Pr3Co13B2 crystallizes in the hexagonal P6/mmm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 18-coordinate geometry to six equivalent Co(1), six equivalent Co(2), and six equivalent Co(3) atoms. In the second Pr site, Pr(2) is bonded in a 18-coordinate geometry to twelve equivalent Co(3) and six equivalent B(1) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to four equivalent Pr(1), four equivalent Co(1), and four equivalent Co(2) atoms to form a mixture of corner, edge, and face-sharing CoPr4Co8 cuboctahedra. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to three equivalent Pr(1), three equivalent Co(1), and three equivalent Co(3) atoms. In the third Co site, Co(3) is bonded in a distorted L-shaped geometry to two equivalent Pr(1), two equivalent Pr(2), two equivalent Co(2), and two equivalent B(1) atoms. B(1) is bonded in a 6-coordinate geometry to three equivalent Pr(2) and six equivalent Co(3) atoms.
Pr3Co13B2 crystallizes in the hexagonal P6/mmm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 18-coordinate geometry to six equivalent Co(1), six equivalent Co(2), and six equivalent Co(3) atoms. All Pr(1)-Co(1) bond lengths are 3.20 Å. All Pr(1)-Co(2) bond lengths are 2.95 Å. All Pr(1)-Co(3) bond lengths are 3.27 Å. In the second Pr site, Pr(2) is bonded in a 18-coordinate geometry to twelve equivalent Co(3) and six equivalent B(1) atoms. All Pr(2)-Co(3) bond lengths are 2.94 Å. All Pr(2)-B(1) bond lengths are 2.95 Å. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to four equivalent Pr(1), four equivalent Co(1), and four equivalent Co(2) atoms to form a mixture of corner, edge, and face-sharing CoPr4Co8 cuboctahedra. All Co(1)-Co(1) bond lengths are 2.56 Å. All Co(1)-Co(2) bond lengths are 2.46 Å. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to three equivalent Pr(1), three equivalent Co(1), and three equivalent Co(3) atoms. All Co(2)-Co(3) bond lengths are 2.48 Å. In the third Co site, Co(3) is bonded in a distorted L-shaped geometry to two equivalent Pr(1), two equivalent Pr(2), two equivalent Co(2), and two equivalent B(1) atoms. Both Co(3)-B(1) bond lengths are 2.07 Å. B(1) is bonded in a 6-coordinate geometry to three equivalent Pr(2) and six equivalent Co(3) atoms.