Ho2CuGa3 is Tungsten boride-derived structured and crystallizes in the trigonal P3m1 space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 12-coordinate geometry to three equivalent Cu(1), three equivalent Ga(1), three equivalent Ga(2), and three equivalent Ga(3) atoms. In the second Ho site, Ho(2) is bonded in a 12-coordinate geometry to three equivalent Cu(1), three equivalent Ga(1), three equivalent Ga(2), and three equivalent Ga(3) atoms. Cu(1) is bonded in a 10-coordinate geometry to three equivalent Ho(1), three equivalent Ho(2), one Ga(3), and three equivalent Ga(1) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to three equivalent Ho(1), three equivalent Ho(2), three equivalent Cu(1), and one Ga(2) atom. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to three equivalent Ho(1), three equivalent Ho(2), one Ga(1), and three equivalent Ga(3) atoms. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to three equivalent Ho(1), three equivalent Ho(2), one Cu(1), and three equivalent Ga(2) atoms.
Ho2CuGa3 is Tungsten boride-derived structured and crystallizes in the trigonal P3m1 space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 12-coordinate geometry to three equivalent Cu(1), three equivalent Ga(1), three equivalent Ga(2), and three equivalent Ga(3) atoms. All Ho(1)-Cu(1) bond lengths are 2.86 Å. All Ho(1)-Ga(1) bond lengths are 3.08 Å. All Ho(1)-Ga(2) bond lengths are 3.36 Å. All Ho(1)-Ga(3) bond lengths are 2.95 Å. In the second Ho site, Ho(2) is bonded in a 12-coordinate geometry to three equivalent Cu(1), three equivalent Ga(1), three equivalent Ga(2), and three equivalent Ga(3) atoms. All Ho(2)-Cu(1) bond lengths are 3.17 Å. All Ho(2)-Ga(1) bond lengths are 2.94 Å. All Ho(2)-Ga(2) bond lengths are 2.94 Å. All Ho(2)-Ga(3) bond lengths are 3.35 Å. Cu(1) is bonded in a 10-coordinate geometry to three equivalent Ho(1), three equivalent Ho(2), one Ga(3), and three equivalent Ga(1) atoms. The Cu(1)-Ga(3) bond length is 2.96 Å. All Cu(1)-Ga(1) bond lengths are 2.53 Å. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to three equivalent Ho(1), three equivalent Ho(2), three equivalent Cu(1), and one Ga(2) atom. The Ga(1)-Ga(2) bond length is 3.10 Å. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to three equivalent Ho(1), three equivalent Ho(2), one Ga(1), and three equivalent Ga(3) atoms. All Ga(2)-Ga(3) bond lengths are 2.59 Å. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to three equivalent Ho(1), three equivalent Ho(2), one Cu(1), and three equivalent Ga(2) atoms.