The structure described by Ce2CrN3 crystallizes in the orthorhombic Immm space group. Ce(1) is bonded to two equivalent N(2) and five equivalent N(1) atoms to form a mixture of distorted corner, edge, and face-sharing CeN7 pentagonal bipyramids. Cr(1) is bonded in a square co-planar geometry to two equivalent N(1) and two equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(2) is bonded to four equivalent Ce(1) and two equivalent Cr(1) atoms to form NCe4Cr2 octahedra that share corners with two equivalent N(2)Ce4Cr2 octahedra, corners with twelve equivalent N(1)Ce5Cr octahedra, edges with two equivalent N(2)Ce4Cr2 octahedra, and faces with four equivalent N(1)Ce5Cr octahedra. The corner-sharing octahedral tilt angles range from 0-58°. In the second N site, N(1) is bonded to five equivalent Ce(1) and one Cr(1) atom to form NCe5Cr octahedra that share corners with five equivalent N(1)Ce5Cr octahedra, corners with six equivalent N(2)Ce4Cr2 octahedra, edges with eight equivalent N(1)Ce5Cr octahedra, and faces with two equivalent N(2)Ce4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 0-58°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ce2CrN3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.462
_cell_length_b   3.815
_cell_length_c   6.758
_cell_angle_alpha   106.392
_cell_angle_beta   104.840
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   82.516
_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
  Ce  Ce0  1  0.646  0.646  0.292  1.0
  Ce  Ce1  1  0.354  0.354  0.708  1.0
  Cr  Cr2  1  0.000  0.000  0.000  1.0
  N  N3  1  0.835  0.835  0.669  1.0
  N  N4  1  0.165  0.165  0.331  1.0
  N  N5  1  0.000  0.500  0.000  1.0
[/CIF]
.
The structure described by Ce2CrN3 crystallizes in the orthorhombic Immm space group. Ce(1) is bonded to two equivalent N(2) and five equivalent N(1) atoms to form a mixture of distorted corner, edge, and face-sharing CeN7 pentagonal bipyramids. Cr(1) is bonded in a square co-planar geometry to two equivalent N(1) and two equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(2) is bonded to four equivalent Ce(1) and two equivalent Cr(1) atoms to form NCe4Cr2 octahedra that share corners with two equivalent N(2)Ce4Cr2 octahedra, corners with twelve equivalent N(1)Ce5Cr octahedra, edges with two equivalent N(2)Ce4Cr2 octahedra, and faces with four equivalent N(1)Ce5Cr octahedra. The corner-sharing octahedral tilt angles range from 0-58°. In the second N site, N(1) is bonded to five equivalent Ce(1) and one Cr(1) atom to form NCe5Cr octahedra that share corners with five equivalent N(1)Ce5Cr octahedra, corners with six equivalent N(2)Ce4Cr2 octahedra, edges with eight equivalent N(1)Ce5Cr octahedra, and faces with two equivalent N(2)Ce4Cr2 octahedra. The corner-sharing octahedral tilt angles range from 0-58°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ce2CrN3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.462
_cell_length_b   3.815
_cell_length_c   6.758
_cell_angle_alpha   106.392
_cell_angle_beta   104.840
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   82.516
_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
  Ce  Ce0  1  0.646  0.646  0.292  1.0
  Ce  Ce1  1  0.354  0.354  0.708  1.0
  Cr  Cr2  1  0.000  0.000  0.000  1.0
  N  N3  1  0.835  0.835  0.669  1.0
  N  N4  1  0.165  0.165  0.331  1.0
  N  N5  1  0.000  0.500  0.000  1.0
[/CIF]
.