Ca3(RuN2)2 crystallizes in the orthorhombic Pnna space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 5-coordinate geometry to two equivalent N(1) and three equivalent N(2) atoms. In the second Ca site, Ca(2) is bonded in a 6-coordinate geometry to two equivalent N(2) and four equivalent N(1) atoms. There are two inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent N(2) atoms. In the second Ru site, Ru(2) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 6-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), one Ru(1), and one Ru(2) atom. In the second N site, N(2) is bonded to one Ca(2), three equivalent Ca(1), one Ru(1), and one Ru(2) atom to form a mixture of distorted corner, face, and edge-sharing NCa4Ru2 octahedra. The corner-sharing octahedral tilt angles range from 36-78°.
Ca3(RuN2)2 crystallizes in the orthorhombic Pnna space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 5-coordinate geometry to two equivalent N(1) and three equivalent N(2) atoms. There is one shorter (2.48 Å) and one longer (2.73 Å) Ca(1)-N(1) bond length. There are a spread of Ca(1)-N(2) bond distances ranging from 2.33-2.80 Å. In the second Ca site, Ca(2) is bonded in a 6-coordinate geometry to two equivalent N(2) and four equivalent N(1) atoms. Both Ca(2)-N(2) bond lengths are 2.51 Å. There are two shorter (2.50 Å) and two longer (2.72 Å) Ca(2)-N(1) bond lengths. There are two inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent N(2) atoms. Both Ru(1)-N(1) bond lengths are 1.99 Å. Both Ru(1)-N(2) bond lengths are 2.05 Å. In the second Ru site, Ru(2) is bonded in a 4-coordinate geometry to two equivalent N(1) and two equivalent N(2) atoms. Both Ru(2)-N(1) bond lengths are 1.97 Å. Both Ru(2)-N(2) bond lengths are 2.12 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 6-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), one Ru(1), and one Ru(2) atom. In the second N site, N(2) is bonded to one Ca(2), three equivalent Ca(1), one Ru(1), and one Ru(2) atom to form a mixture of distorted corner, face, and edge-sharing NCa4Ru2 octahedra. The corner-sharing octahedral tilt angles range from 36-78°.