PrLaNi10 crystallizes in the orthorhombic Pmmm space group. Pr(1) is bonded in a 18-coordinate geometry to two equivalent Ni(2), four equivalent Ni(1), four equivalent Ni(3), and eight equivalent Ni(5) atoms. La(1) is bonded in a 18-coordinate geometry to two equivalent Ni(1), four equivalent Ni(2), four equivalent Ni(4), and eight equivalent Ni(5) atoms. There are five inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to two equivalent Pr(1), one La(1), two equivalent Ni(3), and four equivalent Ni(5) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to one Pr(1), two equivalent La(1), two equivalent Ni(4), and four equivalent Ni(5) atoms. In the third Ni site, Ni(3) is bonded to four equivalent Pr(1), four equivalent Ni(1), and four equivalent Ni(5) atoms to form NiPr4Ni8 cuboctahedra that share corners with four equivalent Ni(4)La4Ni8 cuboctahedra, corners with four equivalent Ni(3)Pr4Ni8 cuboctahedra, corners with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra, edges with two equivalent Ni(3)Pr4Ni8 cuboctahedra, edges with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra, faces with two equivalent Ni(3)Pr4Ni8 cuboctahedra, and faces with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra. In the fourth Ni site, Ni(4) is bonded to four equivalent La(1), four equivalent Ni(2), and four equivalent Ni(5) atoms to form NiLa4Ni8 cuboctahedra that share corners with four equivalent Ni(4)La4Ni8 cuboctahedra, corners with four equivalent Ni(3)Pr4Ni8 cuboctahedra, corners with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra, edges with two equivalent Ni(4)La4Ni8 cuboctahedra, edges with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra, faces with two equivalent Ni(4)La4Ni8 cuboctahedra, and faces with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra. In the fifth Ni site, Ni(5) is bonded to two equivalent Pr(1), two equivalent La(1), one Ni(3), one Ni(4), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(5) atoms to form NiLa2Pr2Ni8 cuboctahedra that share corners with two equivalent Ni(4)La4Ni8 cuboctahedra, corners with two equivalent Ni(3)Pr4Ni8 cuboctahedra, corners with twelve equivalent Ni(5)La2Pr2Ni8 cuboctahedra, edges with two equivalent Ni(4)La4Ni8 cuboctahedra, edges with two equivalent Ni(3)Pr4Ni8 cuboctahedra, edges with six equivalent Ni(5)La2Pr2Ni8 cuboctahedra, faces with two equivalent Ni(4)La4Ni8 cuboctahedra, faces with two equivalent Ni(3)Pr4Ni8 cuboctahedra, and faces with six equivalent Ni(5)La2Pr2Ni8 cuboctahedra.
PrLaNi10 crystallizes in the orthorhombic Pmmm space group. Pr(1) is bonded in a 18-coordinate geometry to two equivalent Ni(2), four equivalent Ni(1), four equivalent Ni(3), and eight equivalent Ni(5) atoms. Both Pr(1)-Ni(2) bond lengths are 2.86 Å. All Pr(1)-Ni(1) bond lengths are 2.86 Å. All Pr(1)-Ni(3) bond lengths are 3.16 Å. All Pr(1)-Ni(5) bond lengths are 3.15 Å. La(1) is bonded in a 18-coordinate geometry to two equivalent Ni(1), four equivalent Ni(2), four equivalent Ni(4), and eight equivalent Ni(5) atoms. Both La(1)-Ni(1) bond lengths are 2.85 Å. All La(1)-Ni(2) bond lengths are 2.85 Å. All La(1)-Ni(4) bond lengths are 3.16 Å. All La(1)-Ni(5) bond lengths are 3.17 Å. There are five inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to two equivalent Pr(1), one La(1), two equivalent Ni(3), and four equivalent Ni(5) atoms. Both Ni(1)-Ni(3) bond lengths are 2.43 Å. All Ni(1)-Ni(5) bond lengths are 2.43 Å. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to one Pr(1), two equivalent La(1), two equivalent Ni(4), and four equivalent Ni(5) atoms. Both Ni(2)-Ni(4) bond lengths are 2.43 Å. All Ni(2)-Ni(5) bond lengths are 2.43 Å. In the third Ni site, Ni(3) is bonded to four equivalent Pr(1), four equivalent Ni(1), and four equivalent Ni(5) atoms to form NiPr4Ni8 cuboctahedra that share corners with four equivalent Ni(4)La4Ni8 cuboctahedra, corners with four equivalent Ni(3)Pr4Ni8 cuboctahedra, corners with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra, edges with two equivalent Ni(3)Pr4Ni8 cuboctahedra, edges with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra, faces with two equivalent Ni(3)Pr4Ni8 cuboctahedra, and faces with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra. All Ni(3)-Ni(5) bond lengths are 2.46 Å. In the fourth Ni site, Ni(4) is bonded to four equivalent La(1), four equivalent Ni(2), and four equivalent Ni(5) atoms to form NiLa4Ni8 cuboctahedra that share corners with four equivalent Ni(4)La4Ni8 cuboctahedra, corners with four equivalent Ni(3)Pr4Ni8 cuboctahedra, corners with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra, edges with two equivalent Ni(4)La4Ni8 cuboctahedra, edges with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra, faces with two equivalent Ni(4)La4Ni8 cuboctahedra, and faces with eight equivalent Ni(5)La2Pr2Ni8 cuboctahedra. All Ni(4)-Ni(5) bond lengths are 2.48 Å. In the fifth Ni site, Ni(5) is bonded to two equivalent Pr(1), two equivalent La(1), one Ni(3), one Ni(4), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(5) atoms to form NiLa2Pr2Ni8 cuboctahedra that share corners with two equivalent Ni(4)La4Ni8 cuboctahedra, corners with two equivalent Ni(3)Pr4Ni8 cuboctahedra, corners with twelve equivalent Ni(5)La2Pr2Ni8 cuboctahedra, edges with two equivalent Ni(4)La4Ni8 cuboctahedra, edges with two equivalent Ni(3)Pr4Ni8 cuboctahedra, edges with six equivalent Ni(5)La2Pr2Ni8 cuboctahedra, faces with two equivalent Ni(4)La4Ni8 cuboctahedra, faces with two equivalent Ni(3)Pr4Ni8 cuboctahedra, and faces with six equivalent Ni(5)La2Pr2Ni8 cuboctahedra. There is one shorter (2.46 Å) and one longer (2.48 Å) Ni(5)-Ni(5) bond length.