Nd2RuFeSi2 crystallizes in the tetragonal P-4m2 space group. Nd(1) is bonded in a 9-coordinate geometry to two equivalent Ru(1), two equivalent Fe(1), and five equivalent Si(1) atoms. Ru(1) is bonded in a 12-coordinate geometry to four equivalent Nd(1), four equivalent Fe(1), and four equivalent Si(1) atoms. Fe(1) is bonded to four equivalent Nd(1), four equivalent Ru(1), and four equivalent Si(1) atoms to form a mixture of distorted corner and face-sharing FeNd4Si4Ru4 cuboctahedra. Si(1) is bonded in a 9-coordinate geometry to five equivalent Nd(1), two equivalent Ru(1), and two equivalent Fe(1) atoms.
Nd2RuFeSi2 crystallizes in the tetragonal P-4m2 space group. Nd(1) is bonded in a 9-coordinate geometry to two equivalent Ru(1), two equivalent Fe(1), and five equivalent Si(1) atoms. Both Nd(1)-Ru(1) bond lengths are 3.04 Å. Both Nd(1)-Fe(1) bond lengths are 3.04 Å. There are four shorter (3.12 Å) and one longer (3.55 Å) Nd(1)-Si(1) bond length. Ru(1) is bonded in a 12-coordinate geometry to four equivalent Nd(1), four equivalent Fe(1), and four equivalent Si(1) atoms. All Ru(1)-Fe(1) bond lengths are 2.95 Å. All Ru(1)-Si(1) bond lengths are 2.40 Å. Fe(1) is bonded to four equivalent Nd(1), four equivalent Ru(1), and four equivalent Si(1) atoms to form a mixture of distorted corner and face-sharing FeNd4Si4Ru4 cuboctahedra. All Fe(1)-Si(1) bond lengths are 2.40 Å. Si(1) is bonded in a 9-coordinate geometry to five equivalent Nd(1), two equivalent Ru(1), and two equivalent Fe(1) atoms.