NdCo3Ga9 crystallizes in the monoclinic C2/m space group. Nd(1) is bonded in a 12-coordinate geometry to one Ga(3), one Ga(4), one Ga(5), two equivalent Ga(1), two equivalent Ga(10), two equivalent Ga(7), two equivalent Ga(8), and two equivalent Ga(9) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 8-coordinate geometry to one Co(3), one Ga(3), one Ga(5), one Ga(6), two equivalent Ga(8), and two equivalent Ga(9) atoms. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to two equivalent Co(3), one Ga(2), one Ga(4), one Ga(6), two equivalent Ga(10), and two equivalent Ga(7) atoms. In the third Co site, Co(3) is bonded in a 11-coordinate geometry to one Co(1), two equivalent Co(2), one Ga(10), one Ga(3), one Ga(7), two equivalent Ga(2), and three equivalent Ga(6) atoms. There are ten inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to two equivalent Nd(1), one Ga(10), one Ga(9), three equivalent Ga(2), and three equivalent Ga(3) atoms. In the second Ga site, Ga(2) is bonded in a 1-coordinate geometry to one Co(2), two equivalent Co(3), two equivalent Ga(10), two equivalent Ga(3), and three equivalent Ga(1) atoms. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to one Nd(1), one Co(1), one Co(3), two equivalent Ga(2), two equivalent Ga(9), and three equivalent Ga(1) atoms. In the fourth Ga site, Ga(4) is bonded in a 4-coordinate geometry to two equivalent Nd(1), two equivalent Co(2), and four equivalent Ga(10) atoms. In the fifth Ga site, Ga(5) is bonded in a 8-coordinate geometry to two equivalent Nd(1), two equivalent Co(1), and four equivalent Ga(9) atoms. In the sixth Ga site, Ga(6) is bonded in a 11-coordinate geometry to one Co(1), one Co(2), three equivalent Co(3), two equivalent Ga(6), two equivalent Ga(7), and two equivalent Ga(8) atoms. In the seventh Ga site, Ga(7) is bonded in a 7-coordinate geometry to two equivalent Nd(1), one Co(3), two equivalent Co(2), one Ga(10), one Ga(8), and two equivalent Ga(6) atoms. In the eighth Ga site, Ga(8) is bonded in a 6-coordinate geometry to two equivalent Nd(1), two equivalent Co(1), one Ga(7), one Ga(9), and two equivalent Ga(6) atoms. In the ninth Ga site, Ga(9) is bonded in a 10-coordinate geometry to two equivalent Nd(1), two equivalent Co(1), one Ga(1), one Ga(8), two equivalent Ga(3), and two equivalent Ga(5) atoms. In the tenth Ga site, Ga(10) is bonded in a 11-coordinate geometry to two equivalent Nd(1), one Co(3), two equivalent Co(2), one Ga(1), one Ga(7), two equivalent Ga(2), and two equivalent Ga(4) atoms.
NdCo3Ga9 crystallizes in the monoclinic C2/m space group. Nd(1) is bonded in a 12-coordinate geometry to one Ga(3), one Ga(4), one Ga(5), two equivalent Ga(1), two equivalent Ga(10), two equivalent Ga(7), two equivalent Ga(8), and two equivalent Ga(9) atoms. The Nd(1)-Ga(3) bond length is 3.54 Å. The Nd(1)-Ga(4) bond length is 3.09 Å. The Nd(1)-Ga(5) bond length is 3.10 Å. Both Nd(1)-Ga(1) bond lengths are 3.25 Å. Both Nd(1)-Ga(10) bond lengths are 3.24 Å. Both Nd(1)-Ga(7) bond lengths are 3.19 Å. Both Nd(1)-Ga(8) bond lengths are 3.21 Å. Both Nd(1)-Ga(9) bond lengths are 3.21 Å. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 8-coordinate geometry to one Co(3), one Ga(3), one Ga(5), one Ga(6), two equivalent Ga(8), and two equivalent Ga(9) atoms. The Co(1)-Co(3) bond length is 2.75 Å. The Co(1)-Ga(3) bond length is 2.34 Å. The Co(1)-Ga(5) bond length is 2.34 Å. The Co(1)-Ga(6) bond length is 2.58 Å. Both Co(1)-Ga(8) bond lengths are 2.37 Å. Both Co(1)-Ga(9) bond lengths are 2.63 Å. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to two equivalent Co(3), one Ga(2), one Ga(4), one Ga(6), two equivalent Ga(10), and two equivalent Ga(7) atoms. Both Co(2)-Co(3) bond lengths are 2.70 Å. The Co(2)-Ga(2) bond length is 2.32 Å. The Co(2)-Ga(4) bond length is 2.32 Å. The Co(2)-Ga(6) bond length is 2.55 Å. Both Co(2)-Ga(10) bond lengths are 2.58 Å. Both Co(2)-Ga(7) bond lengths are 2.40 Å. In the third Co site, Co(3) is bonded in a 11-coordinate geometry to one Co(1), two equivalent Co(2), one Ga(10), one Ga(3), one Ga(7), two equivalent Ga(2), and three equivalent Ga(6) atoms. The Co(3)-Ga(10) bond length is 2.84 Å. The Co(3)-Ga(3) bond length is 2.56 Å. The Co(3)-Ga(7) bond length is 2.55 Å. Both Co(3)-Ga(2) bond lengths are 2.91 Å. There is one shorter (2.57 Å) and two longer (2.89 Å) Co(3)-Ga(6) bond lengths. There are ten inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to two equivalent Nd(1), one Ga(10), one Ga(9), three equivalent Ga(2), and three equivalent Ga(3) atoms. The Ga(1)-Ga(10) bond length is 2.67 Å. The Ga(1)-Ga(9) bond length is 2.65 Å. There is one shorter (2.86 Å) and two longer (2.93 Å) Ga(1)-Ga(2) bond lengths. There are two shorter (2.80 Å) and one longer (2.90 Å) Ga(1)-Ga(3) bond length. In the second Ga site, Ga(2) is bonded in a 1-coordinate geometry to one Co(2), two equivalent Co(3), two equivalent Ga(10), two equivalent Ga(3), and three equivalent Ga(1) atoms. Both Ga(2)-Ga(10) bond lengths are 2.82 Å. Both Ga(2)-Ga(3) bond lengths are 2.61 Å. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to one Nd(1), one Co(1), one Co(3), two equivalent Ga(2), two equivalent Ga(9), and three equivalent Ga(1) atoms. Both Ga(3)-Ga(9) bond lengths are 2.81 Å. In the fourth Ga site, Ga(4) is bonded in a 4-coordinate geometry to two equivalent Nd(1), two equivalent Co(2), and four equivalent Ga(10) atoms. All Ga(4)-Ga(10) bond lengths are 2.80 Å. In the fifth Ga site, Ga(5) is bonded in a 8-coordinate geometry to two equivalent Nd(1), two equivalent Co(1), and four equivalent Ga(9) atoms. All Ga(5)-Ga(9) bond lengths are 2.75 Å. In the sixth Ga site, Ga(6) is bonded in a 11-coordinate geometry to one Co(1), one Co(2), three equivalent Co(3), two equivalent Ga(6), two equivalent Ga(7), and two equivalent Ga(8) atoms. Both Ga(6)-Ga(6) bond lengths are 2.94 Å. Both Ga(6)-Ga(7) bond lengths are 3.00 Å. Both Ga(6)-Ga(8) bond lengths are 3.06 Å. In the seventh Ga site, Ga(7) is bonded in a 7-coordinate geometry to two equivalent Nd(1), one Co(3), two equivalent Co(2), one Ga(10), one Ga(8), and two equivalent Ga(6) atoms. The Ga(7)-Ga(10) bond length is 2.61 Å. The Ga(7)-Ga(8) bond length is 2.49 Å. In the eighth Ga site, Ga(8) is bonded in a 6-coordinate geometry to two equivalent Nd(1), two equivalent Co(1), one Ga(7), one Ga(9), and two equivalent Ga(6) atoms. The Ga(8)-Ga(9) bond length is 2.57 Å. In the ninth Ga site, Ga(9) is bonded in a 10-coordinate geometry to two equivalent Nd(1), two equivalent Co(1), one Ga(1), one Ga(8), two equivalent Ga(3), and two equivalent Ga(5) atoms. In the tenth Ga site, Ga(10) is bonded in a 11-coordinate geometry to two equivalent Nd(1), one Co(3), two equivalent Co(2), one Ga(1), one Ga(7), two equivalent Ga(2), and two equivalent Ga(4) atoms.