The structure described by CrN2 is Marcasite structured and crystallizes in the orthorhombic Pnnm space group. Cr(1) is bonded to six equivalent N(1) atoms to form CrN6 octahedra that share corners with eight equivalent Cr(1)N6 octahedra, corners with six equivalent N(1)Cr3N tetrahedra, and edges with two equivalent Cr(1)N6 octahedra. The corner-sharing octahedral tilt angles are 68°. N(1) is bonded to three equivalent Cr(1) and one N(1) atom to form NCr3N tetrahedra that share corners with three equivalent Cr(1)N6 octahedra, corners with thirteen equivalent N(1)Cr3N tetrahedra, and  an edgeedge with one N(1)Cr3N tetrahedra. The corner-sharing octahedral tilt angles are 66°. is represented by the CIF card [CIF]
data_CrN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.784
_cell_length_b   3.902
_cell_length_c   4.810
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   52.247
_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
  Cr  Cr0  1  0.500  0.500  0.500  1.0
  Cr  Cr1  1  0.000  0.000  0.000  1.0
  N  N2  1  0.500  0.634  0.089  1.0
  N  N3  1  0.500  0.366  0.911  1.0
  N  N4  1  0.000  0.134  0.411  1.0
  N  N5  1  0.000  0.866  0.589  1.0
[/CIF]
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The structure described by CrN2 is Marcasite structured and crystallizes in the orthorhombic Pnnm space group. Cr(1) is bonded to six equivalent N(1) atoms to form CrN6 octahedra that share corners with eight equivalent Cr(1)N6 octahedra, corners with six equivalent N(1)Cr3N tetrahedra, and edges with two equivalent Cr(1)N6 octahedra. The corner-sharing octahedral tilt angles are 68°. N(1) is bonded to three equivalent Cr(1) and one N(1) atom to form NCr3N tetrahedra that share corners with three equivalent Cr(1)N6 octahedra, corners with thirteen equivalent N(1)Cr3N tetrahedra, and  an edgeedge with one N(1)Cr3N tetrahedra. The corner-sharing octahedral tilt angles are 66°. is represented by the CIF card [CIF]
data_CrN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.784
_cell_length_b   3.902
_cell_length_c   4.810
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   52.247
_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
  Cr  Cr0  1  0.500  0.500  0.500  1.0
  Cr  Cr1  1  0.000  0.000  0.000  1.0
  N  N2  1  0.500  0.634  0.089  1.0
  N  N3  1  0.500  0.366  0.911  1.0
  N  N4  1  0.000  0.134  0.411  1.0
  N  N5  1  0.000  0.866  0.589  1.0
[/CIF]
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