PrCo12B6 crystallizes in the trigonal R-3m space group. Pr(1) is bonded in a 24-coordinate geometry to six equivalent Co(2), twelve equivalent Co(1), and six equivalent B(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(2) is bonded in a distorted T-shaped geometry to one Pr(1) and three equivalent B(1) atoms. In the second Co site, Co(1) is bonded in a 4-coordinate geometry to two equivalent Pr(1) and four equivalent B(1) atoms. B(1) is bonded in a 7-coordinate geometry to one Pr(1), three equivalent Co(2), and four equivalent Co(1) atoms.
PrCo12B6 crystallizes in the trigonal R-3m space group. Pr(1) is bonded in a 24-coordinate geometry to six equivalent Co(2), twelve equivalent Co(1), and six equivalent B(1) atoms. All Pr(1)-Co(2) bond lengths are 3.11 Å. All Pr(1)-Co(1) bond lengths are 3.23 Å. All Pr(1)-B(1) bond lengths are 3.04 Å. There are two inequivalent Co sites. In the first Co site, Co(2) is bonded in a distorted T-shaped geometry to one Pr(1) and three equivalent B(1) atoms. There is one shorter (2.08 Å) and two longer (2.10 Å) Co(2)-B(1) bond lengths. In the second Co site, Co(1) is bonded in a 4-coordinate geometry to two equivalent Pr(1) and four equivalent B(1) atoms. There are two shorter (2.02 Å) and two longer (2.03 Å) Co(1)-B(1) bond lengths. B(1) is bonded in a 7-coordinate geometry to one Pr(1), three equivalent Co(2), and four equivalent Co(1) atoms.