SrY crystallizes in the hexagonal P-6m2 space group. Sr(1) is bonded to six equivalent Sr(1) and six equivalent Y(1) atoms to form SrSr6Y6 cuboctahedra that share corners with eighteen equivalent Sr(1)Sr6Y6 cuboctahedra, edges with six equivalent Sr(1)Sr6Y6 cuboctahedra, edges with twelve equivalent Y(1)Sr6Y6 cuboctahedra, faces with eight equivalent Sr(1)Sr6Y6 cuboctahedra, and faces with twelve equivalent Y(1)Sr6Y6 cuboctahedra. Y(1) is bonded to six equivalent Sr(1) and six equivalent Y(1) atoms to form YSr6Y6 cuboctahedra that share corners with eighteen equivalent Y(1)Sr6Y6 cuboctahedra, edges with six equivalent Y(1)Sr6Y6 cuboctahedra, edges with twelve equivalent Sr(1)Sr6Y6 cuboctahedra, faces with eight equivalent Y(1)Sr6Y6 cuboctahedra, and faces with twelve equivalent Sr(1)Sr6Y6 cuboctahedra.
SrY crystallizes in the hexagonal P-6m2 space group. Sr(1) is bonded to six equivalent Sr(1) and six equivalent Y(1) atoms to form SrSr6Y6 cuboctahedra that share corners with eighteen equivalent Sr(1)Sr6Y6 cuboctahedra, edges with six equivalent Sr(1)Sr6Y6 cuboctahedra, edges with twelve equivalent Y(1)Sr6Y6 cuboctahedra, faces with eight equivalent Sr(1)Sr6Y6 cuboctahedra, and faces with twelve equivalent Y(1)Sr6Y6 cuboctahedra. All Sr(1)-Sr(1) bond lengths are 3.83 Å. All Sr(1)-Y(1) bond lengths are 3.88 Å. Y(1) is bonded to six equivalent Sr(1) and six equivalent Y(1) atoms to form YSr6Y6 cuboctahedra that share corners with eighteen equivalent Y(1)Sr6Y6 cuboctahedra, edges with six equivalent Y(1)Sr6Y6 cuboctahedra, edges with twelve equivalent Sr(1)Sr6Y6 cuboctahedra, faces with eight equivalent Y(1)Sr6Y6 cuboctahedra, and faces with twelve equivalent Sr(1)Sr6Y6 cuboctahedra. All Y(1)-Y(1) bond lengths are 3.83 Å.