyramid. The corner-sharing octahedral tilt angles are 7°. In the fifth N site, N(5) is bonded to one Sr(5), one Sr(6), one Sr(8), and two equivalent Sr(14) atoms to form distorted NSr5 trigonal bipyramids that share  a cornercorner with one N(4)Sr6 octahedra, corners with two equivalent N(5)Sr5 trigonal bipyramids, and corners with two equivalent N(9)Sr4 trigonal pyramids. The corner-sharing octahedral tilt angles are 17°. In the sixth N site, N(6) is bonded to one Sr(11), one Sr(7), two equivalent Sr(4), and one Pb(1) atom to form NSr4Pb square pyramids that share  a cornercorner with one N(4)Sr6 octahedra, corners with two equivalent N(6)Sr4Pb square pyramids,  an edgeedge with one N(4)Sr6 octahedra, edges with two equivalent N(1)Sr6 octahedra, and  an edgeedge with one N(6)Sr4Pb square pyramid. The corner-sharing octahedral tilt angles are 6°. In the seventh N site, N(7) is bonded to one Sr(1), two equivalent Sr(10), and two equivalent Sr(3) atoms to form corner-sharing NSr5 trigonal bipyramids. In the eighth N site, N(8) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(13), one Sr(14), one Sr(9), and two equivalent Sr(5) atoms. In the ninth N site, N(9) is bonded to one Sr(12), one Sr(2), and two equivalent Sr(6) atoms to form distorted NSr4 trigonal pyramids that share corners with two equivalent N(5)Sr5 trigonal bipyramids and corners with two equivalent N(9)Sr4 trigonal pyramids. In the tenth N site, N(10) is bonded in a 6-coordinate geometry to one Sr(13), one Sr(2), one Sr(4), two equivalent Sr(7), and one Pb(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr8PbN6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   16.878
_cell_length_b   16.057
_cell_length_c   4.985
_cell_angle_alpha   91.635
_cell_angle_beta   89.222
_cell_angle_gamma   118.403
_symmetry_Int_Tables_number   1
_cell_volume   1187.975
_cell_formula_units_Z   3
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  0.000  0.649  0.451  1.0
  Sr  Sr1  1  0.545  0.010  0.494  1.0
  Sr  Sr2  1  0.455  0.465  0.494  1.0
  Sr  Sr3  1  0.000  0.798  0.973  1.0
  Sr  Sr4  1  0.866  0.101  0.407  1.0
  Sr  Sr5  1  0.134  0.236  0.407  1.0
  Sr  Sr6  1  0.203  0.646  0.987  1.0
  Sr  Sr7  1  0.448  0.810  0.003  1.0
  Sr  Sr8  1  0.245  0.389  0.909  1.0
  Sr  Sr9  1  0.797  0.443  0.987  1.0
  Sr  Sr10  1  0.755  0.144  0.909  1.0
  Sr  Sr11  1  0.552  0.362  0.003  1.0
  Sr  Sr12  1  0.667  0.650  0.032  1.0
  Sr  Sr13  1  0.000  0.484  0.893  1.0
  Sr  Sr14  1  0.333  0.983  0.032  1.0
  Sr  Sr15  1  0.864  0.851  0.498  1.0
  Sr  Sr16  1  0.000  0.272  0.924  1.0
  Sr  Sr17  1  0.136  0.987  0.498  1.0
  Sr  Sr18  1  0.584  0.747  0.518  1.0
  Sr  Sr19  1  0.142  0.465  0.435  1.0
  Sr  Sr20  1  0.262  0.815  0.510  1.0
  Sr  Sr21  1  0.416  0.163  0.518  1.0
  Sr  Sr22  1  0.738  0.552  0.510  1.0
  Sr  Sr23  1  0.858  0.323  0.435  1.0
  Pb  Pb24  1  0.000  0.058  0.913  1.0
  Pb  Pb25  1  0.366  0.589  0.259  1.0
  Pb  Pb26  1  0.634  0.222  0.259  1.0
  N  N27  1  0.000  0.276  0.425  1.0
  N  N28  1  0.280  0.993  0.533  1.0
  N  N29  1  0.720  0.713  0.533  1.0
  N  N30  1  0.503  0.608  0.180  1.0
  N  N31  1  0.134  0.454  0.935  1.0
  N  N32  1  0.309  0.819  0.007  1.0
  N  N33  1  0.497  0.105  0.180  1.0
  N  N34  1  0.691  0.510  0.007  1.0
  N  N35  1  0.866  0.321  0.935  1.0
  N  N36  1  0.122  0.205  0.906  1.0
  N  N37  1  0.000  0.824  0.475  1.0
  N  N38  1  0.878  0.084  0.906  1.0
  N  N39  1  0.131  0.625  0.495  1.0
  N  N40  1  0.507  0.844  0.502  1.0
  N  N41  1  0.293  0.435  0.414  1.0
  N  N42  1  0.869  0.493  0.495  1.0
  N  N43  1  0.707  0.142  0.414  1.0
  N  N44  1  0.493  0.337  0.502  1.0
[/CIF]
.