CrN2 crystallizes in the monoclinic Pm space group. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one N(3), one N(6), and two equivalent N(4) atoms to form corner-sharing CrN4 tetrahedra. In the second Cr site, Cr(2) is bonded to one N(3), one N(6), and two equivalent N(2) atoms to form corner-sharing CrN4 tetrahedra. In the third Cr site, Cr(3) is bonded to one N(1), one N(5), and two equivalent N(4) atoms to form corner-sharing CrN4 tetrahedra. In the fourth Cr site, Cr(4) is bonded to one N(1), one N(5), and two equivalent N(2) atoms to form corner-sharing CrN4 tetrahedra. There are six inequivalent N sites. In the first N site, N(1) is bonded in a bent 120 degrees geometry to one Cr(3) and one Cr(4) atom. In the second N site, N(2) is bonded in a bent 120 degrees geometry to one Cr(2) and one Cr(4) atom. In the third N site, N(3) is bonded in a bent 120 degrees 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(3) atom. In the fifth N site, N(5) is bonded in a bent 150 degrees geometry to one Cr(3) and one Cr(4) atom. In the sixth N site, N(6) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom.
CrN2 crystallizes in the monoclinic Pm space group. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one N(3), one N(6), and two equivalent N(4) atoms to form corner-sharing CrN4 tetrahedra. The Cr(1)-N(3) bond length is 1.69 Å. The Cr(1)-N(6) bond length is 1.80 Å. Both Cr(1)-N(4) bond lengths are 1.76 Å. In the second Cr site, Cr(2) is bonded to one N(3), one N(6), and two equivalent N(2) atoms to form corner-sharing CrN4 tetrahedra. The Cr(2)-N(3) bond length is 1.88 Å. The Cr(2)-N(6) bond length is 1.75 Å. Both Cr(2)-N(2) bond lengths are 1.72 Å. In the third Cr site, Cr(3) is bonded to one N(1), one N(5), and two equivalent N(4) atoms to form corner-sharing CrN4 tetrahedra. The Cr(3)-N(1) bond length is 1.76 Å. The Cr(3)-N(5) bond length is 1.75 Å. Both Cr(3)-N(4) bond lengths are 1.72 Å. In the fourth Cr site, Cr(4) is bonded to one N(1), one N(5), and two equivalent N(2) atoms to form corner-sharing CrN4 tetrahedra. The Cr(4)-N(1) bond length is 1.66 Å. The Cr(4)-N(5) bond length is 1.73 Å. Both Cr(4)-N(2) bond lengths are 1.78 Å. There are six inequivalent N sites. In the first N site, N(1) is bonded in a bent 120 degrees geometry to one Cr(3) and one Cr(4) atom. In the second N site, N(2) is bonded in a bent 120 degrees geometry to one Cr(2) and one Cr(4) atom. In the third N site, N(3) is bonded in a bent 120 degrees 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(3) atom. In the fifth N site, N(5) is bonded in a bent 150 degrees geometry to one Cr(3) and one Cr(4) atom. In the sixth N site, N(6) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom.