The crystal structure described by U2N3 crystallizes in the trigonal P-3m1 space group. U(1) is bonded in a 7-coordinate geometry to three equivalent N(1) and four equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to six equivalent U(1) atoms to form NU6 octahedra that share corners with twelve equivalent N(2)U4 tetrahedra, edges with six equivalent N(1)U6 octahedra, and edges with six equivalent N(2)U4 tetrahedra. In the second N site, N(2) is bonded to four equivalent U(1) atoms to form NU4 tetrahedra that share corners with six equivalent N(1)U6 octahedra, corners with six equivalent N(2)U4 tetrahedra, edges with three equivalent N(1)U6 octahedra, and edges with three equivalent N(2)U4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-57°. is represented by the CIF card [CIF]
data_U2N3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.710
_cell_length_b   3.710
_cell_length_c   5.741
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   68.433
_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
  U  U0  1  0.333  0.667  0.241  1.0
  U  U1  1  0.667  0.333  0.759  1.0
  N  N2  1  0.000  0.000  0.000  1.0
  N  N3  1  0.333  0.667  0.648  1.0
  N  N4  1  0.667  0.333  0.352  1.0
[/CIF]
.
The crystal structure described by U2N3 crystallizes in the trigonal P-3m1 space group. U(1) is bonded in a 7-coordinate geometry to three equivalent N(1) and four equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to six equivalent U(1) atoms to form NU6 octahedra that share corners with twelve equivalent N(2)U4 tetrahedra, edges with six equivalent N(1)U6 octahedra, and edges with six equivalent N(2)U4 tetrahedra. In the second N site, N(2) is bonded to four equivalent U(1) atoms to form NU4 tetrahedra that share corners with six equivalent N(1)U6 octahedra, corners with six equivalent N(2)U4 tetrahedra, edges with three equivalent N(1)U6 octahedra, and edges with three equivalent N(2)U4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-57°. is represented by the CIF card [CIF]
data_U2N3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.710
_cell_length_b   3.710
_cell_length_c   5.741
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   68.433
_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
  U  U0  1  0.333  0.667  0.241  1.0
  U  U1  1  0.667  0.333  0.759  1.0
  N  N2  1  0.000  0.000  0.000  1.0
  N  N3  1  0.333  0.667  0.648  1.0
  N  N4  1  0.667  0.333  0.352  1.0
[/CIF]
.