KAc3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. K(1) is bonded to twelve equivalent Ac(1) atoms to form KAc12 cuboctahedra that share corners with twelve equivalent K(1)Ac12 cuboctahedra, edges with twenty-four equivalent Ac(1)K4Ac8 cuboctahedra, faces with six equivalent K(1)Ac12 cuboctahedra, and faces with twelve equivalent Ac(1)K4Ac8 cuboctahedra. Ac(1) is bonded to four equivalent K(1) and eight equivalent Ac(1) atoms to form AcK4Ac8 cuboctahedra that share corners with twelve equivalent Ac(1)K4Ac8 cuboctahedra, edges with eight equivalent K(1)Ac12 cuboctahedra, edges with sixteen equivalent Ac(1)K4Ac8 cuboctahedra, faces with four equivalent K(1)Ac12 cuboctahedra, and faces with fourteen equivalent Ac(1)K4Ac8 cuboctahedra.
KAc3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. K(1) is bonded to twelve equivalent Ac(1) atoms to form KAc12 cuboctahedra that share corners with twelve equivalent K(1)Ac12 cuboctahedra, edges with twenty-four equivalent Ac(1)K4Ac8 cuboctahedra, faces with six equivalent K(1)Ac12 cuboctahedra, and faces with twelve equivalent Ac(1)K4Ac8 cuboctahedra. All K(1)-Ac(1) bond lengths are 4.06 Å. Ac(1) is bonded to four equivalent K(1) and eight equivalent Ac(1) atoms to form AcK4Ac8 cuboctahedra that share corners with twelve equivalent Ac(1)K4Ac8 cuboctahedra, edges with eight equivalent K(1)Ac12 cuboctahedra, edges with sixteen equivalent Ac(1)K4Ac8 cuboctahedra, faces with four equivalent K(1)Ac12 cuboctahedra, and faces with fourteen equivalent Ac(1)K4Ac8 cuboctahedra. All Ac(1)-Ac(1) bond lengths are 4.06 Å.