Fe2Ga is alpha La-derived structured and crystallizes in the trigonal P-3m1 space group. Fe(1) is bonded to nine equivalent Fe(1) and three equivalent Ga(1) atoms to form FeGa3Fe9 cuboctahedra that share corners with three equivalent Ga(1)Ga6Fe6 cuboctahedra, corners with nine equivalent Fe(1)Ga3Fe9 cuboctahedra, edges with nine equivalent Ga(1)Ga6Fe6 cuboctahedra, edges with fifteen equivalent Fe(1)Ga3Fe9 cuboctahedra, faces with six equivalent Ga(1)Ga6Fe6 cuboctahedra, and faces with twelve equivalent Fe(1)Ga3Fe9 cuboctahedra. Ga(1) is bonded to six equivalent Fe(1) and six equivalent Ga(1) atoms to form GaGa6Fe6 cuboctahedra that share corners with six equivalent Fe(1)Ga3Fe9 cuboctahedra, corners with six equivalent Ga(1)Ga6Fe6 cuboctahedra, edges with six equivalent Ga(1)Ga6Fe6 cuboctahedra, edges with eighteen equivalent Fe(1)Ga3Fe9 cuboctahedra, faces with six equivalent Ga(1)Ga6Fe6 cuboctahedra, and faces with twelve equivalent Fe(1)Ga3Fe9 cuboctahedra.
Fe2Ga is alpha La-derived structured and crystallizes in the trigonal P-3m1 space group. Fe(1) is bonded to nine equivalent Fe(1) and three equivalent Ga(1) atoms to form FeGa3Fe9 cuboctahedra that share corners with three equivalent Ga(1)Ga6Fe6 cuboctahedra, corners with nine equivalent Fe(1)Ga3Fe9 cuboctahedra, edges with nine equivalent Ga(1)Ga6Fe6 cuboctahedra, edges with fifteen equivalent Fe(1)Ga3Fe9 cuboctahedra, faces with six equivalent Ga(1)Ga6Fe6 cuboctahedra, and faces with twelve equivalent Fe(1)Ga3Fe9 cuboctahedra. There are three shorter (2.61 Å) and six longer (2.65 Å) Fe(1)-Fe(1) bond lengths. All Fe(1)-Ga(1) bond lengths are 2.61 Å. Ga(1) is bonded to six equivalent Fe(1) and six equivalent Ga(1) atoms to form GaGa6Fe6 cuboctahedra that share corners with six equivalent Fe(1)Ga3Fe9 cuboctahedra, corners with six equivalent Ga(1)Ga6Fe6 cuboctahedra, edges with six equivalent Ga(1)Ga6Fe6 cuboctahedra, edges with eighteen equivalent Fe(1)Ga3Fe9 cuboctahedra, faces with six equivalent Ga(1)Ga6Fe6 cuboctahedra, and faces with twelve equivalent Fe(1)Ga3Fe9 cuboctahedra. All Ga(1)-Ga(1) bond lengths are 2.65 Å.