Tm2CuGa3 is Tungsten boride-derived structured and crystallizes in the trigonal P3m1 space group. There are two inequivalent Tm sites. In the first Tm site, Tm(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 Tm site, Tm(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 Tm(1), three equivalent Tm(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 10-coordinate geometry to three equivalent Tm(1), three equivalent Tm(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 Tm(1), three equivalent Tm(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 Tm(1), three equivalent Tm(2), one Cu(1), and three equivalent Ga(2) atoms.
Tm2CuGa3 is Tungsten boride-derived structured and crystallizes in the trigonal P3m1 space group. There are two inequivalent Tm sites. In the first Tm site, Tm(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 Tm(1)-Cu(1) bond lengths are 2.83 Å. All Tm(1)-Ga(1) bond lengths are 3.06 Å. All Tm(1)-Ga(2) bond lengths are 3.34 Å. All Tm(1)-Ga(3) bond lengths are 2.92 Å. In the second Tm site, Tm(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 Tm(2)-Cu(1) bond lengths are 3.16 Å. All Tm(2)-Ga(1) bond lengths are 2.91 Å. All Tm(2)-Ga(2) bond lengths are 2.91 Å. All Tm(2)-Ga(3) bond lengths are 3.33 Å. Cu(1) is bonded in a 10-coordinate geometry to three equivalent Tm(1), three equivalent Tm(2), one Ga(3), and three equivalent Ga(1) atoms. The Cu(1)-Ga(3) bond length is 2.89 Å. All Cu(1)-Ga(1) bond lengths are 2.52 Å. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to three equivalent Tm(1), three equivalent Tm(2), three equivalent Cu(1), and one Ga(2) atom. The Ga(1)-Ga(2) bond length is 3.04 Å. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to three equivalent Tm(1), three equivalent Tm(2), one Ga(1), and three equivalent Ga(3) atoms. All Ga(2)-Ga(3) bond lengths are 2.58 Å. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to three equivalent Tm(1), three equivalent Tm(2), one Cu(1), and three equivalent Ga(2) atoms.