Tb24Fe3CoBi8 crystallizes in the monoclinic Pm space group. There are twenty-four inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 4-coordinate geometry to two equivalent Fe(1), one Bi(1), and one Bi(5) atom. In the second Tb site, Tb(2) is bonded in a 4-coordinate geometry to two equivalent Fe(2), one Bi(2), and one Bi(6) atom. In the third Tb site, Tb(3) is bonded in a 4-coordinate geometry to two equivalent Fe(3), one Bi(3), and one Bi(7) atom. In the fourth Tb site, Tb(4) is bonded in a 4-coordinate geometry to two equivalent Co(1), one Bi(4), and one Bi(8) atom. In the fifth Tb site, Tb(5) is bonded in a 5-coordinate geometry to one Fe(1), two equivalent Bi(1), and two equivalent Bi(6) atoms. In the sixth Tb site, Tb(6) is bonded in a 5-coordinate geometry to one Fe(2), two equivalent Bi(2), and two equivalent Bi(7) atoms. In the seventh Tb site, Tb(7) is bonded in a 5-coordinate geometry to one Fe(3), two equivalent Bi(3), and two equivalent Bi(8) atoms. In the eighth Tb site, Tb(8) is bonded in a 5-coordinate geometry to one Co(1), two equivalent Bi(4), and two equivalent Bi(5) atoms. In the ninth Tb site, Tb(9) is bonded in a 5-coordinate geometry to one Fe(1), two equivalent Bi(1), and two equivalent Bi(5) atoms. In the tenth Tb site, Tb(10) is bonded in a 5-coordinate geometry to one Fe(2), two equivalent Bi(2), and two equivalent Bi(6) atoms. In the eleventh Tb site, Tb(11) is bonded in a 5-coordinate geometry to one Fe(3), two equivalent Bi(3), and two equivalent Bi(7) atoms. In the twelfth Tb site, Tb(12) is bonded in a 5-coordinate geometry to one Co(1), two equivalent Bi(4), and two equivalent Bi(8) atoms. In the thirteenth Tb site, Tb(13) is bonded in a 5-coordinate geometry to one Co(1), two equivalent Bi(1), and two equivalent Bi(5) atoms. In the fourteenth Tb site, Tb(14) is bonded in a 5-coordinate geometry to one Fe(1), two equivalent Bi(2), and two equivalent Bi(6) atoms. In the fifteenth Tb site, Tb(15) is bonded in a 5-coordinate geometry to one Fe(2), two equivalent Bi(3), and two equivalent Bi(7) atoms. In the sixteenth Tb site, Tb(16) is bonded in a 5-coordinate geometry to one Fe(3), two equivalent Bi(4), and two equivalent Bi(8) atoms. In the seventeenth Tb site, Tb(17) is bonded in a 4-coordinate geometry to two equivalent Co(1), one Bi(4), and one Bi(5) atom. In the eighteenth Tb site, Tb(18) is bonded in a 4-coordinate geometry to two equivalent Fe(1), one Bi(1), and one Bi(6) atom. In the nineteenth Tb site, Tb(19) is bonded in a 4-coordinate geometry to two equivalent Fe(2), one Bi(2), and one Bi(7) atom. In the twentieth Tb site, Tb(20) is bonded in a 4-coordinate geometry to two equivalent Fe(3), one Bi(3), and one Bi(8) atom. In the twenty-first Tb site, Tb(21) is bonded in a 4-coordinate geometry to two equivalent Co(1), one Bi(1), and one Bi(5) atom. In the twenty-second Tb site, Tb(22) is bonded in a 4-coordinate geometry to two equivalent Fe(1), one Bi(2), and one Bi(6) atom. In the twenty-third Tb site, Tb(23) is bonded in a 4-coordinate geometry to two equivalent Fe(2), one Bi(3), and one Bi(7) atom. In the twenty-fourth Tb site, Tb(24) is bonded in a 4-coordinate geometry to two equivalent Fe(3), one Bi(4), and one Bi(8) atom. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 9-coordinate geometry to one Tb(14), one Tb(5), one Tb(9), two equivalent Tb(1), two equivalent Tb(18), and two equivalent Tb(22) atoms. In the second Fe site, Fe(2) is bonded in a 9-coordinate geometry to one Tb(10), one Tb(15), one Tb(6), two equivalent Tb(19), two equivalent Tb(2), and two equivalent Tb(23) atoms. In the third Fe site, Fe(3) is bonded in a 9-coordinate geometry to one Tb(11), one Tb(16), one Tb(7), two equivalent Tb(20), two equivalent Tb(24), and two equivalent Tb(3) atoms. Co(1) is bonded in a 9-coordinate geometry to one Tb(12), one Tb(13), one Tb(8), two equivalent Tb(17), two equivalent Tb(21), and two equivalent Tb(4) atoms. There are eight inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 9-coordinate geometry to one Tb(1), one Tb(18), one Tb(21), two equivalent Tb(13), two equivalent Tb(5), and two equivalent Tb(9) atoms. In the second Bi site, Bi(2) is bonded in a 9-coordinate geometry to one Tb(19), one Tb(2), one Tb(22), two equivalent Tb(10), two equivalent Tb(14), and two equivalent Tb(6) atoms. In the third Bi site, Bi(3) is bonded in a 9-coordinate geometry to one Tb(20), one Tb(23), one Tb(3), two equivalent Tb(11), two equivalent Tb(15), and two equivalent Tb(7) atoms. In the fourth Bi site, Bi(4) is bonded in a 9-coordinate geometry to one Tb(17), one Tb(24), one Tb(4), two equivalent Tb(12), two equivalent Tb(16), and two equivalent Tb(8) atoms. In the fifth Bi site, Bi(5) is bonded in a 9-coordinate geometry to one Tb(1), one Tb(17), one Tb(21), two equivalent Tb(13), two equivalent Tb(8), and two equivalent Tb(9) atoms. In the sixth Bi site, Bi(6) is bonded in a 9-coordinate geometry to one Tb(18), one Tb(2), one Tb(22), two equivalent Tb(10), two equivalent Tb(14), and two equivalent Tb(5) atoms. In the seventh Bi site, Bi(7) is bonded in a 9-coordinate geometry to one Tb(19), one Tb(23), one Tb(3), two equivalent Tb(11), two equivalent Tb(15), and two equivalent Tb(6) atoms. In the eighth Bi site, Bi(8) is bonded in a 9-coordinate geometry to one Tb(20), one Tb(24), one Tb(4), two equivalent Tb(12), two equivalent Tb(16), and two equivalent Tb(7) atoms.
Tb24Fe3CoBi8 crystallizes in the monoclinic Pm space group. There are twenty-four inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 4-coordinate geometry to two equivalent Fe(1), one Bi(1), and one Bi(5) atom. Both Tb(1)-Fe(1) bond lengths are 2.82 Å. The Tb(1)-Bi(1) bond length is 3.31 Å. The Tb(1)-Bi(5) bond length is 3.31 Å. In the second Tb site, Tb(2) is bonded in a 4-coordinate geometry to two equivalent Fe(2), one Bi(2), and one Bi(6) atom. Both Tb(2)-Fe(2) bond lengths are 2.82 Å. The Tb(2)-Bi(2) bond length is 3.31 Å. The Tb(2)-Bi(6) bond length is 3.31 Å. In the third Tb site, Tb(3) is bonded in a 4-coordinate geometry to two equivalent Fe(3), one Bi(3), and one Bi(7) atom. Both Tb(3)-Fe(3) bond lengths are 2.82 Å. The Tb(3)-Bi(3) bond length is 3.30 Å. The Tb(3)-Bi(7) bond length is 3.31 Å. In the fourth Tb site, Tb(4) is bonded in a 4-coordinate geometry to two equivalent Co(1), one Bi(4), and one Bi(8) atom. Both Tb(4)-Co(1) bond lengths are 2.79 Å. The Tb(4)-Bi(4) bond length is 3.32 Å. The Tb(4)-Bi(8) bond length is 3.32 Å. In the fifth Tb site, Tb(5) is bonded in a 5-coordinate geometry to one Fe(1), two equivalent Bi(1), and two equivalent Bi(6) atoms. The Tb(5)-Fe(1) bond length is 3.20 Å. Both Tb(5)-Bi(1) bond lengths are 3.33 Å. Both Tb(5)-Bi(6) bond lengths are 3.32 Å. In the sixth Tb site, Tb(6) is bonded in a 5-coordinate geometry to one Fe(2), two equivalent Bi(2), and two equivalent Bi(7) atoms. The Tb(6)-Fe(2) bond length is 3.21 Å. Both Tb(6)-Bi(2) bond lengths are 3.33 Å. Both Tb(6)-Bi(7) bond lengths are 3.33 Å. In the seventh Tb site, Tb(7) is bonded in a 5-coordinate geometry to one Fe(3), two equivalent Bi(3), and two equivalent Bi(8) atoms. The Tb(7)-Fe(3) bond length is 3.21 Å. Both Tb(7)-Bi(3) bond lengths are 3.33 Å. Both Tb(7)-Bi(8) bond lengths are 3.33 Å. In the eighth Tb site, Tb(8) is bonded in a 5-coordinate geometry to one Co(1), two equivalent Bi(4), and two equivalent Bi(5) atoms. The Tb(8)-Co(1) bond length is 3.22 Å. Both Tb(8)-Bi(4) bond lengths are 3.32 Å. Both Tb(8)-Bi(5) bond lengths are 3.33 Å. In the ninth Tb site, Tb(9) is bonded in a 5-coordinate geometry to one Fe(1), two equivalent Bi(1), and two equivalent Bi(5) atoms. The Tb(9)-Fe(1) bond length is 3.30 Å. Both Tb(9)-Bi(1) bond lengths are 3.31 Å. Both Tb(9)-Bi(5) bond lengths are 3.34 Å. In the tenth Tb site, Tb(10) is bonded in a 5-coordinate geometry to one Fe(2), two equivalent Bi(2), and two equivalent Bi(6) atoms. The Tb(10)-Fe(2) bond length is 3.28 Å. Both Tb(10)-Bi(2) bond lengths are 3.31 Å. Both Tb(10)-Bi(6) bond lengths are 3.35 Å. In the eleventh Tb site, Tb(11) is bonded in a 5-coordinate geometry to one Fe(3), two equivalent Bi(3), and two equivalent Bi(7) atoms. The Tb(11)-Fe(3) bond length is 3.30 Å. Both Tb(11)-Bi(3) bond lengths are 3.31 Å. Both Tb(11)-Bi(7) bond lengths are 3.34 Å. In the twelfth Tb site, Tb(12) is bonded in a 5-coordinate geometry to one Co(1), two equivalent Bi(4), and two equivalent Bi(8) atoms. The Tb(12)-Co(1) bond length is 3.26 Å. Both Tb(12)-Bi(4) bond lengths are 3.32 Å. Both Tb(12)-Bi(8) bond lengths are 3.34 Å. In the thirteenth Tb site, Tb(13) is bonded in a 5-coordinate geometry to one Co(1), two equivalent Bi(1), and two equivalent Bi(5) atoms. The Tb(13)-Co(1) bond length is 3.54 Å. Both Tb(13)-Bi(1) bond lengths are 3.32 Å. Both Tb(13)-Bi(5) bond lengths are 3.32 Å. In the fourteenth Tb site, Tb(14) is bonded in a 5-coordinate geometry to one Fe(1), two equivalent Bi(2), and two equivalent Bi(6) atoms. The Tb(14)-Fe(1) bond length is 3.47 Å. Both Tb(14)-Bi(2) bond lengths are 3.32 Å. Both Tb(14)-Bi(6) bond lengths are 3.32 Å. In the fifteenth Tb site, Tb(15) is bonded in a 5-coordinate geometry to one Fe(2), two equivalent Bi(3), and two equivalent Bi(7) atoms. The Tb(15)-Fe(2) bond length is 3.47 Å. Both Tb(15)-Bi(3) bond lengths are 3.33 Å. Both Tb(15)-Bi(7) bond lengths are 3.32 Å. In the sixteenth Tb site, Tb(16) is bonded in a 5-coordinate geometry to one Fe(3), two equivalent Bi(4), and two equivalent Bi(8) atoms. The Tb(16)-Fe(3) bond length is 3.45 Å. Both Tb(16)-Bi(4) bond lengths are 3.33 Å. Both Tb(16)-Bi(8) bond lengths are 3.32 Å. In the seventeenth Tb site, Tb(17) is bonded in a 4-coordinate geometry to two equivalent Co(1), one Bi(4), and one Bi(5) atom. Both Tb(17)-Co(1) bond lengths are 2.87 Å. The Tb(17)-Bi(4) bond length is 3.36 Å. The Tb(17)-Bi(5) bond length is 3.35 Å. In the eighteenth Tb site, Tb(18) is bonded in a 4-coordinate geometry to two equivalent Fe(1), one Bi(1), and one Bi(6) atom. Both Tb(18)-Fe(1) bond lengths are 2.88 Å. The Tb(18)-Bi(1) bond length is 3.35 Å. The Tb(18)-Bi(6) bond length is 3.35 Å. In the nineteenth Tb site, Tb(19) is bonded in a 4-coordinate geometry to two equivalent Fe(2), one Bi(2), and one Bi(7) atom. Both Tb(19)-Fe(2) bond lengths are 2.87 Å. The Tb(19)-Bi(2) bond length is 3.35 Å. The Tb(19)-Bi(7) bond length is 3.35 Å. In the twentieth Tb site, Tb(20) is bonded in a 4-coordinate geometry to two equivalent Fe(3), one Bi(3), and one Bi(8) atom. Both Tb(20)-Fe(3) bond lengths are 2.88 Å. The Tb(20)-Bi(3) bond length is 3.36 Å. The Tb(20)-Bi(8) bond length is 3.34 Å. In the twenty-first Tb site, Tb(21) is bonded in a 4-coordinate geometry to two equivalent Co(1), one Bi(1), and one Bi(5) atom. Both Tb(21)-Co(1) bond lengths are 2.88 Å. The Tb(21)-Bi(1) bond length is 3.33 Å. The Tb(21)-Bi(5) bond length is 3.30 Å. In the twenty-second Tb site, Tb(22) is bonded in a 4-coordinate geometry to two equivalent Fe(1), one Bi(2), and one Bi(6) atom. Both Tb(22)-Fe(1) bond lengths are 2.85 Å. The Tb(22)-Bi(2) bond length is 3.32 Å. The Tb(22)-Bi(6) bond length is 3.31 Å. In the twenty-third Tb site, Tb(23) is bonded in a 4-coordinate geometry to two equivalent Fe(2), one Bi(3), and one Bi(7) atom. Both Tb(23)-Fe(2) bond lengths are 2.87 Å. The Tb(23)-Bi(3) bond length is 3.33 Å. The Tb(23)-Bi(7) bond length is 3.30 Å. In the twenty-fourth Tb site, Tb(24) is bonded in a 4-coordinate geometry to two equivalent Fe(3), one Bi(4), and one Bi(8) atom. Both Tb(24)-Fe(3) bond lengths are 2.86 Å. The Tb(24)-Bi(4) bond length is 3.32 Å. The Tb(24)-Bi(8) bond length is 3.31 Å. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 9-coordinate geometry to one Tb(14), one Tb(5), one Tb(9), two equivalent Tb(1), two equivalent Tb(18), and two equivalent Tb(22) atoms. In the second Fe site, Fe(2) is bonded in a 9-coordinate geometry to one Tb(10), one Tb(15), one Tb(6), two equivalent Tb(19), two equivalent Tb(2), and two equivalent Tb(23) atoms. In the third Fe site, Fe(3) is bonded in a 9-coordinate geometry to one Tb(11), one Tb(16), one Tb(7), two equivalent Tb(20), two equivalent Tb(24), and two equivalent Tb(3) atoms. Co(1) is bonded in a 9-coordinate geometry to one Tb(12), one Tb(13), one Tb(8), two equivalent Tb(17), two equivalent Tb(21), and two equivalent Tb(4) atoms. There are eight inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 9-coordinate geometry to one Tb(1), one Tb(18), one Tb(21), two equivalent Tb(13), two equivalent Tb(5), and two equivalent Tb(9) atoms. In the second Bi site, Bi(2) is bonded in a 9-coordinate geometry to one Tb(19), one Tb(2), one Tb(22), two equivalent Tb(10), two equivalent Tb(14), and two equivalent Tb(6) atoms. In the third Bi site, Bi(3) is bonded in a 9-coordinate geometry to one Tb(20), one Tb(23), one Tb(3), two equivalent Tb(11), two equivalent Tb(15), and two equivalent Tb(7) atoms. In the fourth Bi site, Bi(4) is bonded in a 9-coordinate geometry to one Tb(17), one Tb(24), one Tb(4), two equivalent Tb(12), two equivalent Tb(16), and two equivalent Tb(8) atoms. In the fifth Bi site, Bi(5) is bonded in a 9-coordinate geometry to one Tb(1), one Tb(17), one Tb(21), two equivalent Tb(13), two equivalent Tb(8), and two equivalent Tb(9) atoms. In the sixth Bi site, Bi(6) is bonded in a 9-coordinate geometry to one Tb(18), one Tb(2), one Tb(22), two equivalent Tb(10), two equivalent Tb(14), and two equivalent Tb(5) atoms. In the seventh Bi site, Bi(7) is bonded in a 9-coordinate geometry to one Tb(19), one Tb(23), one Tb(3), two equivalent Tb(11), two equivalent Tb(15), and two equivalent Tb(6) atoms. In the eighth Bi site, Bi(8) is bonded in a 9-coordinate geometry to one Tb(20), one Tb(24), one Tb(4), two equivalent Tb(12), two equivalent Tb(16), and two equivalent Tb(7) atoms.