Ba3(GaN2)2 crystallizes in the orthorhombic Pnna space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 6-coordinate geometry to two equivalent N(1) and four equivalent N(2) atoms. In the second Ba site, Ba(2) is bonded in a 4-coordinate geometry to one N(2) and three equivalent N(1) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form distorted edge-sharing GaN4 tetrahedra. In the second Ga site, Ga(2) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form distorted edge-sharing GaN4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 6-coordinate geometry to one Ba(1), three equivalent Ba(2), one Ga(1), and one Ga(2) atom. In the second N site, N(2) is bonded in a 5-coordinate geometry to one Ba(2), two equivalent Ba(1), one Ga(1), and one Ga(2) atom.
Ba3(GaN2)2 crystallizes in the orthorhombic Pnna space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 6-coordinate geometry to two equivalent N(1) and four equivalent N(2) atoms. Both Ba(1)-N(1) bond lengths are 3.12 Å. There are two shorter (2.84 Å) and two longer (2.92 Å) Ba(1)-N(2) bond lengths. In the second Ba site, Ba(2) is bonded in a 4-coordinate geometry to one N(2) and three equivalent N(1) atoms. The Ba(2)-N(2) bond length is 2.66 Å. There are a spread of Ba(2)-N(1) bond distances ranging from 2.77-2.92 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form distorted edge-sharing GaN4 tetrahedra. Both Ga(1)-N(1) bond lengths are 2.03 Å. Both Ga(1)-N(2) bond lengths are 2.07 Å. In the second Ga site, Ga(2) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form distorted edge-sharing GaN4 tetrahedra. Both Ga(2)-N(1) bond lengths are 2.03 Å. Both Ga(2)-N(2) bond lengths are 1.99 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 6-coordinate geometry to one Ba(1), three equivalent Ba(2), one Ga(1), and one Ga(2) atom. In the second N site, N(2) is bonded in a 5-coordinate geometry to one Ba(2), two equivalent Ba(1), one Ga(1), and one Ga(2) atom.