YbCoB4 crystallizes in the orthorhombic Pbam space group. Yb(1) is bonded in a 14-coordinate geometry to two equivalent B(2), four equivalent B(1), four equivalent B(3), and four equivalent B(4) atoms. Co(1) is bonded in a 10-coordinate geometry to two equivalent B(1), two equivalent B(3), two equivalent B(4), and four equivalent B(2) atoms. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to four equivalent Yb(1), two equivalent Co(1), one B(2), and two equivalent B(3) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to two equivalent Yb(1), four equivalent Co(1), one B(1), one B(2), and one B(4) atom. In the third B site, B(3) is bonded in a 9-coordinate geometry to four equivalent Yb(1), two equivalent Co(1), one B(4), and two equivalent B(1) atoms. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to four equivalent Yb(1), two equivalent Co(1), one B(2), one B(3), and one B(4) atom.
YbCoB4 crystallizes in the orthorhombic Pbam space group. Yb(1) is bonded in a 14-coordinate geometry to two equivalent B(2), four equivalent B(1), four equivalent B(3), and four equivalent B(4) atoms. Both Yb(1)-B(2) bond lengths are 2.56 Å. There are two shorter (2.62 Å) and two longer (2.67 Å) Yb(1)-B(1) bond lengths. There are two shorter (2.65 Å) and two longer (2.68 Å) Yb(1)-B(3) bond lengths. All Yb(1)-B(4) bond lengths are 2.66 Å. Co(1) is bonded in a 10-coordinate geometry to two equivalent B(1), two equivalent B(3), two equivalent B(4), and four equivalent B(2) atoms. Both Co(1)-B(1) bond lengths are 2.22 Å. Both Co(1)-B(3) bond lengths are 2.16 Å. Both Co(1)-B(4) bond lengths are 2.22 Å. There are two shorter (2.25 Å) and two longer (2.26 Å) Co(1)-B(2) bond lengths. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to four equivalent Yb(1), two equivalent Co(1), one B(2), and two equivalent B(3) atoms. The B(1)-B(2) bond length is 1.72 Å. There is one shorter (1.81 Å) and one longer (1.85 Å) B(1)-B(3) bond length. In the second B site, B(2) is bonded in a 9-coordinate geometry to two equivalent Yb(1), four equivalent Co(1), one B(1), one B(2), and one B(4) atom. The B(2)-B(2) bond length is 1.68 Å. The B(2)-B(4) bond length is 1.71 Å. In the third B site, B(3) is bonded in a 9-coordinate geometry to four equivalent Yb(1), two equivalent Co(1), one B(4), and two equivalent B(1) atoms. The B(3)-B(4) bond length is 1.79 Å. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to four equivalent Yb(1), two equivalent Co(1), one B(2), one B(3), and one B(4) atom. The B(4)-B(4) bond length is 1.80 Å.