The structure described by Pb5Sn2N6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted trigonal non-coplanar geometry to one N(1), one N(2), and one N(3) atom. In the second Pb site, Pb(2) is bonded in a distorted T-shaped geometry to one N(2) and two equivalent N(1) atoms. In the third Pb site, Pb(3) is bonded in a water-like geometry to two equivalent N(2) atoms. Sn(1) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form edge-sharing SnN4 tetrahedra. There are three inequivalent N sites. In the first N site, N(2) is bonded to one Pb(1), one Pb(2), one Pb(3), and one Sn(1) atom to form a mixture of distorted edge and corner-sharing NSnPb3 trigonal pyramids. In the second N site, N(3) is bonded in a T-shaped geometry to one Pb(1) and two equivalent Sn(1) atoms. In the third N site, N(1) is bonded to one Pb(1), two equivalent Pb(2), and one Sn(1) atom to form a mixture of distorted edge and corner-sharing NSnPb3 trigonal pyramids. is represented by the CIF file [CIF]
data_Sn2Pb5N6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.390
_cell_length_b   7.196
_cell_length_c   14.526
_cell_angle_alpha   90.000
_cell_angle_beta   96.674
_cell_angle_gamma   124.270
_symmetry_Int_Tables_number   1
_cell_volume   546.521
_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
  Sn  Sn0  1  0.521  0.893  0.586  1.0
  Sn  Sn1  1  0.479  0.372  0.914  1.0
  Sn  Sn2  1  0.479  0.107  0.414  1.0
  Sn  Sn3  1  0.521  0.628  0.086  1.0
  Pb  Pb4  1  0.154  0.787  0.961  1.0
  Pb  Pb5  1  0.846  0.633  0.539  1.0
  Pb  Pb6  1  0.846  0.213  0.039  1.0
  Pb  Pb7  1  0.154  0.367  0.461  1.0
  Pb  Pb8  1  0.241  0.114  0.686  1.0
  Pb  Pb9  1  0.759  0.874  0.814  1.0
  Pb  Pb10  1  0.759  0.886  0.314  1.0
  Pb  Pb11  1  0.241  0.126  0.186  1.0
  Pb  Pb12  1  0.000  0.474  0.750  1.0
  Pb  Pb13  1  0.000  0.526  0.250  1.0
  N  N14  1  0.780  0.834  0.650  1.0
  N  N15  1  0.220  0.054  0.850  1.0
  N  N16  1  0.220  0.166  0.350  1.0
  N  N17  1  0.780  0.946  0.150  1.0
  N  N18  1  0.203  0.774  0.657  1.0
  N  N19  1  0.797  0.572  0.843  1.0
  N  N20  1  0.797  0.226  0.343  1.0
  N  N21  1  0.203  0.428  0.157  1.0
  N  N22  1  0.630  0.225  0.557  1.0
  N  N23  1  0.370  0.596  0.943  1.0
  N  N24  1  0.370  0.775  0.443  1.0
  N  N25  1  0.630  0.404  0.057  1.0
[/CIF]
.
The structure described by Pb5Sn2N6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted trigonal non-coplanar geometry to one N(1), one N(2), and one N(3) atom. In the second Pb site, Pb(2) is bonded in a distorted T-shaped geometry to one N(2) and two equivalent N(1) atoms. In the third Pb site, Pb(3) is bonded in a water-like geometry to two equivalent N(2) atoms. Sn(1) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form edge-sharing SnN4 tetrahedra. There are three inequivalent N sites. In the first N site, N(2) is bonded to one Pb(1), one Pb(2), one Pb(3), and one Sn(1) atom to form a mixture of distorted edge and corner-sharing NSnPb3 trigonal pyramids. In the second N site, N(3) is bonded in a T-shaped geometry to one Pb(1) and two equivalent Sn(1) atoms. In the third N site, N(1) is bonded to one Pb(1), two equivalent Pb(2), and one Sn(1) atom to form a mixture of distorted edge and corner-sharing NSnPb3 trigonal pyramids. is represented by the CIF file [CIF]
data_Sn2Pb5N6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.390
_cell_length_b   7.196
_cell_length_c   14.526
_cell_angle_alpha   90.000
_cell_angle_beta   96.674
_cell_angle_gamma   124.270
_symmetry_Int_Tables_number   1
_cell_volume   546.521
_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
  Sn  Sn0  1  0.521  0.893  0.586  1.0
  Sn  Sn1  1  0.479  0.372  0.914  1.0
  Sn  Sn2  1  0.479  0.107  0.414  1.0
  Sn  Sn3  1  0.521  0.628  0.086  1.0
  Pb  Pb4  1  0.154  0.787  0.961  1.0
  Pb  Pb5  1  0.846  0.633  0.539  1.0
  Pb  Pb6  1  0.846  0.213  0.039  1.0
  Pb  Pb7  1  0.154  0.367  0.461  1.0
  Pb  Pb8  1  0.241  0.114  0.686  1.0
  Pb  Pb9  1  0.759  0.874  0.814  1.0
  Pb  Pb10  1  0.759  0.886  0.314  1.0
  Pb  Pb11  1  0.241  0.126  0.186  1.0
  Pb  Pb12  1  0.000  0.474  0.750  1.0
  Pb  Pb13  1  0.000  0.526  0.250  1.0
  N  N14  1  0.780  0.834  0.650  1.0
  N  N15  1  0.220  0.054  0.850  1.0
  N  N16  1  0.220  0.166  0.350  1.0
  N  N17  1  0.780  0.946  0.150  1.0
  N  N18  1  0.203  0.774  0.657  1.0
  N  N19  1  0.797  0.572  0.843  1.0
  N  N20  1  0.797  0.226  0.343  1.0
  N  N21  1  0.203  0.428  0.157  1.0
  N  N22  1  0.630  0.225  0.557  1.0
  N  N23  1  0.370  0.596  0.943  1.0
  N  N24  1  0.370  0.775  0.443  1.0
  N  N25  1  0.630  0.404  0.057  1.0
[/CIF]
.