Eu2(RhGa3)3 crystallizes in the orthorhombic Cmcm space group. Eu(1) is bonded in a 11-coordinate geometry to one Ga(2), two equivalent Ga(3), two equivalent Ga(4), and six equivalent Ga(1) atoms. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 8-coordinate geometry to two equivalent Ga(3), two equivalent Ga(4), and four equivalent Ga(1) atoms. In the second Rh site, Rh(2) is bonded in a 8-coordinate geometry to two equivalent Ga(2), two equivalent Ga(3), and four equivalent Ga(1) atoms. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to three equivalent Eu(1), one Rh(2), two equivalent Rh(1), one Ga(2), one Ga(3), one Ga(4), and two equivalent Ga(1) atoms. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to two equivalent Eu(1), two equivalent Rh(2), two equivalent Ga(4), and four equivalent Ga(1) atoms. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to two equivalent Eu(1), one Rh(2), two equivalent Rh(1), one Ga(3), two equivalent Ga(1), and two equivalent Ga(4) atoms. In the fourth Ga site, Ga(4) is bonded in a 10-coordinate geometry to two equivalent Eu(1), two equivalent Rh(1), one Ga(2), one Ga(4), two equivalent Ga(1), and two equivalent Ga(3) atoms.
Eu2(RhGa3)3 crystallizes in the orthorhombic Cmcm space group. Eu(1) is bonded in a 11-coordinate geometry to one Ga(2), two equivalent Ga(3), two equivalent Ga(4), and six equivalent Ga(1) atoms. The Eu(1)-Ga(2) bond length is 3.10 Å. Both Eu(1)-Ga(3) bond lengths are 3.12 Å. There is one shorter (3.09 Å) and one longer (3.11 Å) Eu(1)-Ga(4) bond length. There are four shorter (3.09 Å) and two longer (3.14 Å) Eu(1)-Ga(1) bond lengths. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 8-coordinate geometry to two equivalent Ga(3), two equivalent Ga(4), and four equivalent Ga(1) atoms. Both Rh(1)-Ga(3) bond lengths are 2.60 Å. Both Rh(1)-Ga(4) bond lengths are 2.64 Å. All Rh(1)-Ga(1) bond lengths are 2.59 Å. In the second Rh site, Rh(2) is bonded in a 8-coordinate geometry to two equivalent Ga(2), two equivalent Ga(3), and four equivalent Ga(1) atoms. Both Rh(2)-Ga(2) bond lengths are 2.64 Å. Both Rh(2)-Ga(3) bond lengths are 2.62 Å. All Rh(2)-Ga(1) bond lengths are 2.59 Å. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to three equivalent Eu(1), one Rh(2), two equivalent Rh(1), one Ga(2), one Ga(3), one Ga(4), and two equivalent Ga(1) atoms. The Ga(1)-Ga(2) bond length is 2.77 Å. The Ga(1)-Ga(3) bond length is 2.79 Å. The Ga(1)-Ga(4) bond length is 2.80 Å. There is one shorter (2.89 Å) and one longer (2.94 Å) Ga(1)-Ga(1) bond length. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to two equivalent Eu(1), two equivalent Rh(2), two equivalent Ga(4), and four equivalent Ga(1) atoms. Both Ga(2)-Ga(4) bond lengths are 2.70 Å. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to two equivalent Eu(1), one Rh(2), two equivalent Rh(1), one Ga(3), two equivalent Ga(1), and two equivalent Ga(4) atoms. The Ga(3)-Ga(3) bond length is 2.72 Å. Both Ga(3)-Ga(4) bond lengths are 2.86 Å. In the fourth Ga site, Ga(4) is bonded in a 10-coordinate geometry to two equivalent Eu(1), two equivalent Rh(1), one Ga(2), one Ga(4), two equivalent Ga(1), and two equivalent Ga(3) atoms. The Ga(4)-Ga(4) bond length is 2.69 Å.