Yb2(Rh3B2)3 crystallizes in the hexagonal P6/mmm space group. Yb(1) is bonded in a 19-coordinate geometry to one Yb(1), six equivalent Rh(1), six equivalent Rh(2), and six equivalent B(2) atoms. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 6-coordinate geometry to two equivalent Yb(1), two equivalent B(1), and two equivalent B(2) atoms. In the second Rh site, Rh(2) is bonded in a distorted square co-planar geometry to four equivalent Yb(1) and four equivalent B(2) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded to six equivalent Rh(1) atoms to form distorted edge-sharing BRh6 pentagonal pyramids. In the second B site, B(2) is bonded in a 6-coordinate geometry to three equivalent Yb(1), three equivalent Rh(1), and three equivalent Rh(2) atoms.
Yb2(Rh3B2)3 crystallizes in the hexagonal P6/mmm space group. Yb(1) is bonded in a 19-coordinate geometry to one Yb(1), six equivalent Rh(1), six equivalent Rh(2), and six equivalent B(2) atoms. The Yb(1)-Yb(1) bond length is 3.47 Å. All Yb(1)-Rh(1) bond lengths are 3.03 Å. All Yb(1)-Rh(2) bond lengths are 3.31 Å. All Yb(1)-B(2) bond lengths are 3.26 Å. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 6-coordinate geometry to two equivalent Yb(1), two equivalent B(1), and two equivalent B(2) atoms. Both Rh(1)-B(1) bond lengths are 2.15 Å. Both Rh(1)-B(2) bond lengths are 2.16 Å. In the second Rh site, Rh(2) is bonded in a distorted square co-planar geometry to four equivalent Yb(1) and four equivalent B(2) atoms. All Rh(2)-B(2) bond lengths are 2.16 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded to six equivalent Rh(1) atoms to form distorted edge-sharing BRh6 pentagonal pyramids. In the second B site, B(2) is bonded in a 6-coordinate geometry to three equivalent Yb(1), three equivalent Rh(1), and three equivalent Rh(2) atoms.