Rb3NdN6 crystallizes in the trigonal R32 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent N(1) and four equivalent N(2) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to four equivalent N(1) and four equivalent N(2) atoms. Nd(1) is bonded in an octahedral geometry to three equivalent N(1) and three equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted rectangular see-saw-like geometry to one Rb(1), two equivalent Rb(2), and one Nd(1) atom. In the second N site, N(2) is bonded in a 4-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), and one Nd(1) atom.
Rb3NdN6 crystallizes in the trigonal R32 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent N(1) and four equivalent N(2) atoms. Both Rb(1)-N(1) bond lengths are 3.17 Å. There are two shorter (3.03 Å) and two longer (3.17 Å) Rb(1)-N(2) bond lengths. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to four equivalent N(1) and four equivalent N(2) atoms. There are two shorter (3.06 Å) and two longer (3.10 Å) Rb(2)-N(1) bond lengths. There are two shorter (3.18 Å) and two longer (3.57 Å) Rb(2)-N(2) bond lengths. Nd(1) is bonded in an octahedral geometry to three equivalent N(1) and three equivalent N(2) atoms. All Nd(1)-N(1) bond lengths are 2.38 Å. All Nd(1)-N(2) bond lengths are 2.39 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted rectangular see-saw-like geometry to one Rb(1), two equivalent Rb(2), and one Nd(1) atom. In the second N site, N(2) is bonded in a 4-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), and one Nd(1) atom.