Sc8Rh20B8As3 crystallizes in the monoclinic P2/m space group. There are four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 13-coordinate geometry to two equivalent Rh(11), two equivalent Rh(3), two equivalent Rh(4), two equivalent Rh(6), two equivalent Rh(8), one B(1), one B(3), and one B(4) atom. In the second Sc site, Sc(2) is bonded in a 13-coordinate geometry to two equivalent Rh(10), two equivalent Rh(3), two equivalent Rh(5), two equivalent Rh(7), two equivalent Rh(9), one B(2), one B(3), and one B(4) atom. In the third Sc site, Sc(3) is bonded in a 13-coordinate geometry to two equivalent Rh(1), two equivalent Rh(10), two equivalent Rh(4), two equivalent Rh(6), two equivalent Rh(8), one B(3), and two equivalent B(1) atoms. In the fourth Sc site, Sc(4) is bonded in a 13-coordinate geometry to two equivalent Rh(11), two equivalent Rh(2), two equivalent Rh(5), two equivalent Rh(7), two equivalent Rh(9), one B(4), and two equivalent B(2) atoms. There are eleven inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a distorted body-centered cubic geometry to four equivalent Sc(3) and four equivalent B(1) atoms. In the second Rh site, Rh(2) is bonded in a 8-coordinate geometry to four equivalent Sc(4) and four equivalent B(2) atoms. In the third Rh site, Rh(3) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Sc(2), two equivalent B(3), and two equivalent B(4) atoms. In the fourth Rh site, Rh(4) is bonded in a 2-coordinate geometry to two equivalent Sc(1), two equivalent Sc(3), and two equivalent B(3) atoms. In the fifth Rh site, Rh(5) is bonded in a 8-coordinate geometry to two equivalent Sc(2), two equivalent Sc(4), two equivalent B(4), and two equivalent As(1) atoms. In the sixth Rh site, Rh(6) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Sc(3), two equivalent B(1), and two equivalent As(2) atoms. In the seventh Rh site, Rh(7) is bonded in a 8-coordinate geometry to two equivalent Sc(2), two equivalent Sc(4), two equivalent B(2), and two equivalent As(2) atoms. In the eighth Rh site, Rh(8) is bonded in a 2-coordinate geometry to two equivalent Sc(1), two equivalent Sc(3), and two equivalent B(1) atoms. In the ninth Rh site, Rh(9) is bonded in a 8-coordinate geometry to two equivalent Sc(2), two equivalent Sc(4), two equivalent B(2), and two equivalent As(1) atoms. In the tenth Rh site, Rh(10) is bonded in a 8-coordinate geometry to two equivalent Sc(2), two equivalent Sc(3), two equivalent B(3), and two equivalent As(2) atoms. In the eleventh Rh site, Rh(11) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Sc(4), two equivalent B(4), and two equivalent As(2) atoms. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to one Sc(1), two equivalent Sc(3), two equivalent Rh(1), two equivalent Rh(6), and two equivalent Rh(8) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to one Sc(2), two equivalent Sc(4), two equivalent Rh(2), two equivalent Rh(7), and two equivalent Rh(9) atoms. In the third B site, B(3) is bonded in a 9-coordinate geometry to one Sc(1), one Sc(2), one Sc(3), two equivalent Rh(10), two equivalent Rh(3), and two equivalent Rh(4) atoms. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to one Sc(1), one Sc(2), one Sc(4), two equivalent Rh(11), two equivalent Rh(3), and two equivalent Rh(5) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a body-centered cubic geometry to four equivalent Rh(5) and four equivalent Rh(9) atoms. In the second As site, As(2) is bonded in a body-centered cubic geometry to two equivalent Rh(10), two equivalent Rh(11), two equivalent Rh(6), and two equivalent Rh(7) atoms.
Sc8Rh20B8As3 crystallizes in the monoclinic P2/m space group. There are four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 13-coordinate geometry to two equivalent Rh(11), two equivalent Rh(3), two equivalent Rh(4), two equivalent Rh(6), two equivalent Rh(8), one B(1), one B(3), and one B(4) atom. Both Sc(1)-Rh(11) bond lengths are 2.99 Å. Both Sc(1)-Rh(3) bond lengths are 2.76 Å. Both Sc(1)-Rh(4) bond lengths are 2.92 Å. Both Sc(1)-Rh(6) bond lengths are 2.83 Å. Both Sc(1)-Rh(8) bond lengths are 2.84 Å. The Sc(1)-B(1) bond length is 2.57 Å. The Sc(1)-B(3) bond length is 2.68 Å. The Sc(1)-B(4) bond length is 2.78 Å. In the second Sc site, Sc(2) is bonded in a 13-coordinate geometry to two equivalent Rh(10), two equivalent Rh(3), two equivalent Rh(5), two equivalent Rh(7), two equivalent Rh(9), one B(2), one B(3), and one B(4) atom. Both Sc(2)-Rh(10) bond lengths are 2.92 Å. Both Sc(2)-Rh(3) bond lengths are 2.76 Å. Both Sc(2)-Rh(5) bond lengths are 2.96 Å. Both Sc(2)-Rh(7) bond lengths are 2.85 Å. Both Sc(2)-Rh(9) bond lengths are 2.88 Å. The Sc(2)-B(2) bond length is 2.67 Å. The Sc(2)-B(3) bond length is 2.90 Å. The Sc(2)-B(4) bond length is 2.77 Å. In the third Sc site, Sc(3) is bonded in a 13-coordinate geometry to two equivalent Rh(1), two equivalent Rh(10), two equivalent Rh(4), two equivalent Rh(6), two equivalent Rh(8), one B(3), and two equivalent B(1) atoms. Both Sc(3)-Rh(1) bond lengths are 2.75 Å. Both Sc(3)-Rh(10) bond lengths are 2.84 Å. Both Sc(3)-Rh(4) bond lengths are 2.87 Å. Both Sc(3)-Rh(6) bond lengths are 2.97 Å. Both Sc(3)-Rh(8) bond lengths are 2.93 Å. The Sc(3)-B(3) bond length is 2.58 Å. There is one shorter (2.65 Å) and one longer (2.94 Å) Sc(3)-B(1) bond length. In the fourth Sc site, Sc(4) is bonded in a 13-coordinate geometry to two equivalent Rh(11), two equivalent Rh(2), two equivalent Rh(5), two equivalent Rh(7), two equivalent Rh(9), one B(4), and two equivalent B(2) atoms. Both Sc(4)-Rh(11) bond lengths are 2.83 Å. Both Sc(4)-Rh(2) bond lengths are 2.77 Å. Both Sc(4)-Rh(5) bond lengths are 2.85 Å. Both Sc(4)-Rh(7) bond lengths are 2.95 Å. Both Sc(4)-Rh(9) bond lengths are 2.96 Å. The Sc(4)-B(4) bond length is 2.66 Å. There is one shorter (2.78 Å) and one longer (2.80 Å) Sc(4)-B(2) bond length. There are eleven inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a distorted body-centered cubic geometry to four equivalent Sc(3) and four equivalent B(1) atoms. All Rh(1)-B(1) bond lengths are 2.29 Å. In the second Rh site, Rh(2) is bonded in a 8-coordinate geometry to four equivalent Sc(4) and four equivalent B(2) atoms. All Rh(2)-B(2) bond lengths are 2.26 Å. In the third Rh site, Rh(3) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Sc(2), two equivalent B(3), and two equivalent B(4) atoms. Both Rh(3)-B(3) bond lengths are 2.30 Å. Both Rh(3)-B(4) bond lengths are 2.24 Å. In the fourth Rh site, Rh(4) is bonded in a 2-coordinate geometry to two equivalent Sc(1), two equivalent Sc(3), and two equivalent B(3) atoms. Both Rh(4)-B(3) bond lengths are 2.16 Å. In the fifth Rh site, Rh(5) is bonded in a 8-coordinate geometry to two equivalent Sc(2), two equivalent Sc(4), two equivalent B(4), and two equivalent As(1) atoms. Both Rh(5)-B(4) bond lengths are 2.24 Å. Both Rh(5)-As(1) bond lengths are 2.62 Å. In the sixth Rh site, Rh(6) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Sc(3), two equivalent B(1), and two equivalent As(2) atoms. Both Rh(6)-B(1) bond lengths are 2.29 Å. Both Rh(6)-As(2) bond lengths are 2.60 Å. In the seventh Rh site, Rh(7) is bonded in a 8-coordinate geometry to two equivalent Sc(2), two equivalent Sc(4), two equivalent B(2), and two equivalent As(2) atoms. Both Rh(7)-B(2) bond lengths are 2.21 Å. Both Rh(7)-As(2) bond lengths are 2.66 Å. In the eighth Rh site, Rh(8) is bonded in a 2-coordinate geometry to two equivalent Sc(1), two equivalent Sc(3), and two equivalent B(1) atoms. Both Rh(8)-B(1) bond lengths are 2.16 Å. In the ninth Rh site, Rh(9) is bonded in a 8-coordinate geometry to two equivalent Sc(2), two equivalent Sc(4), two equivalent B(2), and two equivalent As(1) atoms. Both Rh(9)-B(2) bond lengths are 2.22 Å. Both Rh(9)-As(1) bond lengths are 2.63 Å. In the tenth Rh site, Rh(10) is bonded in a 8-coordinate geometry to two equivalent Sc(2), two equivalent Sc(3), two equivalent B(3), and two equivalent As(2) atoms. Both Rh(10)-B(3) bond lengths are 2.28 Å. Both Rh(10)-As(2) bond lengths are 2.62 Å. In the eleventh Rh site, Rh(11) is bonded in a 8-coordinate geometry to two equivalent Sc(1), two equivalent Sc(4), two equivalent B(4), and two equivalent As(2) atoms. Both Rh(11)-B(4) bond lengths are 2.22 Å. Both Rh(11)-As(2) bond lengths are 2.64 Å. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to one Sc(1), two equivalent Sc(3), two equivalent Rh(1), two equivalent Rh(6), and two equivalent Rh(8) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to one Sc(2), two equivalent Sc(4), two equivalent Rh(2), two equivalent Rh(7), and two equivalent Rh(9) atoms. In the third B site, B(3) is bonded in a 9-coordinate geometry to one Sc(1), one Sc(2), one Sc(3), two equivalent Rh(10), two equivalent Rh(3), and two equivalent Rh(4) atoms. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to one Sc(1), one Sc(2), one Sc(4), two equivalent Rh(11), two equivalent Rh(3), and two equivalent Rh(5) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a body-centered cubic geometry to four equivalent Rh(5) and four equivalent Rh(9) atoms. In the second As site, As(2) is bonded in a body-centered cubic geometry to two equivalent Rh(10), two equivalent Rh(11), two equivalent Rh(6), and two equivalent Rh(7) atoms.