Ba3(CrN2)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 7-coordinate geometry to three equivalent N(2) and four equivalent N(1) atoms. In the second Ba site, Ba(2) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent N(2) atoms. Cr(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form a mixture of corner and edge-sharing CrN4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 2-coordinate geometry to one Ba(2), four equivalent Ba(1), and two equivalent Cr(1) atoms. In the second N site, N(2) is bonded in a distorted bent 150 degrees geometry to one Ba(2), three equivalent Ba(1), and two equivalent Cr(1) atoms.
Ba3(CrN2)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 7-coordinate geometry to three equivalent N(2) and four equivalent N(1) atoms. There are a spread of Ba(1)-N(2) bond distances ranging from 2.73-3.18 Å. There are a spread of Ba(1)-N(1) bond distances ranging from 2.81-3.52 Å. In the second Ba site, Ba(2) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent N(2) atoms. Both Ba(2)-N(1) bond lengths are 2.91 Å. Both Ba(2)-N(2) bond lengths are 2.77 Å. Cr(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form a mixture of corner and edge-sharing CrN4 tetrahedra. There is one shorter (1.88 Å) and one longer (1.92 Å) Cr(1)-N(1) bond length. There is one shorter (1.86 Å) and one longer (1.88 Å) Cr(1)-N(2) bond length. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 2-coordinate geometry to one Ba(2), four equivalent Ba(1), and two equivalent Cr(1) atoms. In the second N site, N(2) is bonded in a distorted bent 150 degrees geometry to one Ba(2), three equivalent Ba(1), and two equivalent Cr(1) atoms.