KY is alpha Samarium-derived structured and crystallizes in the hexagonal P-6m2 space group. K(1) is bonded to six equivalent K(1) and six equivalent Y(1) atoms to form KK6Y6 cuboctahedra that share corners with eighteen equivalent K(1)K6Y6 cuboctahedra, edges with six equivalent K(1)K6Y6 cuboctahedra, edges with twelve equivalent Y(1)K6Y6 cuboctahedra, faces with eight equivalent K(1)K6Y6 cuboctahedra, and faces with twelve equivalent Y(1)K6Y6 cuboctahedra. Y(1) is bonded to six equivalent K(1) and six equivalent Y(1) atoms to form YK6Y6 cuboctahedra that share corners with eighteen equivalent Y(1)K6Y6 cuboctahedra, edges with six equivalent Y(1)K6Y6 cuboctahedra, edges with twelve equivalent K(1)K6Y6 cuboctahedra, faces with eight equivalent Y(1)K6Y6 cuboctahedra, and faces with twelve equivalent K(1)K6Y6 cuboctahedra.
KY is alpha Samarium-derived structured and crystallizes in the hexagonal P-6m2 space group. K(1) is bonded to six equivalent K(1) and six equivalent Y(1) atoms to form KK6Y6 cuboctahedra that share corners with eighteen equivalent K(1)K6Y6 cuboctahedra, edges with six equivalent K(1)K6Y6 cuboctahedra, edges with twelve equivalent Y(1)K6Y6 cuboctahedra, faces with eight equivalent K(1)K6Y6 cuboctahedra, and faces with twelve equivalent Y(1)K6Y6 cuboctahedra. All K(1)-K(1) bond lengths are 3.67 Å. All K(1)-Y(1) bond lengths are 4.16 Å. Y(1) is bonded to six equivalent K(1) and six equivalent Y(1) atoms to form YK6Y6 cuboctahedra that share corners with eighteen equivalent Y(1)K6Y6 cuboctahedra, edges with six equivalent Y(1)K6Y6 cuboctahedra, edges with twelve equivalent K(1)K6Y6 cuboctahedra, faces with eight equivalent Y(1)K6Y6 cuboctahedra, and faces with twelve equivalent K(1)K6Y6 cuboctahedra. All Y(1)-Y(1) bond lengths are 3.67 Å.