PrCo10Ga3 crystallizes in the orthorhombic Fmm2 space group. Pr(1) is bonded in a 24-coordinate geometry to two equivalent Co(3), two equivalent Co(4), two equivalent Co(5), two equivalent Co(6), two equivalent Co(9), four equivalent Co(7), four equivalent Co(8), two equivalent Ga(1), two equivalent Ga(2), and two equivalent Ga(3) atoms. There are nine inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent Co(4), two equivalent Co(6), two equivalent Co(9), four equivalent Co(7), and two equivalent Ga(2) atoms to form CoGa2Co10 cuboctahedra that share faces with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra and faces with two equivalent Co(9)Pr2GaCo9 cuboctahedra. In the second Co site, Co(2) is bonded to two equivalent Co(3), two equivalent Co(5), four equivalent Co(8), two equivalent Ga(1), and two equivalent Ga(3) atoms to form CoGa4Co8 cuboctahedra that share corners with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra, corners with two equivalent Co(9)Pr2GaCo9 cuboctahedra, faces with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra, and faces with two equivalent Co(9)Pr2GaCo9 cuboctahedra. In the third Co site, Co(3) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(2), one Co(3), one Co(9), two equivalent Co(6), two equivalent Co(8), one Ga(2), and two equivalent Ga(1) atoms. In the fourth Co site, Co(4) is bonded to two equivalent Pr(1), one Co(1), one Co(4), two equivalent Co(5), two equivalent Co(7), two equivalent Co(9), one Ga(1), and one Ga(3) atom to form distorted CoPr2Ga2Co8 cuboctahedra that share  a cornercorner with one Co(2)Ga4Co8 cuboctahedra, corners with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra, corners with two equivalent Co(9)Pr2GaCo9 cuboctahedra,  a faceface with one Co(1)Ga2Co10 cuboctahedra,  a faceface with one Co(2)Ga4Co8 cuboctahedra,  a faceface with one Co(4)Pr2Ga2Co8 cuboctahedra, and faces with two equivalent Co(9)Pr2GaCo9 cuboctahedra. In the fifth Co site, Co(5) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(2), one Co(5), one Co(9), two equivalent Co(4), two equivalent Co(8), one Ga(2), and two equivalent Ga(3) atoms. In the sixth Co site, Co(6) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(1), one Co(6), two equivalent Co(3), two equivalent Co(7), one Ga(1), one Ga(3), and two equivalent Ga(2) atoms. In the seventh Co site, Co(7) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(1), one Co(4), one Co(6), one Co(7), one Co(9), two equivalent Co(8), one Ga(1), one Ga(2), and one Ga(3) atom. In the eighth Co site, Co(8) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(2), one Co(3), one Co(5), one Co(8), one Co(9), two equivalent Co(7), one Ga(1), one Ga(2), and one Ga(3) atom. In the ninth Co site, Co(9) is bonded to two equivalent Pr(1), one Co(1), one Co(3), one Co(5), two equivalent Co(4), two equivalent Co(7), two equivalent Co(8), and one Ga(2) atom to form distorted CoPr2GaCo9 cuboctahedra that share  a cornercorner with one Co(2)Ga4Co8 cuboctahedra, corners with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra, corners with two equivalent Co(9)Pr2GaCo9 cuboctahedra,  a faceface with one Co(1)Ga2Co10 cuboctahedra,  a faceface with one Co(2)Ga4Co8 cuboctahedra,  a faceface with one Co(9)Pr2GaCo9 cuboctahedra, and faces with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent Pr(1), one Co(2), one Co(4), one Co(6), two equivalent Co(3), two equivalent Co(7), and two equivalent Co(8) atoms. In the second Ga site, Ga(2) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(1), one Co(3), one Co(5), one Co(9), two equivalent Co(6), two equivalent Co(7), and two equivalent Co(8) atoms. In the third Ga site, Ga(3) is bonded in a 11-coordinate geometry to two equivalent Pr(1), one Co(2), one Co(4), one Co(6), two equivalent Co(5), two equivalent Co(7), and two equivalent Co(8) atoms.
PrCo10Ga3 crystallizes in the orthorhombic Fmm2 space group. Pr(1) is bonded in a 24-coordinate geometry to two equivalent Co(3), two equivalent Co(4), two equivalent Co(5), two equivalent Co(6), two equivalent Co(9), four equivalent Co(7), four equivalent Co(8), two equivalent Ga(1), two equivalent Ga(2), and two equivalent Ga(3) atoms. Both Pr(1)-Co(3) bond lengths are 3.27 Å. Both Pr(1)-Co(4) bond lengths are 3.35 Å. Both Pr(1)-Co(5) bond lengths are 3.29 Å. Both Pr(1)-Co(6) bond lengths are 3.34 Å. Both Pr(1)-Co(9) bond lengths are 3.29 Å. There are two shorter (3.30 Å) and two longer (3.40 Å) Pr(1)-Co(7) bond lengths. There are two shorter (3.32 Å) and two longer (3.37 Å) Pr(1)-Co(8) bond lengths. Both Pr(1)-Ga(1) bond lengths are 3.27 Å. Both Pr(1)-Ga(2) bond lengths are 3.29 Å. Both Pr(1)-Ga(3) bond lengths are 3.30 Å. There are nine inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent Co(4), two equivalent Co(6), two equivalent Co(9), four equivalent Co(7), and two equivalent Ga(2) atoms to form CoGa2Co10 cuboctahedra that share faces with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra and faces with two equivalent Co(9)Pr2GaCo9 cuboctahedra. Both Co(1)-Co(4) bond lengths are 2.36 Å. Both Co(1)-Co(6) bond lengths are 2.42 Å. Both Co(1)-Co(9) bond lengths are 2.42 Å. All Co(1)-Co(7) bond lengths are 2.44 Å. Both Co(1)-Ga(2) bond lengths are 2.47 Å. In the second Co site, Co(2) is bonded to two equivalent Co(3), two equivalent Co(5), four equivalent Co(8), two equivalent Ga(1), and two equivalent Ga(3) atoms to form CoGa4Co8 cuboctahedra that share corners with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra, corners with two equivalent Co(9)Pr2GaCo9 cuboctahedra, faces with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra, and faces with two equivalent Co(9)Pr2GaCo9 cuboctahedra. Both Co(2)-Co(3) bond lengths are 2.44 Å. Both Co(2)-Co(5) bond lengths are 2.49 Å. All Co(2)-Co(8) bond lengths are 2.45 Å. Both Co(2)-Ga(1) bond lengths are 2.47 Å. Both Co(2)-Ga(3) bond lengths are 2.47 Å. In the third Co site, Co(3) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(2), one Co(3), one Co(9), two equivalent Co(6), two equivalent Co(8), one Ga(2), and two equivalent Ga(1) atoms. The Co(3)-Co(3) bond length is 2.77 Å. The Co(3)-Co(9) bond length is 2.38 Å. Both Co(3)-Co(6) bond lengths are 2.57 Å. Both Co(3)-Co(8) bond lengths are 2.51 Å. The Co(3)-Ga(2) bond length is 2.45 Å. Both Co(3)-Ga(1) bond lengths are 2.49 Å. In the fourth Co site, Co(4) is bonded to two equivalent Pr(1), one Co(1), one Co(4), two equivalent Co(5), two equivalent Co(7), two equivalent Co(9), one Ga(1), and one Ga(3) atom to form distorted CoPr2Ga2Co8 cuboctahedra that share  a cornercorner with one Co(2)Ga4Co8 cuboctahedra, corners with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra, corners with two equivalent Co(9)Pr2GaCo9 cuboctahedra,  a faceface with one Co(1)Ga2Co10 cuboctahedra,  a faceface with one Co(2)Ga4Co8 cuboctahedra,  a faceface with one Co(4)Pr2Ga2Co8 cuboctahedra, and faces with two equivalent Co(9)Pr2GaCo9 cuboctahedra. The Co(4)-Co(4) bond length is 2.48 Å. Both Co(4)-Co(5) bond lengths are 2.50 Å. Both Co(4)-Co(7) bond lengths are 2.53 Å. Both Co(4)-Co(9) bond lengths are 2.44 Å. The Co(4)-Ga(1) bond length is 2.44 Å. The Co(4)-Ga(3) bond length is 2.46 Å. In the fifth Co site, Co(5) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(2), one Co(5), one Co(9), two equivalent Co(4), two equivalent Co(8), one Ga(2), and two equivalent Ga(3) atoms. The Co(5)-Co(5) bond length is 2.70 Å. The Co(5)-Co(9) bond length is 2.43 Å. Both Co(5)-Co(8) bond lengths are 2.58 Å. The Co(5)-Ga(2) bond length is 2.40 Å. Both Co(5)-Ga(3) bond lengths are 2.49 Å. In the sixth Co site, Co(6) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(1), one Co(6), two equivalent Co(3), two equivalent Co(7), one Ga(1), one Ga(3), and two equivalent Ga(2) atoms. The Co(6)-Co(6) bond length is 2.56 Å. Both Co(6)-Co(7) bond lengths are 2.58 Å. The Co(6)-Ga(1) bond length is 2.41 Å. The Co(6)-Ga(3) bond length is 2.41 Å. Both Co(6)-Ga(2) bond lengths are 2.47 Å. In the seventh Co site, Co(7) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(1), one Co(4), one Co(6), one Co(7), one Co(9), two equivalent Co(8), one Ga(1), one Ga(2), and one Ga(3) atom. The Co(7)-Co(7) bond length is 2.71 Å. The Co(7)-Co(9) bond length is 2.52 Å. There is one shorter (2.35 Å) and one longer (2.37 Å) Co(7)-Co(8) bond length. The Co(7)-Ga(1) bond length is 2.53 Å. The Co(7)-Ga(2) bond length is 2.58 Å. The Co(7)-Ga(3) bond length is 2.55 Å. In the eighth Co site, Co(8) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(2), one Co(3), one Co(5), one Co(8), one Co(9), two equivalent Co(7), one Ga(1), one Ga(2), and one Ga(3) atom. The Co(8)-Co(8) bond length is 2.66 Å. The Co(8)-Co(9) bond length is 2.50 Å. The Co(8)-Ga(1) bond length is 2.61 Å. The Co(8)-Ga(2) bond length is 2.52 Å. The Co(8)-Ga(3) bond length is 2.60 Å. In the ninth Co site, Co(9) is bonded to two equivalent Pr(1), one Co(1), one Co(3), one Co(5), two equivalent Co(4), two equivalent Co(7), two equivalent Co(8), and one Ga(2) atom to form distorted CoPr2GaCo9 cuboctahedra that share  a cornercorner with one Co(2)Ga4Co8 cuboctahedra, corners with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra, corners with two equivalent Co(9)Pr2GaCo9 cuboctahedra,  a faceface with one Co(1)Ga2Co10 cuboctahedra,  a faceface with one Co(2)Ga4Co8 cuboctahedra,  a faceface with one Co(9)Pr2GaCo9 cuboctahedra, and faces with two equivalent Co(4)Pr2Ga2Co8 cuboctahedra. The Co(9)-Ga(2) bond length is 2.79 Å. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent Pr(1), one Co(2), one Co(4), one Co(6), two equivalent Co(3), two equivalent Co(7), and two equivalent Co(8) atoms. In the second Ga site, Ga(2) is bonded in a 12-coordinate geometry to two equivalent Pr(1), one Co(1), one Co(3), one Co(5), one Co(9), two equivalent Co(6), two equivalent Co(7), and two equivalent Co(8) atoms. In the third Ga site, Ga(3) is bonded in a 11-coordinate geometry to two equivalent Pr(1), one Co(2), one Co(4), one Co(6), two equivalent Co(5), two equivalent Co(7), and two equivalent Co(8) atoms.