CrN2 crystallizes in the triclinic P1 space group. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one N(1), one N(3), one N(5), and one N(8) atom to form corner-sharing CrN4 tetrahedra. In the second Cr site, Cr(2) is bonded to one N(2), one N(4), 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(1), one N(2), one N(3), and one N(7) atom to form distorted corner-sharing CrN4 tetrahedra. In the fourth Cr site, Cr(4) is bonded to one N(4), one N(6), one N(7), and one N(8) atom to form corner-sharing CrN4 tetrahedra. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(3), and one N(6) atom. In the second N site, N(2) is bonded in an L-shaped geometry to one Cr(2) and one Cr(3) atom. In the third N site, N(3) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(3) atom. In the fourth N site, N(4) is bonded in a bent 120 degrees geometry to one Cr(2) and one Cr(4) atom. In the fifth N site, N(5) is bonded in a bent 120 degrees geometry to one Cr(1) and one Cr(2) atom. In the sixth N site, N(6) is bonded in a 3-coordinate geometry to one Cr(2), one Cr(4), and one N(1) atom. In the seventh N site, N(7) is bonded in a bent 120 degrees geometry to one Cr(3) and one Cr(4) atom. In the eighth N site, N(8) is bonded in a bent 120 degrees geometry to one Cr(1) and one Cr(4) atom.
CrN2 crystallizes in the triclinic P1 space group. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one N(1), one N(3), one N(5), and one N(8) atom to form corner-sharing CrN4 tetrahedra. The Cr(1)-N(1) bond length is 1.91 Å. The Cr(1)-N(3) bond length is 1.72 Å. The Cr(1)-N(5) bond length is 1.73 Å. The Cr(1)-N(8) bond length is 1.72 Å. In the second Cr site, Cr(2) is bonded to one N(2), one N(4), one N(5), and one N(6) atom to form corner-sharing CrN4 tetrahedra. The Cr(2)-N(2) bond length is 1.72 Å. The Cr(2)-N(4) bond length is 1.78 Å. The Cr(2)-N(5) bond length is 1.72 Å. The Cr(2)-N(6) bond length is 1.90 Å. In the third Cr site, Cr(3) is bonded to one N(1), one N(2), one N(3), and one N(7) atom to form distorted corner-sharing CrN4 tetrahedra. The Cr(3)-N(1) bond length is 1.90 Å. The Cr(3)-N(2) bond length is 1.79 Å. The Cr(3)-N(3) bond length is 1.72 Å. The Cr(3)-N(7) bond length is 1.72 Å. In the fourth Cr site, Cr(4) is bonded to one N(4), one N(6), one N(7), and one N(8) atom to form corner-sharing CrN4 tetrahedra. The Cr(4)-N(4) bond length is 1.69 Å. The Cr(4)-N(6) bond length is 1.92 Å. The Cr(4)-N(7) bond length is 1.74 Å. The Cr(4)-N(8) bond length is 1.74 Å. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(3), and one N(6) atom. The N(1)-N(6) bond length is 1.34 Å. In the second N site, N(2) is bonded in an L-shaped geometry to one Cr(2) and one Cr(3) atom. In the third N site, N(3) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(3) atom. In the fourth N site, N(4) is bonded in a bent 120 degrees geometry to one Cr(2) and one Cr(4) atom. In the fifth N site, N(5) is bonded in a bent 120 degrees geometry to one Cr(1) and one Cr(2) atom. In the sixth N site, N(6) is bonded in a 3-coordinate geometry to one Cr(2), one Cr(4), and one N(1) atom. In the seventh N site, N(7) is bonded in a bent 120 degrees geometry to one Cr(3) and one Cr(4) atom. In the eighth N site, N(8) is bonded in a bent 120 degrees geometry to one Cr(1) and one Cr(4) atom.