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Gd2Nd is hexagonal omega structure structured and crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Gd is bonded in a 3-coordinate geometry to three equivalent Gd and six equivalent Nd atoms. All Gd–Gd bond lengths are 2.46 Å. All Gd–Nd bond lengths are 3.26 Å. Nd is bonded to twelve equivalent Gd atoms to form a mixture of edge and face-sharing NdGd12 cuboctahedra.
Gd3Nd is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Gd is bonded to eight equivalent Gd and four equivalent Nd atoms to form GdNd4Gd8 cuboctahedra that share corners with twelve equivalent GdNd4Gd8 cuboctahedra, edges with eight equivalent NdGd12 cuboctahedra, edges with sixteen equivalent GdNd4Gd8 cuboctahedra, faces with four equivalent NdGd12 cuboctahedra, and faces with fourteen equivalent GdNd4Gd8 cuboctahedra. All Gd–Gd bond lengths are 3.62 Å. All Gd–Nd bond lengths are 3.62 Å. Nd is bonded to twelve equivalent Gd atoms to form NdGd12 cuboctahedra that share corners with twelve equivalent NdGd12 cuboctahedra, edges with twenty-four equivalent GdNd4Gd8 cuboctahedra, faces with six equivalent NdGd12 cuboctahedra, and faces with twelve equivalent GdNd4Gd8 cuboctahedra.