YbRhB4 crystallizes in the orthorhombic Pbam space group. Yb(1) is bonded in a 18-coordinate geometry to four equivalent Rh(1), two equivalent B(4), four equivalent B(1), four equivalent B(2), and four equivalent B(3) atoms. Rh(1) is bonded in a 15-coordinate geometry to four equivalent Yb(1), one Rh(1), two equivalent B(1), two equivalent B(2), two equivalent B(3), and four equivalent B(4) 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 Rh(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 four equivalent Yb(1), two equivalent Rh(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 Rh(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 two equivalent Yb(1), four equivalent Rh(1), one B(2), one B(3), and one B(4) atom.
YbRhB4 crystallizes in the orthorhombic Pbam space group. Yb(1) is bonded in a 18-coordinate geometry to four equivalent Rh(1), two equivalent B(4), four equivalent B(1), four equivalent B(2), and four equivalent B(3) atoms. There are a spread of Yb(1)-Rh(1) bond distances ranging from 2.96-3.11 Å. Both Yb(1)-B(4) bond lengths are 2.62 Å. There are two shorter (2.72 Å) and two longer (2.76 Å) Yb(1)-B(1) bond lengths. There are two shorter (2.72 Å) and two longer (2.75 Å) Yb(1)-B(2) bond lengths. There are two shorter (2.70 Å) and two longer (2.75 Å) Yb(1)-B(3) bond lengths. Rh(1) is bonded in a 15-coordinate geometry to four equivalent Yb(1), one Rh(1), two equivalent B(1), two equivalent B(2), two equivalent B(3), and four equivalent B(4) atoms. The Rh(1)-Rh(1) bond length is 2.73 Å. Both Rh(1)-B(1) bond lengths are 2.24 Å. Both Rh(1)-B(2) bond lengths are 2.32 Å. Both Rh(1)-B(3) bond lengths are 2.32 Å. There are two shorter (2.39 Å) and two longer (2.40 Å) Rh(1)-B(4) 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 Rh(1), one B(2), and two equivalent B(3) atoms. The B(1)-B(2) bond length is 1.84 Å. There is one shorter (1.79 Å) and one longer (1.87 Å) B(1)-B(3) bond length. In the second B site, B(2) is bonded in a 9-coordinate geometry to four equivalent Yb(1), two equivalent Rh(1), one B(1), one B(2), and one B(4) atom. The B(2)-B(2) bond length is 1.76 Å. The B(2)-B(4) bond length is 1.74 Å. In the third B site, B(3) is bonded in a 9-coordinate geometry to four equivalent Yb(1), two equivalent Rh(1), one B(4), and two equivalent B(1) atoms. The B(3)-B(4) bond length is 1.75 Å. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to two equivalent Yb(1), four equivalent Rh(1), one B(2), one B(3), and one B(4) atom. The B(4)-B(4) bond length is 1.72 Å.