Gd2MnGa6 crystallizes in the cubic Fm-3m space group. Gd(1) is bonded to twelve equivalent Ga(1) atoms to form GdGa12 cuboctahedra that share corners with twelve equivalent Gd(1)Ga12 cuboctahedra, faces with six equivalent Gd(1)Ga12 cuboctahedra, and faces with four equivalent Mn(1)Ga6 octahedra. Mn(1) is bonded to six equivalent Ga(1) atoms to form MnGa6 octahedra that share faces with eight equivalent Gd(1)Ga12 cuboctahedra. Ga(1) is bonded in a 9-coordinate geometry to four equivalent Gd(1), one Mn(1), and four equivalent Ga(1) atoms.
Gd2MnGa6 crystallizes in the cubic Fm-3m space group. Gd(1) is bonded to twelve equivalent Ga(1) atoms to form GdGa12 cuboctahedra that share corners with twelve equivalent Gd(1)Ga12 cuboctahedra, faces with six equivalent Gd(1)Ga12 cuboctahedra, and faces with four equivalent Mn(1)Ga6 octahedra. All Gd(1)-Ga(1) bond lengths are 3.11 Å. Mn(1) is bonded to six equivalent Ga(1) atoms to form MnGa6 octahedra that share faces with eight equivalent Gd(1)Ga12 cuboctahedra. All Mn(1)-Ga(1) bond lengths are 2.49 Å. Ga(1) is bonded in a 9-coordinate geometry to four equivalent Gd(1), one Mn(1), and four equivalent Ga(1) atoms. All Ga(1)-Ga(1) bond lengths are 2.68 Å.