AcSi3 crystallizes in the hexagonal P6_3/mmc space group. Ac(1) is bonded to twelve equivalent Si(1) atoms to form a mixture of distorted corner and face-sharing AcSi12 cuboctahedra. Si(1) is bonded in a 10-coordinate geometry to four equivalent Ac(1) and six equivalent Si(1) atoms.
AcSi3 crystallizes in the hexagonal P6_3/mmc space group. Ac(1) is bonded to twelve equivalent Si(1) atoms to form a mixture of distorted corner and face-sharing AcSi12 cuboctahedra. There are six shorter (3.29 Å) and six longer (3.31 Å) Ac(1)-Si(1) bond lengths. Si(1) is bonded in a 10-coordinate geometry to four equivalent Ac(1) and six equivalent Si(1) atoms. There are two shorter (2.46 Å) and four longer (2.74 Å) Si(1)-Si(1) bond lengths.