Sr2Rh5B4 crystallizes in the orthorhombic Fmmm space group. Sr(1) is bonded in a 16-coordinate geometry to two equivalent Rh(1), four equivalent Rh(2), four equivalent Rh(3), and six equivalent B(1) atoms. There are three inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a distorted square co-planar geometry to four equivalent Sr(1) and four equivalent B(1) atoms. In the second Rh site, Rh(2) is bonded in a distorted square co-planar geometry to four equivalent Sr(1) and four equivalent B(1) atoms. In the third Rh site, Rh(3) is bonded in a 4-coordinate geometry to four equivalent Sr(1) and four equivalent B(1) atoms. B(1) is bonded in a 5-coordinate geometry to three equivalent Sr(1), one Rh(1), two equivalent Rh(2), and two equivalent Rh(3) atoms.
Sr2Rh5B4 crystallizes in the orthorhombic Fmmm space group. Sr(1) is bonded in a 16-coordinate geometry to two equivalent Rh(1), four equivalent Rh(2), four equivalent Rh(3), and six equivalent B(1) atoms. Both Sr(1)-Rh(1) bond lengths are 3.21 Å. All Sr(1)-Rh(2) bond lengths are 3.30 Å. All Sr(1)-Rh(3) bond lengths are 3.11 Å. There are two shorter (3.06 Å) and four longer (3.23 Å) Sr(1)-B(1) bond lengths. There are three inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a distorted square co-planar geometry to four equivalent Sr(1) and four equivalent B(1) atoms. All Rh(1)-B(1) bond lengths are 2.20 Å. In the second Rh site, Rh(2) is bonded in a distorted square co-planar geometry to four equivalent Sr(1) and four equivalent B(1) atoms. All Rh(2)-B(1) bond lengths are 2.18 Å. In the third Rh site, Rh(3) is bonded in a 4-coordinate geometry to four equivalent Sr(1) and four equivalent B(1) atoms. All Rh(3)-B(1) bond lengths are 2.13 Å. B(1) is bonded in a 5-coordinate geometry to three equivalent Sr(1), one Rh(1), two equivalent Rh(2), and two equivalent Rh(3) atoms.