PrY(Co3Ni2)2 crystallizes in the orthorhombic Pmmm space group. Pr(1) is bonded in a 18-coordinate geometry to two equivalent Co(1), four equivalent Co(2), four equivalent Co(4), and eight equivalent Ni(1) atoms. Y(1) is bonded in a 18-coordinate geometry to two equivalent Co(2), four equivalent Co(1), four equivalent Co(3), and eight equivalent Ni(1) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to one Pr(1), two equivalent Y(1), two equivalent Co(3), and four equivalent Ni(1) atoms. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to two equivalent Pr(1), one Y(1), two equivalent Co(4), and four equivalent Ni(1) atoms. In the third Co site, Co(3) is bonded to four equivalent Y(1), four equivalent Co(1), and four equivalent Ni(1) atoms to form CoY4Co4Ni4 cuboctahedra that share corners with four equivalent Co(4)Pr4Co4Ni4 cuboctahedra, corners with four equivalent Co(3)Y4Co4Ni4 cuboctahedra, corners with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, edges with two equivalent Co(3)Y4Co4Ni4 cuboctahedra, edges with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, faces with two equivalent Co(3)Y4Co4Ni4 cuboctahedra, and faces with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra. In the fourth Co site, Co(4) is bonded to four equivalent Pr(1), four equivalent Co(2), and four equivalent Ni(1) atoms to form CoPr4Co4Ni4 cuboctahedra that share corners with four equivalent Co(4)Pr4Co4Ni4 cuboctahedra, corners with four equivalent Co(3)Y4Co4Ni4 cuboctahedra, corners with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, edges with two equivalent Co(4)Pr4Co4Ni4 cuboctahedra, edges with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, faces with two equivalent Co(4)Pr4Co4Ni4 cuboctahedra, and faces with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra. Ni(1) is bonded to two equivalent Pr(1), two equivalent Y(1), one Co(3), one Co(4), two equivalent Co(1), two equivalent Co(2), and two equivalent Ni(1) atoms to form NiPr2Y2Co6Ni2 cuboctahedra that share corners with two equivalent Co(4)Pr4Co4Ni4 cuboctahedra, corners with two equivalent Co(3)Y4Co4Ni4 cuboctahedra, corners with twelve equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, edges with two equivalent Co(4)Pr4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Y4Co4Ni4 cuboctahedra, edges with six equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, faces with two equivalent Co(4)Pr4Co4Ni4 cuboctahedra, faces with two equivalent Co(3)Y4Co4Ni4 cuboctahedra, and faces with six equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra.
PrY(Co3Ni2)2 crystallizes in the orthorhombic Pmmm space group. Pr(1) is bonded in a 18-coordinate geometry to two equivalent Co(1), four equivalent Co(2), four equivalent Co(4), and eight equivalent Ni(1) atoms. Both Pr(1)-Co(1) bond lengths are 2.92 Å. All Pr(1)-Co(2) bond lengths are 2.87 Å. All Pr(1)-Co(4) bond lengths are 3.19 Å. All Pr(1)-Ni(1) bond lengths are 3.20 Å. Y(1) is bonded in a 18-coordinate geometry to two equivalent Co(2), four equivalent Co(1), four equivalent Co(3), and eight equivalent Ni(1) atoms. Both Y(1)-Co(2) bond lengths are 2.86 Å. All Y(1)-Co(1) bond lengths are 2.85 Å. All Y(1)-Co(3) bond lengths are 3.19 Å. All Y(1)-Ni(1) bond lengths are 3.14 Å. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to one Pr(1), two equivalent Y(1), two equivalent Co(3), and four equivalent Ni(1) atoms. Both Co(1)-Co(3) bond lengths are 2.40 Å. All Co(1)-Ni(1) bond lengths are 2.46 Å. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to two equivalent Pr(1), one Y(1), two equivalent Co(4), and four equivalent Ni(1) atoms. Both Co(2)-Co(4) bond lengths are 2.43 Å. All Co(2)-Ni(1) bond lengths are 2.45 Å. In the third Co site, Co(3) is bonded to four equivalent Y(1), four equivalent Co(1), and four equivalent Ni(1) atoms to form CoY4Co4Ni4 cuboctahedra that share corners with four equivalent Co(4)Pr4Co4Ni4 cuboctahedra, corners with four equivalent Co(3)Y4Co4Ni4 cuboctahedra, corners with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, edges with two equivalent Co(3)Y4Co4Ni4 cuboctahedra, edges with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, faces with two equivalent Co(3)Y4Co4Ni4 cuboctahedra, and faces with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra. All Co(3)-Ni(1) bond lengths are 2.46 Å. In the fourth Co site, Co(4) is bonded to four equivalent Pr(1), four equivalent Co(2), and four equivalent Ni(1) atoms to form CoPr4Co4Ni4 cuboctahedra that share corners with four equivalent Co(4)Pr4Co4Ni4 cuboctahedra, corners with four equivalent Co(3)Y4Co4Ni4 cuboctahedra, corners with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, edges with two equivalent Co(4)Pr4Co4Ni4 cuboctahedra, edges with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, faces with two equivalent Co(4)Pr4Co4Ni4 cuboctahedra, and faces with eight equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra. All Co(4)-Ni(1) bond lengths are 2.50 Å. Ni(1) is bonded to two equivalent Pr(1), two equivalent Y(1), one Co(3), one Co(4), two equivalent Co(1), two equivalent Co(2), and two equivalent Ni(1) atoms to form NiPr2Y2Co6Ni2 cuboctahedra that share corners with two equivalent Co(4)Pr4Co4Ni4 cuboctahedra, corners with two equivalent Co(3)Y4Co4Ni4 cuboctahedra, corners with twelve equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, edges with two equivalent Co(4)Pr4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Y4Co4Ni4 cuboctahedra, edges with six equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra, faces with two equivalent Co(4)Pr4Co4Ni4 cuboctahedra, faces with two equivalent Co(3)Y4Co4Ni4 cuboctahedra, and faces with six equivalent Ni(1)Pr2Y2Co6Ni2 cuboctahedra. There is one shorter (2.47 Å) and one longer (2.53 Å) Ni(1)-Ni(1) bond length.