The structure described by CrN2 is Low Tridymite-like structured and crystallizes in the triclinic P-1 space group. There are eight inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form corner-sharing CrN4 tetrahedra. In the second Cr site, Cr(2) is bonded to one N(1), one N(3), one N(5), and one N(6) atom to form corner-sharing CrN4 tetrahedra. In the third Cr site, Cr(3) is bonded to one N(10), one N(7), one N(8), and one N(9) atom to form corner-sharing CrN4 tetrahedra. In the fourth Cr site, Cr(4) is bonded to one N(11), one N(12), one N(13), and one N(7) atom to form corner-sharing CrN4 tetrahedra. In the fifth Cr site, Cr(5) is bonded to one N(10), one N(14), one N(2), and one N(8) atom to form corner-sharing CrN4 tetrahedra. In the sixth Cr site, Cr(6) is bonded to one N(14), one N(15), one N(5), and one N(9) atom to form corner-sharing CrN4 tetrahedra. In the seventh Cr site, Cr(7) is bonded to one N(13), one N(15), one N(16), and one N(6) atom to form corner-sharing CrN4 tetrahedra. In the eighth Cr site, Cr(8) is bonded to one N(11), one N(12), one N(16), and one N(4) atom to form corner-sharing CrN4 tetrahedra. There are sixteen inequivalent N sites. In the first N site, N(1) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom. In the second N site, N(2) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(5) atom. In the third N site, N(3) is bonded in a linear geometry to one Cr(1) and one Cr(2) atom. In the fourth N site, N(4) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(8) atom. In the fifth N site, N(5) is bonded in a bent 150 degrees geometry to one Cr(2) and one Cr(6) atom. In the sixth N site, N(6) is bonded in a bent 150 degrees geometry to one Cr(2) and one Cr(7) atom. In the seventh N site, N(7) is bonded in a bent 150 degrees geometry to one Cr(3) and one Cr(4) atom. In the eighth N site, N(8) is bonded in a bent 150 degrees geometry to one Cr(3) and one Cr(5) atom. In the ninth N site, N(9) is bonded in a linear geometry to one Cr(3) and one Cr(6) atom. In the tenth N site, N(10) is bonded in a bent 150 degrees geometry to one Cr(3) and one Cr(5) atom. In the eleventh N site, N(11) is bonded in a bent 150 degrees geometry to one Cr(4) and one Cr(8) atom. In the twelfth N site, N(12) is bonded in a bent 150 degrees geometry to one Cr(4) and one Cr(8) atom. In the thirteenth N site, N(13) is bonded in a linear geometry to one Cr(4) and one Cr(7) atom. In the fourteenth N site, N(14) is bonded in a bent 150 degrees geometry to one Cr(5) and one Cr(6) atom. In the fifteenth N site, N(15) is bonded in a bent 150 degrees geometry to one Cr(6) and one Cr(7) atom. In the sixteenth N site, N(16) is bonded in a bent 150 degrees geometry to one Cr(7) and one Cr(8) atom. is represented by the CIF file [CIF]
data_CrN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.992
_cell_length_b   12.432
_cell_length_c   12.581
_cell_angle_alpha   105.043
_cell_angle_beta   94.221
_cell_angle_gamma   95.796
_symmetry_Int_Tables_number   1
_cell_volume   1194.442
_cell_formula_units_Z   16
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  0.388  0.639  0.644  1.0
  Cr  Cr1  1  0.612  0.361  0.356  1.0
  Cr  Cr2  1  0.779  0.586  0.570  1.0
  Cr  Cr3  1  0.221  0.414  0.430  1.0
  Cr  Cr4  1  0.591  0.857  0.357  1.0
  Cr  Cr5  1  0.409  0.143  0.643  1.0
  Cr  Cr6  1  0.430  0.638  0.141  1.0
  Cr  Cr7  1  0.570  0.362  0.859  1.0
  Cr  Cr8  1  0.331  0.867  0.559  1.0
  Cr  Cr9  1  0.669  0.133  0.441  1.0
  Cr  Cr10  1  0.957  0.761  0.433  1.0
  Cr  Cr11  1  0.043  0.239  0.567  1.0
  Cr  Cr12  1  0.075  0.540  0.242  1.0
  Cr  Cr13  1  0.925  0.460  0.758  1.0
  Cr  Cr14  1  0.696  0.441  0.125  1.0
  Cr  Cr15  1  0.304  0.559  0.875  1.0
  N  N16  1  0.598  0.632  0.622  1.0
  N  N17  1  0.402  0.368  0.378  1.0
  N  N18  1  0.335  0.766  0.632  1.0
  N  N19  1  0.665  0.234  0.368  1.0
  N  N20  1  0.273  0.529  0.540  1.0
  N  N21  1  0.727  0.471  0.460  1.0
  N  N22  1  0.358  0.623  0.773  1.0
  N  N23  1  0.642  0.377  0.227  1.0
  N  N24  1  0.891  0.692  0.526  1.0
  N  N25  1  0.109  0.308  0.474  1.0
  N  N26  1  0.894  0.547  0.675  1.0
  N  N27  1  0.106  0.453  0.325  1.0
  N  N28  1  0.495  0.768  0.234  1.0
  N  N29  1  0.505  0.232  0.766  1.0
  N  N30  1  0.466  0.837  0.458  1.0
  N  N31  1  0.534  0.163  0.542  1.0
  N  N32  1  0.785  0.820  0.385  1.0
  N  N33  1  0.215  0.180  0.615  1.0
  N  N34  1  0.608  1.000  0.360  1.0
  N  N35  1  0.392  0.000  0.640  1.0
  N  N36  1  0.597  0.560  0.143  1.0
  N  N37  1  0.403  0.440  0.857  1.0
  N  N38  1  0.375  0.643  0.008  1.0
  N  N39  1  0.625  0.357  0.992  1.0
  N  N40  1  0.264  0.574  0.192  1.0
  N  N41  1  0.736  0.426  0.808  1.0
  N  N42  1  0.128  0.859  0.494  1.0
  N  N43  1  0.872  0.141  0.506  1.0
  N  N44  1  0.018  0.664  0.322  1.0
  N  N45  1  0.982  0.336  0.678  1.0
  N  N46  1  0.911  0.480  0.138  1.0
  N  N47  1  0.089  0.520  0.862  1.0
[/CIF]
.
The structure described by CrN2 is Low Tridymite-like structured and crystallizes in the triclinic P-1 space group. There are eight inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form corner-sharing CrN4 tetrahedra. In the second Cr site, Cr(2) is bonded to one N(1), one N(3), one N(5), and one N(6) atom to form corner-sharing CrN4 tetrahedra. In the third Cr site, Cr(3) is bonded to one N(10), one N(7), one N(8), and one N(9) atom to form corner-sharing CrN4 tetrahedra. In the fourth Cr site, Cr(4) is bonded to one N(11), one N(12), one N(13), and one N(7) atom to form corner-sharing CrN4 tetrahedra. In the fifth Cr site, Cr(5) is bonded to one N(10), one N(14), one N(2), and one N(8) atom to form corner-sharing CrN4 tetrahedra. In the sixth Cr site, Cr(6) is bonded to one N(14), one N(15), one N(5), and one N(9) atom to form corner-sharing CrN4 tetrahedra. In the seventh Cr site, Cr(7) is bonded to one N(13), one N(15), one N(16), and one N(6) atom to form corner-sharing CrN4 tetrahedra. In the eighth Cr site, Cr(8) is bonded to one N(11), one N(12), one N(16), and one N(4) atom to form corner-sharing CrN4 tetrahedra. There are sixteen inequivalent N sites. In the first N site, N(1) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom. In the second N site, N(2) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(5) atom. In the third N site, N(3) is bonded in a linear geometry to one Cr(1) and one Cr(2) atom. In the fourth N site, N(4) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(8) atom. In the fifth N site, N(5) is bonded in a bent 150 degrees geometry to one Cr(2) and one Cr(6) atom. In the sixth N site, N(6) is bonded in a bent 150 degrees geometry to one Cr(2) and one Cr(7) atom. In the seventh N site, N(7) is bonded in a bent 150 degrees geometry to one Cr(3) and one Cr(4) atom. In the eighth N site, N(8) is bonded in a bent 150 degrees geometry to one Cr(3) and one Cr(5) atom. In the ninth N site, N(9) is bonded in a linear geometry to one Cr(3) and one Cr(6) atom. In the tenth N site, N(10) is bonded in a bent 150 degrees geometry to one Cr(3) and one Cr(5) atom. In the eleventh N site, N(11) is bonded in a bent 150 degrees geometry to one Cr(4) and one Cr(8) atom. In the twelfth N site, N(12) is bonded in a bent 150 degrees geometry to one Cr(4) and one Cr(8) atom. In the thirteenth N site, N(13) is bonded in a linear geometry to one Cr(4) and one Cr(7) atom. In the fourteenth N site, N(14) is bonded in a bent 150 degrees geometry to one Cr(5) and one Cr(6) atom. In the fifteenth N site, N(15) is bonded in a bent 150 degrees geometry to one Cr(6) and one Cr(7) atom. In the sixteenth N site, N(16) is bonded in a bent 150 degrees geometry to one Cr(7) and one Cr(8) atom. is represented by the CIF file [CIF]
data_CrN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.992
_cell_length_b   12.432
_cell_length_c   12.581
_cell_angle_alpha   105.043
_cell_angle_beta   94.221
_cell_angle_gamma   95.796
_symmetry_Int_Tables_number   1
_cell_volume   1194.442
_cell_formula_units_Z   16
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  0.388  0.639  0.644  1.0
  Cr  Cr1  1  0.612  0.361  0.356  1.0
  Cr  Cr2  1  0.779  0.586  0.570  1.0
  Cr  Cr3  1  0.221  0.414  0.430  1.0
  Cr  Cr4  1  0.591  0.857  0.357  1.0
  Cr  Cr5  1  0.409  0.143  0.643  1.0
  Cr  Cr6  1  0.430  0.638  0.141  1.0
  Cr  Cr7  1  0.570  0.362  0.859  1.0
  Cr  Cr8  1  0.331  0.867  0.559  1.0
  Cr  Cr9  1  0.669  0.133  0.441  1.0
  Cr  Cr10  1  0.957  0.761  0.433  1.0
  Cr  Cr11  1  0.043  0.239  0.567  1.0
  Cr  Cr12  1  0.075  0.540  0.242  1.0
  Cr  Cr13  1  0.925  0.460  0.758  1.0
  Cr  Cr14  1  0.696  0.441  0.125  1.0
  Cr  Cr15  1  0.304  0.559  0.875  1.0
  N  N16  1  0.598  0.632  0.622  1.0
  N  N17  1  0.402  0.368  0.378  1.0
  N  N18  1  0.335  0.766  0.632  1.0
  N  N19  1  0.665  0.234  0.368  1.0
  N  N20  1  0.273  0.529  0.540  1.0
  N  N21  1  0.727  0.471  0.460  1.0
  N  N22  1  0.358  0.623  0.773  1.0
  N  N23  1  0.642  0.377  0.227  1.0
  N  N24  1  0.891  0.692  0.526  1.0
  N  N25  1  0.109  0.308  0.474  1.0
  N  N26  1  0.894  0.547  0.675  1.0
  N  N27  1  0.106  0.453  0.325  1.0
  N  N28  1  0.495  0.768  0.234  1.0
  N  N29  1  0.505  0.232  0.766  1.0
  N  N30  1  0.466  0.837  0.458  1.0
  N  N31  1  0.534  0.163  0.542  1.0
  N  N32  1  0.785  0.820  0.385  1.0
  N  N33  1  0.215  0.180  0.615  1.0
  N  N34  1  0.608  1.000  0.360  1.0
  N  N35  1  0.392  0.000  0.640  1.0
  N  N36  1  0.597  0.560  0.143  1.0
  N  N37  1  0.403  0.440  0.857  1.0
  N  N38  1  0.375  0.643  0.008  1.0
  N  N39  1  0.625  0.357  0.992  1.0
  N  N40  1  0.264  0.574  0.192  1.0
  N  N41  1  0.736  0.426  0.808  1.0
  N  N42  1  0.128  0.859  0.494  1.0
  N  N43  1  0.872  0.141  0.506  1.0
  N  N44  1  0.018  0.664  0.322  1.0
  N  N45  1  0.982  0.336  0.678  1.0
  N  N46  1  0.911  0.480  0.138  1.0
  N  N47  1  0.089  0.520  0.862  1.0
[/CIF]
.