Y3Co13B2 crystallizes in the orthorhombic Cmm2 space group. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded in a 18-coordinate geometry to two equivalent Co(2), two equivalent Co(8), four equivalent Co(1), four equivalent Co(7), and six equivalent Co(5) atoms. In the second Y site, Y(2) is bonded in a 18-coordinate geometry to two equivalent Co(4), two equivalent Co(8), four equivalent Co(3), four equivalent Co(7), and six equivalent Co(6) atoms. In the third Y site, Y(3) is bonded in a 18-coordinate geometry to two equivalent Co(2), two equivalent Co(4), four equivalent Co(1), four equivalent Co(3), and six equivalent B(1) atoms. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted L-shaped geometry to two equivalent Y(1), two equivalent Y(3), two equivalent Co(5), and two equivalent B(1) atoms. In the second Co site, Co(2) is bonded in a distorted L-shaped geometry to two equivalent Y(1), two equivalent Y(3), two equivalent Co(5), and two equivalent B(1) atoms. In the third Co site, Co(3) is bonded in a distorted L-shaped geometry to two equivalent Y(2), two equivalent Y(3), two equivalent Co(6), and two equivalent B(1) atoms. In the fourth Co site, Co(4) is bonded in a distorted L-shaped geometry to two equivalent Y(2), two equivalent Y(3), two equivalent Co(6), and two equivalent B(1) atoms. In the fifth Co site, Co(5) is bonded in a 9-coordinate geometry to three equivalent Y(1), one Co(2), one Co(8), two equivalent Co(1), and two equivalent Co(7) atoms. In the sixth Co site, Co(6) is bonded in a 9-coordinate geometry to three equivalent Y(2), one Co(4), one Co(8), two equivalent Co(3), and two equivalent Co(7) atoms. In the seventh Co site, Co(7) is bonded to two equivalent Y(1), two equivalent Y(2), two equivalent Co(5), two equivalent Co(6), two equivalent Co(7), and two equivalent Co(8) atoms to form a mixture of face, corner, and edge-sharing CoY4Co8 cuboctahedra. In the eighth Co site, Co(8) is bonded to two equivalent Y(1), two equivalent Y(2), two equivalent Co(5), two equivalent Co(6), and four equivalent Co(7) atoms to form a mixture of face, corner, and edge-sharing CoY4Co8 cuboctahedra. B(1) is bonded in a 6-coordinate geometry to three equivalent Y(3), one Co(2), one Co(4), two equivalent Co(1), and two equivalent Co(3) atoms.
Y3Co13B2 crystallizes in the orthorhombic Cmm2 space group. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded in a 18-coordinate geometry to two equivalent Co(2), two equivalent Co(8), four equivalent Co(1), four equivalent Co(7), and six equivalent Co(5) atoms. Both Y(1)-Co(2) bond lengths are 3.22 Å. Both Y(1)-Co(8) bond lengths are 3.14 Å. All Y(1)-Co(1) bond lengths are 3.22 Å. All Y(1)-Co(7) bond lengths are 3.14 Å. There are two shorter (2.87 Å) and four longer (2.88 Å) Y(1)-Co(5) bond lengths. In the second Y site, Y(2) is bonded in a 18-coordinate geometry to two equivalent Co(4), two equivalent Co(8), four equivalent Co(3), four equivalent Co(7), and six equivalent Co(6) atoms. Both Y(2)-Co(4) bond lengths are 3.22 Å. Both Y(2)-Co(8) bond lengths are 3.14 Å. All Y(2)-Co(3) bond lengths are 3.21 Å. All Y(2)-Co(7) bond lengths are 3.14 Å. There are two shorter (2.87 Å) and four longer (2.88 Å) Y(2)-Co(6) bond lengths. In the third Y site, Y(3) is bonded in a 18-coordinate geometry to two equivalent Co(2), two equivalent Co(4), four equivalent Co(1), four equivalent Co(3), and six equivalent B(1) atoms. Both Y(3)-Co(2) bond lengths are 2.90 Å. Both Y(3)-Co(4) bond lengths are 2.89 Å. All Y(3)-Co(1) bond lengths are 2.89 Å. All Y(3)-Co(3) bond lengths are 2.89 Å. There are two shorter (2.87 Å) and four longer (2.88 Å) Y(3)-B(1) bond lengths. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted L-shaped geometry to two equivalent Y(1), two equivalent Y(3), two equivalent Co(5), and two equivalent B(1) atoms. Both Co(1)-Co(5) bond lengths are 2.45 Å. Both Co(1)-B(1) bond lengths are 2.06 Å. In the second Co site, Co(2) is bonded in a distorted L-shaped geometry to two equivalent Y(1), two equivalent Y(3), two equivalent Co(5), and two equivalent B(1) atoms. Both Co(2)-Co(5) bond lengths are 2.44 Å. Both Co(2)-B(1) bond lengths are 2.06 Å. In the third Co site, Co(3) is bonded in a distorted L-shaped geometry to two equivalent Y(2), two equivalent Y(3), two equivalent Co(6), and two equivalent B(1) atoms. Both Co(3)-Co(6) bond lengths are 2.44 Å. Both Co(3)-B(1) bond lengths are 2.06 Å. In the fourth Co site, Co(4) is bonded in a distorted L-shaped geometry to two equivalent Y(2), two equivalent Y(3), two equivalent Co(6), and two equivalent B(1) atoms. Both Co(4)-Co(6) bond lengths are 2.44 Å. Both Co(4)-B(1) bond lengths are 2.05 Å. In the fifth Co site, Co(5) is bonded in a 9-coordinate geometry to three equivalent Y(1), one Co(2), one Co(8), two equivalent Co(1), and two equivalent Co(7) atoms. The Co(5)-Co(8) bond length is 2.44 Å. Both Co(5)-Co(7) bond lengths are 2.44 Å. In the sixth Co site, Co(6) is bonded in a 9-coordinate geometry to three equivalent Y(2), one Co(4), one Co(8), two equivalent Co(3), and two equivalent Co(7) atoms. The Co(6)-Co(8) bond length is 2.44 Å. Both Co(6)-Co(7) bond lengths are 2.44 Å. In the seventh Co site, Co(7) is bonded to two equivalent Y(1), two equivalent Y(2), two equivalent Co(5), two equivalent Co(6), two equivalent Co(7), and two equivalent Co(8) atoms to form a mixture of face, corner, and edge-sharing CoY4Co8 cuboctahedra. Both Co(7)-Co(7) bond lengths are 2.49 Å. Both Co(7)-Co(8) bond lengths are 2.49 Å. In the eighth Co site, Co(8) is bonded to two equivalent Y(1), two equivalent Y(2), two equivalent Co(5), two equivalent Co(6), and four equivalent Co(7) atoms to form a mixture of face, corner, and edge-sharing CoY4Co8 cuboctahedra. B(1) is bonded in a 6-coordinate geometry to three equivalent Y(3), one Co(2), one Co(4), two equivalent Co(1), and two equivalent Co(3) atoms.