Yb3(Ni3Si)2 crystallizes in the cubic Im-3m space group. Yb(1) is bonded in a 12-coordinate geometry to eight equivalent Ni(1) and four equivalent Si(1) atoms. Ni(1) is bonded in a 10-coordinate geometry to four equivalent Yb(1), four equivalent Ni(1), and two equivalent Si(1) atoms. Si(1) is bonded to six equivalent Yb(1) and six equivalent Ni(1) atoms to form a mixture of corner and face-sharing SiYb6Ni6 cuboctahedra.
Yb3(Ni3Si)2 crystallizes in the cubic Im-3m space group. Yb(1) is bonded in a 12-coordinate geometry to eight equivalent Ni(1) and four equivalent Si(1) atoms. There are four shorter (2.74 Å) and four longer (2.80 Å) Yb(1)-Ni(1) bond lengths. All Yb(1)-Si(1) bond lengths are 3.08 Å. Ni(1) is bonded in a 10-coordinate geometry to four equivalent Yb(1), four equivalent Ni(1), and two equivalent Si(1) atoms. All Ni(1)-Ni(1) bond lengths are 2.50 Å. Both Ni(1)-Si(1) bond lengths are 2.34 Å. Si(1) is bonded to six equivalent Yb(1) and six equivalent Ni(1) atoms to form a mixture of corner and face-sharing SiYb6Ni6 cuboctahedra.