Nd5Rh8Sn15 crystallizes in the monoclinic Pm space group. There are five inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 13-coordinate geometry to two equivalent Rh(1), two equivalent Rh(5), one Sn(12), one Sn(4), one Sn(7), two equivalent Sn(1), two equivalent Sn(5), and two equivalent Sn(9) atoms. In the second Nd site, Nd(2) is bonded in a 6-coordinate geometry to one Sn(8), two equivalent Sn(10), two equivalent Sn(2), and two equivalent Sn(6) atoms. In the third Nd site, Nd(3) is bonded in a 6-coordinate geometry to two equivalent Rh(3), two equivalent Sn(11), two equivalent Sn(3), and two equivalent Sn(7) atoms. In the fourth Nd site, Nd(4) is bonded in a 6-coordinate geometry to two equivalent Rh(8), one Sn(6), two equivalent Sn(12), two equivalent Sn(4), and two equivalent Sn(8) atoms. In the fifth Nd site, Nd(5) is bonded in a 4-coordinate geometry to one Rh(3), one Rh(8), two equivalent Rh(1), and one Sn(7) atom. There are eight inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 7-coordinate geometry to two equivalent Nd(1), two equivalent Nd(5), one Sn(14), one Sn(5), one Sn(9), and two equivalent Sn(7) atoms. In the second Rh site, Rh(2) is bonded in a 7-coordinate geometry to one Sn(10), one Sn(15), one Sn(6), two equivalent Sn(13), and two equivalent Sn(8) atoms. In the third Rh site, Rh(3) is bonded in a 9-coordinate geometry to one Nd(5), two equivalent Nd(3), one Sn(11), one Sn(7), two equivalent Sn(14), and two equivalent Sn(5) atoms. In the fourth Rh site, Rh(4) is bonded in a 7-coordinate geometry to one Sn(12), one Sn(13), one Sn(8), two equivalent Sn(15), and two equivalent Sn(6) atoms. In the fifth Rh site, Rh(5) is bonded in a 7-coordinate geometry to two equivalent Nd(1), one Sn(1), one Sn(15), one Sn(9), two equivalent Sn(12), and two equivalent Sn(4) atoms. In the sixth Rh site, Rh(6) is bonded in a 7-coordinate geometry to one Sn(10), one Sn(14), one Sn(2), two equivalent Sn(11), and two equivalent Sn(3) atoms. In the seventh Rh site, Rh(7) is bonded in a 7-coordinate geometry to one Sn(11), one Sn(13), one Sn(3), two equivalent Sn(10), and two equivalent Sn(2) atoms. In the eighth Rh site, Rh(8) is bonded in a 9-coordinate geometry to one Nd(5), two equivalent Nd(4), one Sn(12), one Sn(4), two equivalent Sn(1), and two equivalent Sn(9) atoms. There are fifteen inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 5-coordinate geometry to two equivalent Nd(1), one Rh(5), and two equivalent Rh(8) atoms. In the second Sn site, Sn(2) is bonded in a 5-coordinate geometry to two equivalent Nd(2), one Rh(6), two equivalent Rh(7), and one Sn(6) atom. In the third Sn site, Sn(3) is bonded in a 5-coordinate geometry to two equivalent Nd(3), one Rh(7), and two equivalent Rh(6) atoms. In the fourth Sn site, Sn(4) is bonded in a 5-coordinate geometry to one Nd(1), two equivalent Nd(4), one Rh(8), two equivalent Rh(5), and one Sn(8) atom. In the fifth Sn site, Sn(5) is bonded in a 5-coordinate geometry to two equivalent Nd(1), one Rh(1), and two equivalent Rh(3) atoms. In the sixth Sn site, Sn(6) is bonded in a 10-coordinate geometry to one Nd(4), two equivalent Nd(2), one Rh(2), two equivalent Rh(4), one Sn(15), one Sn(2), and two equivalent Sn(8) atoms. In the seventh Sn site, Sn(7) is bonded in a 7-coordinate geometry to one Nd(1), one Nd(5), two equivalent Nd(3), one Rh(3), and two equivalent Rh(1) atoms. In the eighth Sn site, Sn(8) is bonded in a 10-coordinate geometry to one Nd(2), two equivalent Nd(4), one Rh(4), two equivalent Rh(2), one Sn(13), one Sn(4), and two equivalent Sn(6) atoms. In the ninth Sn site, Sn(9) is bonded in a 6-coordinate geometry to two equivalent Nd(1), one Rh(1), one Rh(5), and two equivalent Rh(8) atoms. In the tenth Sn site, Sn(10) is bonded in a 6-coordinate geometry to two equivalent Nd(2), one Rh(2), one Rh(6), and two equivalent Rh(7) atoms. In the eleventh Sn site, Sn(11) is bonded in a 6-coordinate geometry to two equivalent Nd(3), one Rh(3), one Rh(7), and two equivalent Rh(6) atoms. In the twelfth Sn site, Sn(12) is bonded in a 6-coordinate geometry to one Nd(1), two equivalent Nd(4), one Rh(4), one Rh(8), and two equivalent Rh(5) atoms. In the thirteenth Sn site, Sn(13) is bonded to one Rh(4), one Rh(7), two equivalent Rh(2), and one Sn(8) atom to form a mixture of distorted edge and corner-sharing SnSnRh4 tetrahedra. In the fourteenth Sn site, Sn(14) is bonded in a 4-coordinate geometry to one Rh(1), one Rh(6), and two equivalent Rh(3) atoms. In the fifteenth Sn site, Sn(15) is bonded to one Rh(2), one Rh(5), two equivalent Rh(4), and one Sn(6) atom to form a mixture of distorted edge and corner-sharing SnSnRh4 tetrahedra.
Nd5Rh8Sn15 crystallizes in the monoclinic Pm space group. There are five inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 13-coordinate geometry to two equivalent Rh(1), two equivalent Rh(5), one Sn(12), one Sn(4), one Sn(7), two equivalent Sn(1), two equivalent Sn(5), and two equivalent Sn(9) atoms. Both Nd(1)-Rh(1) bond lengths are 3.44 Å. Both Nd(1)-Rh(5) bond lengths are 3.48 Å. The Nd(1)-Sn(12) bond length is 3.64 Å. The Nd(1)-Sn(4) bond length is 3.42 Å. The Nd(1)-Sn(7) bond length is 3.39 Å. Both Nd(1)-Sn(1) bond lengths are 3.20 Å. Both Nd(1)-Sn(5) bond lengths are 3.26 Å. Both Nd(1)-Sn(9) bond lengths are 3.22 Å. In the second Nd site, Nd(2) is bonded in a 6-coordinate geometry to one Sn(8), two equivalent Sn(10), two equivalent Sn(2), and two equivalent Sn(6) atoms. The Nd(2)-Sn(8) bond length is 3.37 Å. Both Nd(2)-Sn(10) bond lengths are 3.22 Å. Both Nd(2)-Sn(2) bond lengths are 3.19 Å. Both Nd(2)-Sn(6) bond lengths are 3.19 Å. In the third Nd site, Nd(3) is bonded in a 6-coordinate geometry to two equivalent Rh(3), two equivalent Sn(11), two equivalent Sn(3), and two equivalent Sn(7) atoms. Both Nd(3)-Rh(3) bond lengths are 3.35 Å. Both Nd(3)-Sn(11) bond lengths are 3.24 Å. Both Nd(3)-Sn(3) bond lengths are 3.17 Å. Both Nd(3)-Sn(7) bond lengths are 3.20 Å. In the fourth Nd site, Nd(4) is bonded in a 6-coordinate geometry to two equivalent Rh(8), one Sn(6), two equivalent Sn(12), two equivalent Sn(4), and two equivalent Sn(8) atoms. Both Nd(4)-Rh(8) bond lengths are 3.35 Å. The Nd(4)-Sn(6) bond length is 3.36 Å. Both Nd(4)-Sn(12) bond lengths are 3.24 Å. Both Nd(4)-Sn(4) bond lengths are 3.19 Å. Both Nd(4)-Sn(8) bond lengths are 3.18 Å. In the fifth Nd site, Nd(5) is bonded in a 4-coordinate geometry to one Rh(3), one Rh(8), two equivalent Rh(1), and one Sn(7) atom. The Nd(5)-Rh(3) bond length is 2.91 Å. The Nd(5)-Rh(8) bond length is 2.94 Å. Both Nd(5)-Rh(1) bond lengths are 3.02 Å. The Nd(5)-Sn(7) bond length is 3.25 Å. There are eight inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 7-coordinate geometry to two equivalent Nd(1), two equivalent Nd(5), one Sn(14), one Sn(5), one Sn(9), and two equivalent Sn(7) atoms. The Rh(1)-Sn(14) bond length is 2.83 Å. The Rh(1)-Sn(5) bond length is 2.74 Å. The Rh(1)-Sn(9) bond length is 2.79 Å. Both Rh(1)-Sn(7) bond lengths are 2.66 Å. In the second Rh site, Rh(2) is bonded in a 7-coordinate geometry to one Sn(10), one Sn(15), one Sn(6), two equivalent Sn(13), and two equivalent Sn(8) atoms. The Rh(2)-Sn(10) bond length is 2.76 Å. The Rh(2)-Sn(15) bond length is 2.73 Å. The Rh(2)-Sn(6) bond length is 2.80 Å. Both Rh(2)-Sn(13) bond lengths are 2.83 Å. Both Rh(2)-Sn(8) bond lengths are 2.70 Å. In the third Rh site, Rh(3) is bonded in a 9-coordinate geometry to one Nd(5), two equivalent Nd(3), one Sn(11), one Sn(7), two equivalent Sn(14), and two equivalent Sn(5) atoms. The Rh(3)-Sn(11) bond length is 2.66 Å. The Rh(3)-Sn(7) bond length is 2.70 Å. Both Rh(3)-Sn(14) bond lengths are 2.91 Å. Both Rh(3)-Sn(5) bond lengths are 2.73 Å. In the fourth Rh site, Rh(4) is bonded in a 7-coordinate geometry to one Sn(12), one Sn(13), one Sn(8), two equivalent Sn(15), and two equivalent Sn(6) atoms. The Rh(4)-Sn(12) bond length is 2.75 Å. The Rh(4)-Sn(13) bond length is 2.70 Å. The Rh(4)-Sn(8) bond length is 2.80 Å. Both Rh(4)-Sn(15) bond lengths are 2.85 Å. Both Rh(4)-Sn(6) bond lengths are 2.70 Å. In the fifth Rh site, Rh(5) is bonded in a 7-coordinate geometry to two equivalent Nd(1), one Sn(1), one Sn(15), one Sn(9), two equivalent Sn(12), and two equivalent Sn(4) atoms. The Rh(5)-Sn(1) bond length is 2.74 Å. The Rh(5)-Sn(15) bond length is 2.76 Å. The Rh(5)-Sn(9) bond length is 2.86 Å. Both Rh(5)-Sn(12) bond lengths are 2.80 Å. Both Rh(5)-Sn(4) bond lengths are 2.70 Å. In the sixth Rh site, Rh(6) is bonded in a 7-coordinate geometry to one Sn(10), one Sn(14), one Sn(2), two equivalent Sn(11), and two equivalent Sn(3) atoms. The Rh(6)-Sn(10) bond length is 2.85 Å. The Rh(6)-Sn(14) bond length is 2.75 Å. The Rh(6)-Sn(2) bond length is 2.75 Å. Both Rh(6)-Sn(11) bond lengths are 2.77 Å. Both Rh(6)-Sn(3) bond lengths are 2.73 Å. In the seventh Rh site, Rh(7) is bonded in a 7-coordinate geometry to one Sn(11), one Sn(13), one Sn(3), two equivalent Sn(10), and two equivalent Sn(2) atoms. The Rh(7)-Sn(11) bond length is 2.89 Å. The Rh(7)-Sn(13) bond length is 2.69 Å. The Rh(7)-Sn(3) bond length is 2.75 Å. Both Rh(7)-Sn(10) bond lengths are 2.77 Å. Both Rh(7)-Sn(2) bond lengths are 2.71 Å. In the eighth Rh site, Rh(8) is bonded in a 9-coordinate geometry to one Nd(5), two equivalent Nd(4), one Sn(12), one Sn(4), two equivalent Sn(1), and two equivalent Sn(9) atoms. The Rh(8)-Sn(12) bond length is 2.73 Å. The Rh(8)-Sn(4) bond length is 2.66 Å. Both Rh(8)-Sn(1) bond lengths are 2.73 Å. Both Rh(8)-Sn(9) bond lengths are 2.86 Å. There are fifteen inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 5-coordinate geometry to two equivalent Nd(1), one Rh(5), and two equivalent Rh(8) atoms. In the second Sn site, Sn(2) is bonded in a 5-coordinate geometry to two equivalent Nd(2), one Rh(6), two equivalent Rh(7), and one Sn(6) atom. The Sn(2)-Sn(6) bond length is 3.22 Å. In the third Sn site, Sn(3) is bonded in a 5-coordinate geometry to two equivalent Nd(3), one Rh(7), and two equivalent Rh(6) atoms. In the fourth Sn site, Sn(4) is bonded in a 5-coordinate geometry to one Nd(1), two equivalent Nd(4), one Rh(8), two equivalent Rh(5), and one Sn(8) atom. The Sn(4)-Sn(8) bond length is 3.24 Å. In the fifth Sn site, Sn(5) is bonded in a 5-coordinate geometry to two equivalent Nd(1), one Rh(1), and two equivalent Rh(3) atoms. In the sixth Sn site, Sn(6) is bonded in a 10-coordinate geometry to one Nd(4), two equivalent Nd(2), one Rh(2), two equivalent Rh(4), one Sn(15), one Sn(2), and two equivalent Sn(8) atoms. The Sn(6)-Sn(15) bond length is 3.15 Å. Both Sn(6)-Sn(8) bond lengths are 3.17 Å. In the seventh Sn site, Sn(7) is bonded in a 7-coordinate geometry to one Nd(1), one Nd(5), two equivalent Nd(3), one Rh(3), and two equivalent Rh(1) atoms. In the eighth Sn site, Sn(8) is bonded in a 10-coordinate geometry to one Nd(2), two equivalent Nd(4), one Rh(4), two equivalent Rh(2), one Sn(13), one Sn(4), and two equivalent Sn(6) atoms. The Sn(8)-Sn(13) bond length is 3.11 Å. In the ninth Sn site, Sn(9) is bonded in a 6-coordinate geometry to two equivalent Nd(1), one Rh(1), one Rh(5), and two equivalent Rh(8) atoms. In the tenth Sn site, Sn(10) is bonded in a 6-coordinate geometry to two equivalent Nd(2), one Rh(2), one Rh(6), and two equivalent Rh(7) atoms. In the eleventh Sn site, Sn(11) is bonded in a 6-coordinate geometry to two equivalent Nd(3), one Rh(3), one Rh(7), and two equivalent Rh(6) atoms. In the twelfth Sn site, Sn(12) is bonded in a 6-coordinate geometry to one Nd(1), two equivalent Nd(4), one Rh(4), one Rh(8), and two equivalent Rh(5) atoms. In the thirteenth Sn site, Sn(13) is bonded to one Rh(4), one Rh(7), two equivalent Rh(2), and one Sn(8) atom to form a mixture of distorted edge and corner-sharing SnSnRh4 tetrahedra. In the fourteenth Sn site, Sn(14) is bonded in a 4-coordinate geometry to one Rh(1), one Rh(6), and two equivalent Rh(3) atoms. In the fifteenth Sn site, Sn(15) is bonded to one Rh(2), one Rh(5), two equivalent Rh(4), and one Sn(6) atom to form a mixture of distorted edge and corner-sharing SnSnRh4 tetrahedra.