Rh2Ga9 crystallizes in the monoclinic P2_1/c space group. Rh(1) is bonded in a 9-coordinate geometry to one Ga(1), two equivalent Ga(2), two equivalent Ga(3), two equivalent Ga(4), and two equivalent Ga(5) atoms. There are five inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a linear geometry to two equivalent Rh(1) atoms. In the second Ga site, Ga(2) is bonded in a 2-coordinate geometry to two equivalent Rh(1) atoms. In the third Ga site, Ga(3) is bonded in a 2-coordinate geometry to two equivalent Rh(1) atoms. In the fourth Ga site, Ga(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Rh(1) atoms. In the fifth Ga site, Ga(5) is bonded in a 2-coordinate geometry to two equivalent Rh(1) atoms.
Rh2Ga9 crystallizes in the monoclinic P2_1/c space group. Rh(1) is bonded in a 9-coordinate geometry to one Ga(1), two equivalent Ga(2), two equivalent Ga(3), two equivalent Ga(4), and two equivalent Ga(5) atoms. The Rh(1)-Ga(1) bond length is 2.43 Å. There is one shorter (2.56 Å) and one longer (2.57 Å) Rh(1)-Ga(2) bond length. There is one shorter (2.56 Å) and one longer (2.57 Å) Rh(1)-Ga(3) bond length. There is one shorter (2.63 Å) and one longer (2.67 Å) Rh(1)-Ga(4) bond length. There is one shorter (2.53 Å) and one longer (2.54 Å) Rh(1)-Ga(5) bond length. There are five inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a linear geometry to two equivalent Rh(1) atoms. In the second Ga site, Ga(2) is bonded in a 2-coordinate geometry to two equivalent Rh(1) atoms. In the third Ga site, Ga(3) is bonded in a 2-coordinate geometry to two equivalent Rh(1) atoms. In the fourth Ga site, Ga(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Rh(1) atoms. In the fifth Ga site, Ga(5) is bonded in a 2-coordinate geometry to two equivalent Rh(1) atoms.