Nd2Mn5Co12 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 18-coordinate geometry to six equivalent Co(1) and twelve equivalent Co(2) atoms. In the second Nd site, Nd(2) is bonded in a 20-coordinate geometry to two equivalent Mn(1), six equivalent Mn(2), six equivalent Co(1), and six equivalent Co(2) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 14-coordinate geometry to one Nd(2), one Mn(1), three equivalent Mn(2), three equivalent Co(2), and six equivalent Co(1) atoms. In the second Mn site, Mn(2) is bonded in a 8-coordinate geometry to two equivalent Nd(2), two equivalent Mn(1), four equivalent Co(1), and four equivalent Co(2) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 12-coordinate geometry to one Nd(1), one Nd(2), two equivalent Mn(1), two equivalent Mn(2), two equivalent Co(1), and four equivalent Co(2) atoms. In the second Co site, Co(2) is bonded in a 12-coordinate geometry to one Nd(2), two equivalent Nd(1), one Mn(1), two equivalent Mn(2), two equivalent Co(2), and four equivalent Co(1) atoms.
Nd2Mn5Co12 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 18-coordinate geometry to six equivalent Co(1) and twelve equivalent Co(2) atoms. All Nd(1)-Co(1) bond lengths are 2.98 Å. There are six shorter (3.11 Å) and six longer (3.24 Å) Nd(1)-Co(2) bond lengths. In the second Nd site, Nd(2) is bonded in a 20-coordinate geometry to two equivalent Mn(1), six equivalent Mn(2), six equivalent Co(1), and six equivalent Co(2) atoms. Both Nd(2)-Mn(1) bond lengths are 3.01 Å. All Nd(2)-Mn(2) bond lengths are 3.18 Å. All Nd(2)-Co(1) bond lengths are 3.02 Å. All Nd(2)-Co(2) bond lengths are 3.12 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 14-coordinate geometry to one Nd(2), one Mn(1), three equivalent Mn(2), three equivalent Co(2), and six equivalent Co(1) atoms. The Mn(1)-Mn(1) bond length is 2.22 Å. All Mn(1)-Mn(2) bond lengths are 2.60 Å. All Mn(1)-Co(2) bond lengths are 2.64 Å. All Mn(1)-Co(1) bond lengths are 2.66 Å. In the second Mn site, Mn(2) is bonded in a 8-coordinate geometry to two equivalent Nd(2), two equivalent Mn(1), four equivalent Co(1), and four equivalent Co(2) atoms. All Mn(2)-Co(1) bond lengths are 2.42 Å. All Mn(2)-Co(2) bond lengths are 2.43 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 12-coordinate geometry to one Nd(1), one Nd(2), two equivalent Mn(1), two equivalent Mn(2), two equivalent Co(1), and four equivalent Co(2) atoms. There is one shorter (2.38 Å) and one longer (2.46 Å) Co(1)-Co(1) bond length. There are two shorter (2.48 Å) and two longer (2.65 Å) Co(1)-Co(2) bond lengths. In the second Co site, Co(2) is bonded in a 12-coordinate geometry to one Nd(2), two equivalent Nd(1), one Mn(1), two equivalent Mn(2), two equivalent Co(2), and four equivalent Co(1) atoms. Both Co(2)-Co(2) bond lengths are 2.42 Å.