The structure described by USmN2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. U(1) is bonded to two equivalent N(2) and four equivalent N(1) atoms to form UN6 octahedra that share corners with six equivalent U(1)N6 octahedra, edges with four equivalent U(1)N6 octahedra, and edges with eight equivalent Sm(1)N6 octahedra. The corner-sharing octahedra are not tilted. Sm(1) is bonded to two equivalent N(1) and four equivalent N(2) atoms to form SmN6 octahedra that share corners with six equivalent Sm(1)N6 octahedra, edges with four equivalent Sm(1)N6 octahedra, and edges with eight equivalent U(1)N6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent N sites. In the first N site, N(1) is bonded to four equivalent U(1) and two equivalent Sm(1) atoms to form NSm2U4 octahedra that share corners with six equivalent N(1)Sm2U4 octahedra, edges with four equivalent N(1)Sm2U4 octahedra, and edges with eight equivalent N(2)Sm4U2 octahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to two equivalent U(1) and four equivalent Sm(1) atoms to form NSm4U2 octahedra that share corners with six equivalent N(2)Sm4U2 octahedra, edges with four equivalent N(2)Sm4U2 octahedra, and edges with eight equivalent N(1)Sm2U4 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_SmUN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.512
_cell_length_b   3.512
_cell_length_c   4.929
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   60.789
_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
  Sm  Sm0  1  0.000  0.000  0.500  1.0
  U  U1  1  0.500  0.500  0.000  1.0
  N  N2  1  0.000  0.000  0.000  1.0
  N  N3  1  0.500  0.500  0.500  1.0
[/CIF]
.
The structure described by USmN2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. U(1) is bonded to two equivalent N(2) and four equivalent N(1) atoms to form UN6 octahedra that share corners with six equivalent U(1)N6 octahedra, edges with four equivalent U(1)N6 octahedra, and edges with eight equivalent Sm(1)N6 octahedra. The corner-sharing octahedra are not tilted. Sm(1) is bonded to two equivalent N(1) and four equivalent N(2) atoms to form SmN6 octahedra that share corners with six equivalent Sm(1)N6 octahedra, edges with four equivalent Sm(1)N6 octahedra, and edges with eight equivalent U(1)N6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent N sites. In the first N site, N(1) is bonded to four equivalent U(1) and two equivalent Sm(1) atoms to form NSm2U4 octahedra that share corners with six equivalent N(1)Sm2U4 octahedra, edges with four equivalent N(1)Sm2U4 octahedra, and edges with eight equivalent N(2)Sm4U2 octahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to two equivalent U(1) and four equivalent Sm(1) atoms to form NSm4U2 octahedra that share corners with six equivalent N(2)Sm4U2 octahedra, edges with four equivalent N(2)Sm4U2 octahedra, and edges with eight equivalent N(1)Sm2U4 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF file [CIF]
data_SmUN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.512
_cell_length_b   3.512
_cell_length_c   4.929
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   60.789
_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
  Sm  Sm0  1  0.000  0.000  0.500  1.0
  U  U1  1  0.500  0.500  0.000  1.0
  N  N2  1  0.000  0.000  0.000  1.0
  N  N3  1  0.500  0.500  0.500  1.0
[/CIF]
.