PrMnCu10 crystallizes in the orthorhombic Cmmm space group. Pr(1) is bonded in a 20-coordinate geometry to two equivalent Mn(1), two equivalent Cu(7), four equivalent Cu(1), four equivalent Cu(2), four equivalent Cu(3), and four equivalent Cu(4) atoms. Mn(1) is bonded in a 15-coordinate geometry to two equivalent Pr(1), one Mn(1), two equivalent Cu(4), two equivalent Cu(6), four equivalent Cu(1), and four equivalent Cu(3) atoms. There are seven inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent Pr(1), two equivalent Mn(1), one Cu(1), one Cu(6), two equivalent Cu(2), two equivalent Cu(3), and two equivalent Cu(4) atoms to form distorted CuPr2Mn2Cu8 cuboctahedra that share  a cornercorner with one Cu(5)Cu12 cuboctahedra, corners with two equivalent Cu(6)Mn4Cu8 cuboctahedra, corners with two equivalent Cu(4)Pr2MnCu9 cuboctahedra, corners with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, corners with five equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(4)Pr2MnCu9 cuboctahedra,  a faceface with one Cu(5)Cu12 cuboctahedra,  a faceface with one Cu(6)Mn4Cu8 cuboctahedra, faces with three equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, faces with four equivalent Cu(4)Pr2MnCu9 cuboctahedra, and faces with six equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra. In the second Cu site, Cu(2) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Cu(2), one Cu(5), two equivalent Cu(1), two equivalent Cu(3), two equivalent Cu(4), and two equivalent Cu(7) atoms. In the third Cu site, Cu(3) is bonded to two equivalent Pr(1), two equivalent Mn(1), one Cu(6), one Cu(7), two equivalent Cu(1), two equivalent Cu(2), and two equivalent Cu(3) atoms to form CuPr2Mn2Cu8 cuboctahedra that share  a cornercorner with one Cu(5)Cu12 cuboctahedra, corners with four equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, corners with four equivalent Cu(4)Pr2MnCu9 cuboctahedra, corners with seven equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra,  an edgeedge with one Cu(3)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, edges with four equivalent Cu(4)Pr2MnCu9 cuboctahedra,  a faceface with one Cu(5)Cu12 cuboctahedra, faces with two equivalent Cu(6)Mn4Cu8 cuboctahedra, faces with three equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, faces with four equivalent Cu(4)Pr2MnCu9 cuboctahedra, and faces with six equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra. In the fourth Cu site, Cu(4) is bonded to two equivalent Pr(1), one Mn(1), one Cu(5), two equivalent Cu(1), two equivalent Cu(2), two equivalent Cu(4), and two equivalent Cu(7) atoms to form distorted CuPr2MnCu9 cuboctahedra that share  a cornercorner with one Cu(6)Mn4Cu8 cuboctahedra, corners with two equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, corners with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, corners with seven equivalent Cu(4)Pr2MnCu9 cuboctahedra,  an edgeedge with one Cu(4)Pr2MnCu9 cuboctahedra, edges with two equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, edges with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra,  a faceface with one Cu(6)Mn4Cu8 cuboctahedra, faces with two equivalent Cu(5)Cu12 cuboctahedra, faces with three equivalent Cu(4)Pr2MnCu9 cuboctahedra, faces with four equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, and faces with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra. In the fifth Cu site, Cu(5) is bonded to four equivalent Cu(2), four equivalent Cu(4), and four equivalent Cu(7) atoms to form CuCu12 cuboctahedra that share corners with four equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, corners with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(5)Cu12 cuboctahedra, faces with four equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, faces with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, and faces with eight equivalent Cu(4)Pr2MnCu9 cuboctahedra. In the sixth Cu site, Cu(6) is bonded to four equivalent Mn(1), four equivalent Cu(1), and four equivalent Cu(3) atoms to form CuMn4Cu8 cuboctahedra that share corners with four equivalent Cu(4)Pr2MnCu9 cuboctahedra, corners with eight equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(6)Mn4Cu8 cuboctahedra, faces with four equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, faces with four equivalent Cu(4)Pr2MnCu9 cuboctahedra, and faces with eight equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra. In the seventh Cu site, Cu(7) is bonded in a 15-coordinate geometry to two equivalent Pr(1), one Cu(7), two equivalent Cu(3), two equivalent Cu(5), four equivalent Cu(2), and four equivalent Cu(4) atoms.
PrMnCu10 crystallizes in the orthorhombic Cmmm space group. Pr(1) is bonded in a 20-coordinate geometry to two equivalent Mn(1), two equivalent Cu(7), four equivalent Cu(1), four equivalent Cu(2), four equivalent Cu(3), and four equivalent Cu(4) atoms. Both Pr(1)-Mn(1) bond lengths are 3.30 Å. Both Pr(1)-Cu(7) bond lengths are 3.32 Å. All Pr(1)-Cu(1) bond lengths are 3.06 Å. All Pr(1)-Cu(2) bond lengths are 3.07 Å. All Pr(1)-Cu(3) bond lengths are 3.25 Å. All Pr(1)-Cu(4) bond lengths are 3.26 Å. Mn(1) is bonded in a 15-coordinate geometry to two equivalent Pr(1), one Mn(1), two equivalent Cu(4), two equivalent Cu(6), four equivalent Cu(1), and four equivalent Cu(3) atoms. The Mn(1)-Mn(1) bond length is 2.73 Å. Both Mn(1)-Cu(4) bond lengths are 2.66 Å. Both Mn(1)-Cu(6) bond lengths are 2.81 Å. All Mn(1)-Cu(1) bond lengths are 2.88 Å. All Mn(1)-Cu(3) bond lengths are 2.76 Å. There are seven inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent Pr(1), two equivalent Mn(1), one Cu(1), one Cu(6), two equivalent Cu(2), two equivalent Cu(3), and two equivalent Cu(4) atoms to form distorted CuPr2Mn2Cu8 cuboctahedra that share  a cornercorner with one Cu(5)Cu12 cuboctahedra, corners with two equivalent Cu(6)Mn4Cu8 cuboctahedra, corners with two equivalent Cu(4)Pr2MnCu9 cuboctahedra, corners with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, corners with five equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(4)Pr2MnCu9 cuboctahedra,  a faceface with one Cu(5)Cu12 cuboctahedra,  a faceface with one Cu(6)Mn4Cu8 cuboctahedra, faces with three equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, faces with four equivalent Cu(4)Pr2MnCu9 cuboctahedra, and faces with six equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra. The Cu(1)-Cu(1) bond length is 2.62 Å. The Cu(1)-Cu(6) bond length is 2.45 Å. There is one shorter (2.57 Å) and one longer (2.58 Å) Cu(1)-Cu(2) bond length. Both Cu(1)-Cu(3) bond lengths are 2.55 Å. Both Cu(1)-Cu(4) bond lengths are 2.49 Å. In the second Cu site, Cu(2) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Cu(2), one Cu(5), two equivalent Cu(1), two equivalent Cu(3), two equivalent Cu(4), and two equivalent Cu(7) atoms. The Cu(2)-Cu(2) bond length is 2.60 Å. The Cu(2)-Cu(5) bond length is 2.43 Å. Both Cu(2)-Cu(3) bond lengths are 2.48 Å. Both Cu(2)-Cu(4) bond lengths are 2.55 Å. Both Cu(2)-Cu(7) bond lengths are 2.88 Å. In the third Cu site, Cu(3) is bonded to two equivalent Pr(1), two equivalent Mn(1), one Cu(6), one Cu(7), two equivalent Cu(1), two equivalent Cu(2), and two equivalent Cu(3) atoms to form CuPr2Mn2Cu8 cuboctahedra that share  a cornercorner with one Cu(5)Cu12 cuboctahedra, corners with four equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, corners with four equivalent Cu(4)Pr2MnCu9 cuboctahedra, corners with seven equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra,  an edgeedge with one Cu(3)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, edges with four equivalent Cu(4)Pr2MnCu9 cuboctahedra,  a faceface with one Cu(5)Cu12 cuboctahedra, faces with two equivalent Cu(6)Mn4Cu8 cuboctahedra, faces with three equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, faces with four equivalent Cu(4)Pr2MnCu9 cuboctahedra, and faces with six equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra. The Cu(3)-Cu(6) bond length is 2.45 Å. The Cu(3)-Cu(7) bond length is 2.69 Å. There is one shorter (2.37 Å) and one longer (2.55 Å) Cu(3)-Cu(3) bond length. In the fourth Cu site, Cu(4) is bonded to two equivalent Pr(1), one Mn(1), one Cu(5), two equivalent Cu(1), two equivalent Cu(2), two equivalent Cu(4), and two equivalent Cu(7) atoms to form distorted CuPr2MnCu9 cuboctahedra that share  a cornercorner with one Cu(6)Mn4Cu8 cuboctahedra, corners with two equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, corners with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, corners with seven equivalent Cu(4)Pr2MnCu9 cuboctahedra,  an edgeedge with one Cu(4)Pr2MnCu9 cuboctahedra, edges with two equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, edges with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra,  a faceface with one Cu(6)Mn4Cu8 cuboctahedra, faces with two equivalent Cu(5)Cu12 cuboctahedra, faces with three equivalent Cu(4)Pr2MnCu9 cuboctahedra, faces with four equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, and faces with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra. The Cu(4)-Cu(5) bond length is 2.44 Å. There is one shorter (2.37 Å) and one longer (2.56 Å) Cu(4)-Cu(4) bond length. Both Cu(4)-Cu(7) bond lengths are 2.74 Å. In the fifth Cu site, Cu(5) is bonded to four equivalent Cu(2), four equivalent Cu(4), and four equivalent Cu(7) atoms to form CuCu12 cuboctahedra that share corners with four equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, corners with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(5)Cu12 cuboctahedra, faces with four equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, faces with four equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra, and faces with eight equivalent Cu(4)Pr2MnCu9 cuboctahedra. All Cu(5)-Cu(7) bond lengths are 2.80 Å. In the sixth Cu site, Cu(6) is bonded to four equivalent Mn(1), four equivalent Cu(1), and four equivalent Cu(3) atoms to form CuMn4Cu8 cuboctahedra that share corners with four equivalent Cu(4)Pr2MnCu9 cuboctahedra, corners with eight equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, edges with two equivalent Cu(6)Mn4Cu8 cuboctahedra, faces with four equivalent Cu(1)Pr2Mn2Cu8 cuboctahedra, faces with four equivalent Cu(4)Pr2MnCu9 cuboctahedra, and faces with eight equivalent Cu(3)Pr2Mn2Cu8 cuboctahedra. In the seventh Cu site, Cu(7) is bonded in a 15-coordinate geometry to two equivalent Pr(1), one Cu(7), two equivalent Cu(3), two equivalent Cu(5), four equivalent Cu(2), and four equivalent Cu(4) atoms. The Cu(7)-Cu(7) bond length is 2.67 Å.