The structure described by Ca5(SnN3)2 crystallizes in the monoclinic C2/c space group. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 5-coordinate geometry to one N(2), two equivalent N(1), and two equivalent N(3) atoms. In the second Ca site, Ca(2) is bonded to one N(3), two equivalent N(1), and two equivalent N(2) atoms to form distorted CaN5 trigonal bipyramids that share corners with two equivalent Sn(1)N4 tetrahedra, corners with two equivalent Ca(2)N5 trigonal bipyramids, corners with two equivalent Ca(3)N4 trigonal pyramids, edges with two equivalent Sn(1)N4 tetrahedra,  an edgeedge with one Ca(2)N5 trigonal bipyramid, and  an edgeedge with one Ca(3)N4 trigonal pyramid. In the third Ca site, Ca(3) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form distorted CaN4 trigonal pyramids that share corners with four equivalent Sn(1)N4 tetrahedra, corners with four equivalent Ca(2)N5 trigonal bipyramids, and edges with two equivalent Ca(2)N5 trigonal bipyramids. Sn(1) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form SnN4 tetrahedra that share corners with two equivalent Ca(2)N5 trigonal bipyramids, corners with two equivalent Ca(3)N4 trigonal pyramids,  an edgeedge with one Sn(1)N4 tetrahedra, and edges with two equivalent Ca(2)N5 trigonal bipyramids. There are three inequivalent N sites. In the first N site, N(2) is bonded to one Ca(1), one Ca(3), two equivalent Ca(2), and one Sn(1) atom to form NCa4Sn trigonal bipyramids that share corners with five equivalent N(1)Ca5Sn octahedra, corners with two equivalent N(3)Ca3Sn2 trigonal bipyramids, corners with three equivalent N(2)Ca4Sn trigonal bipyramids, edges with two equivalent N(1)Ca5Sn octahedra, and edges with two equivalent N(3)Ca3Sn2 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 2-70°. In the second N site, N(3) is bonded to one Ca(2), two equivalent Ca(1), and two equivalent Sn(1) atoms to form distorted NCa3Sn2 trigonal bipyramids that share corners with four equivalent N(1)Ca5Sn octahedra, corners with two equivalent N(2)Ca4Sn trigonal bipyramids, edges with two equivalent N(1)Ca5Sn octahedra, edges with two equivalent N(3)Ca3Sn2 trigonal bipyramids, and edges with two equivalent N(2)Ca4Sn trigonal bipyramids. The corner-sharing octahedral tilt angles range from 12-82°. In the third N site, N(1) is bonded to one Ca(3), two equivalent Ca(1), two equivalent Ca(2), and one Sn(1) atom to form distorted NCa5Sn octahedra that share corners with four equivalent N(3)Ca3Sn2 trigonal bipyramids, corners with five equivalent N(2)Ca4Sn trigonal bipyramids,  an edgeedge with one N(1)Ca5Sn octahedra, edges with two equivalent N(3)Ca3Sn2 trigonal bipyramids, edges with two equivalent N(2)Ca4Sn trigonal bipyramids, and  a faceface with one N(1)Ca5Sn octahedra. is represented by the CIF card [CIF]
data_Ca5(SnN3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.282
_cell_length_b   6.025
_cell_length_c   13.964
_cell_angle_alpha   90.000
_cell_angle_beta   94.423
_cell_angle_gamma   118.654
_symmetry_Int_Tables_number   1
_cell_volume   462.000
_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
  Ca  Ca0  1  0.196  0.848  0.030  1.0
  Ca  Ca1  1  0.804  0.651  0.470  1.0
  Ca  Ca2  1  0.804  0.152  0.970  1.0
  Ca  Ca3  1  0.196  0.349  0.530  1.0
  Ca  Ca4  1  0.293  0.056  0.716  1.0
  Ca  Ca5  1  0.707  0.763  0.784  1.0
  Ca  Ca6  1  0.707  0.944  0.284  1.0
  Ca  Ca7  1  0.293  0.237  0.216  1.0
  Ca  Ca8  1  0.000  0.379  0.750  1.0
  Ca  Ca9  1  0.000  0.621  0.250  1.0
  Sn  Sn10  1  0.586  0.929  0.587  1.0
  Sn  Sn11  1  0.414  0.343  0.913  1.0
  Sn  Sn12  1  0.414  0.071  0.413  1.0
  Sn  Sn13  1  0.586  0.657  0.087  1.0
  N  N14  1  0.935  0.027  0.636  1.0
  N  N15  1  0.065  0.092  0.864  1.0
  N  N16  1  0.065  0.973  0.364  1.0
  N  N17  1  0.935  0.908  0.136  1.0
  N  N18  1  0.330  0.682  0.675  1.0
  N  N19  1  0.670  0.352  0.825  1.0
  N  N20  1  0.670  0.318  0.325  1.0
  N  N21  1  0.330  0.648  0.175  1.0
  N  N22  1  0.519  0.243  0.556  1.0
  N  N23  1  0.481  0.725  0.944  1.0
  N  N24  1  0.481  0.757  0.444  1.0
  N  N25  1  0.519  0.275  0.056  1.0
[/CIF]
.
The structure described by Ca5(SnN3)2 crystallizes in the monoclinic C2/c space group. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 5-coordinate geometry to one N(2), two equivalent N(1), and two equivalent N(3) atoms. In the second Ca site, Ca(2) is bonded to one N(3), two equivalent N(1), and two equivalent N(2) atoms to form distorted CaN5 trigonal bipyramids that share corners with two equivalent Sn(1)N4 tetrahedra, corners with two equivalent Ca(2)N5 trigonal bipyramids, corners with two equivalent Ca(3)N4 trigonal pyramids, edges with two equivalent Sn(1)N4 tetrahedra,  an edgeedge with one Ca(2)N5 trigonal bipyramid, and  an edgeedge with one Ca(3)N4 trigonal pyramid. In the third Ca site, Ca(3) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form distorted CaN4 trigonal pyramids that share corners with four equivalent Sn(1)N4 tetrahedra, corners with four equivalent Ca(2)N5 trigonal bipyramids, and edges with two equivalent Ca(2)N5 trigonal bipyramids. Sn(1) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form SnN4 tetrahedra that share corners with two equivalent Ca(2)N5 trigonal bipyramids, corners with two equivalent Ca(3)N4 trigonal pyramids,  an edgeedge with one Sn(1)N4 tetrahedra, and edges with two equivalent Ca(2)N5 trigonal bipyramids. There are three inequivalent N sites. In the first N site, N(2) is bonded to one Ca(1), one Ca(3), two equivalent Ca(2), and one Sn(1) atom to form NCa4Sn trigonal bipyramids that share corners with five equivalent N(1)Ca5Sn octahedra, corners with two equivalent N(3)Ca3Sn2 trigonal bipyramids, corners with three equivalent N(2)Ca4Sn trigonal bipyramids, edges with two equivalent N(1)Ca5Sn octahedra, and edges with two equivalent N(3)Ca3Sn2 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 2-70°. In the second N site, N(3) is bonded to one Ca(2), two equivalent Ca(1), and two equivalent Sn(1) atoms to form distorted NCa3Sn2 trigonal bipyramids that share corners with four equivalent N(1)Ca5Sn octahedra, corners with two equivalent N(2)Ca4Sn trigonal bipyramids, edges with two equivalent N(1)Ca5Sn octahedra, edges with two equivalent N(3)Ca3Sn2 trigonal bipyramids, and edges with two equivalent N(2)Ca4Sn trigonal bipyramids. The corner-sharing octahedral tilt angles range from 12-82°. In the third N site, N(1) is bonded to one Ca(3), two equivalent Ca(1), two equivalent Ca(2), and one Sn(1) atom to form distorted NCa5Sn octahedra that share corners with four equivalent N(3)Ca3Sn2 trigonal bipyramids, corners with five equivalent N(2)Ca4Sn trigonal bipyramids,  an edgeedge with one N(1)Ca5Sn octahedra, edges with two equivalent N(3)Ca3Sn2 trigonal bipyramids, edges with two equivalent N(2)Ca4Sn trigonal bipyramids, and  a faceface with one N(1)Ca5Sn octahedra. is represented by the CIF card [CIF]
data_Ca5(SnN3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.282
_cell_length_b   6.025
_cell_length_c   13.964
_cell_angle_alpha   90.000
_cell_angle_beta   94.423
_cell_angle_gamma   118.654
_symmetry_Int_Tables_number   1
_cell_volume   462.000
_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
  Ca  Ca0  1  0.196  0.848  0.030  1.0
  Ca  Ca1  1  0.804  0.651  0.470  1.0
  Ca  Ca2  1  0.804  0.152  0.970  1.0
  Ca  Ca3  1  0.196  0.349  0.530  1.0
  Ca  Ca4  1  0.293  0.056  0.716  1.0
  Ca  Ca5  1  0.707  0.763  0.784  1.0
  Ca  Ca6  1  0.707  0.944  0.284  1.0
  Ca  Ca7  1  0.293  0.237  0.216  1.0
  Ca  Ca8  1  0.000  0.379  0.750  1.0
  Ca  Ca9  1  0.000  0.621  0.250  1.0
  Sn  Sn10  1  0.586  0.929  0.587  1.0
  Sn  Sn11  1  0.414  0.343  0.913  1.0
  Sn  Sn12  1  0.414  0.071  0.413  1.0
  Sn  Sn13  1  0.586  0.657  0.087  1.0
  N  N14  1  0.935  0.027  0.636  1.0
  N  N15  1  0.065  0.092  0.864  1.0
  N  N16  1  0.065  0.973  0.364  1.0
  N  N17  1  0.935  0.908  0.136  1.0
  N  N18  1  0.330  0.682  0.675  1.0
  N  N19  1  0.670  0.352  0.825  1.0
  N  N20  1  0.670  0.318  0.325  1.0
  N  N21  1  0.330  0.648  0.175  1.0
  N  N22  1  0.519  0.243  0.556  1.0
  N  N23  1  0.481  0.725  0.944  1.0
  N  N24  1  0.481  0.757  0.444  1.0
  N  N25  1  0.519  0.275  0.056  1.0
[/CIF]
.