The compound described by CrN2 is beta Tridymite structured and crystallizes in the orthorhombic Ama2 space group. Cr(1) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form corner-sharing CrN4 tetrahedra. There are three inequivalent N sites. In the first N site, N(1) is bonded in a linear geometry to two equivalent Cr(1) atoms. In the second N site, N(2) is bonded in a linear geometry to two equivalent Cr(1) atoms. In the third N site, N(3) is bonded in a linear geometry to two equivalent Cr(1) atoms. is represented by the CIF card [CIF]
data_CrN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.653
_cell_length_b   5.653
_cell_length_c   9.124
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.319
_symmetry_Int_Tables_number   1
_cell_volume   251.727
_cell_formula_units_Z   4
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  0.330  0.662  0.561  1.0
  Cr  Cr1  1  0.662  0.330  0.439  1.0
  Cr  Cr2  1  0.330  0.662  0.939  1.0
  Cr  Cr3  1  0.662  0.330  0.061  1.0
  N  N4  1  0.678  0.348  0.250  1.0
  N  N5  1  0.348  0.678  0.750  1.0
  N  N6  1  0.473  0.473  0.500  1.0
  N  N7  1  0.473  0.473  0.000  1.0
  N  N8  1  0.505  0.989  0.491  1.0
  N  N9  1  0.989  0.505  0.509  1.0
  N  N10  1  0.505  0.989  0.009  1.0
  N  N11  1  0.989  0.505  0.991  1.0
[/CIF]
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The compound described by CrN2 is beta Tridymite structured and crystallizes in the orthorhombic Ama2 space group. Cr(1) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form corner-sharing CrN4 tetrahedra. There are three inequivalent N sites. In the first N site, N(1) is bonded in a linear geometry to two equivalent Cr(1) atoms. In the second N site, N(2) is bonded in a linear geometry to two equivalent Cr(1) atoms. In the third N site, N(3) is bonded in a linear geometry to two equivalent Cr(1) atoms. is represented by the CIF card [CIF]
data_CrN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.653
_cell_length_b   5.653
_cell_length_c   9.124
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.319
_symmetry_Int_Tables_number   1
_cell_volume   251.727
_cell_formula_units_Z   4
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  0.330  0.662  0.561  1.0
  Cr  Cr1  1  0.662  0.330  0.439  1.0
  Cr  Cr2  1  0.330  0.662  0.939  1.0
  Cr  Cr3  1  0.662  0.330  0.061  1.0
  N  N4  1  0.678  0.348  0.250  1.0
  N  N5  1  0.348  0.678  0.750  1.0
  N  N6  1  0.473  0.473  0.500  1.0
  N  N7  1  0.473  0.473  0.000  1.0
  N  N8  1  0.505  0.989  0.491  1.0
  N  N9  1  0.989  0.505  0.509  1.0
  N  N10  1  0.505  0.989  0.009  1.0
  N  N11  1  0.989  0.505  0.991  1.0
[/CIF]
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