NpGa2 is hexagonal omega structure-like structured and crystallizes in the hexagonal P6/mmm space group. Np(1) is bonded to twelve equivalent Ga(1) atoms to form a mixture of face and edge-sharing NpGa12 cuboctahedra. Ga(1) is bonded in a 9-coordinate geometry to six equivalent Np(1) and three equivalent Ga(1) atoms.
NpGa2 is hexagonal omega structure-like structured and crystallizes in the hexagonal P6/mmm space group. Np(1) is bonded to twelve equivalent Ga(1) atoms to form a mixture of face and edge-sharing NpGa12 cuboctahedra. All Np(1)-Ga(1) bond lengths are 3.15 Å. Ga(1) is bonded in a 9-coordinate geometry to six equivalent Np(1) and three equivalent Ga(1) atoms. All Ga(1)-Ga(1) bond lengths are 2.57 Å.