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IrGa is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ir is bonded in a body-centered cubic geometry to eight equivalent Ga atoms. All Ir–Ga bond lengths are 2.65 Å. Ga is bonded in a body-centered cubic geometry to eight equivalent Ir atoms.
IrGa2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Ir sites. In the first Ir site, Ir is bonded in a 9-coordinate geometry to nine Ga atoms. There are a spread of Ir–Ga bond distances ranging from 2.55–2.75 Å. In the second Ir site, Ir is bonded in a 9-coordinate geometry to nine Ga atoms. There are a spread of Ir–Ga bond distances ranging from 2.48–2.79 Å. There are four inequivalent Ga sites. In the first Ga site, Ga is bonded in a 4-coordinate geometry to four Ir and two equivalent Ga atoms. Both Ga–Ga bond lengths are 2.84 Å. In the second Ga site, Ga is bonded in a 4-coordinate geometry to four Ir atoms. In the third Ga site, Ga is bonded in a 2-coordinate geometry to six Ir and one Ga atom. The Ga–Ga bond length is 2.54 Å. In the fourth Ga site, Ga is bonded in a 1-coordinate geometry to five Ir and five Ga atoms.
Ir2Ga9 crystallizes in the monoclinic Pc space group. The structure is three-dimensional. there are two inequivalent Ir sites. In the first Ir site, Ir is bonded in a 9-coordinate geometry to nine Ga atoms. There are a spread of Ir–Ga bond distances ranging from 2.49–2.71 Å. In the second Ir site, Ir is bonded in a 9-coordinate geometry to nine Ga atoms. There are a spread of Ir–Ga bond distances ranging from 2.49–2.66 Å. There are nine inequivalent Ga sites. In the first Ga site, Ga is bonded in a 2-coordinate geometry to two Ir atoms. In the second Ga site, Ga is bonded in a 2-coordinate geometry to two equivalent Ir atoms. In the third Ga site, Ga is bonded in a 2-coordinate geometry to two Ir atoms. In the fourth Ga site, Ga is bonded in a 2-coordinate geometry to two Ir atoms. In the fifth Ga site, Ga is bonded in a 2-coordinate geometry to two Ir atoms. In the sixth Ga site, Ga is bonded in a distorted bent 120 degrees geometry to two Ir atoms. In the seventh Ga site, Ga is bonded in a 2-coordinate geometry to two Ir atoms. In the eighth Ga site, Ga is bonded in a distorted bent 150 degrees geometry to two Ir atoms. In the ninth Ga site, Ga is bonded in a 2-coordinate geometry to two equivalent Ir atoms.
IrGa3 crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Ir is bonded in a 8-coordinate geometry to eight Ga atoms. There are a spread of Ir–Ga bond distances ranging from 2.45–2.62 Å. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded in a linear geometry to two equivalent Ir atoms. In the second Ga site, Ga is bonded in a 1-coordinate geometry to three equivalent Ir atoms.
Ir3Ga5 crystallizes in the tetragonal P-4n2 space group. The structure is three-dimensional. there are four inequivalent Ir sites. In the first Ir site, Ir is bonded in a 8-coordinate geometry to eight Ga atoms. There are a spread of Ir–Ga bond distances ranging from 2.46–2.96 Å. In the second Ir site, Ir is bonded in a 8-coordinate geometry to eight Ga atoms. There are a spread of Ir–Ga bond distances ranging from 2.50–2.76 Å. In the third Ir site, Ir is bonded in a 6-coordinate geometry to six Ga atoms. There are four shorter (2.46 Å) and two longer (2.74 Å) Ir–Ga bond lengths. In the fourth Ir site, Ir is bonded in a 8-coordinate geometry to eight Ga atoms. There are four shorter (2.57 Å) and four longer (2.64 Å) Ir–Ga bond lengths. There are three inequivalent Ga sites. In the first Ga site, Ga is bonded in a 4-coordinate geometry to four Ir atoms. In the second Ga site, Ga is bonded in a 2-coordinate geometry to five Ir atoms. In the third Ga site, Ga is bonded in a 2-coordinate geometry to five Ir atoms.
Ir2Ga9 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ir is bonded in a 9-coordinate geometry to nine Ga atoms. There are a spread of Ir–Ga bond distances ranging from 2.47–2.69 Å. There are five inequivalent Ga sites. In the first Ga site, Ga is bonded in a distorted linear geometry to two equivalent Ir atoms. In the second Ga site, Ga is bonded in a 2-coordinate geometry to two equivalent Ir atoms. In the third Ga site, Ga is bonded in a 2-coordinate geometry to two equivalent Ir atoms. In the fourth Ga site, Ga is bonded in a 2-coordinate geometry to two equivalent Ir atoms. In the fifth Ga site, Ga is bonded in a 2-coordinate geometry to two equivalent Ir atoms.