YbCuZnSi2 crystallizes in the tetragonal I-4m2 space group. Yb(1) is bonded in a 16-coordinate geometry to four equivalent Cu(1), four equivalent Zn(1), and eight equivalent Si(1) atoms. Cu(1) is bonded to four equivalent Yb(1), four equivalent Zn(1), and four equivalent Si(1) atoms to form CuYb4Zn4Si4 cuboctahedra that share corners with twelve equivalent Cu(1)Yb4Zn4Si4 cuboctahedra, corners with four equivalent Zn(1)Yb4Cu4Si4 tetrahedra, edges with two equivalent Zn(1)Yb4Cu4Si4 tetrahedra, faces with four equivalent Cu(1)Yb4Zn4Si4 cuboctahedra, and faces with four equivalent Zn(1)Yb4Cu4Si4 tetrahedra. Zn(1) is bonded to four equivalent Yb(1), four equivalent Cu(1), and four equivalent Si(1) atoms to form distorted ZnYb4Cu4Si4 tetrahedra that share corners with four equivalent Cu(1)Yb4Zn4Si4 cuboctahedra, corners with twelve equivalent Zn(1)Yb4Cu4Si4 tetrahedra, edges with two equivalent Cu(1)Yb4Zn4Si4 cuboctahedra, faces with four equivalent Cu(1)Yb4Zn4Si4 cuboctahedra, and faces with four equivalent Zn(1)Yb4Cu4Si4 tetrahedra. Si(1) is bonded in a 9-coordinate geometry to four equivalent Yb(1), two equivalent Cu(1), two equivalent Zn(1), and one Si(1) atom.
YbCuZnSi2 crystallizes in the tetragonal I-4m2 space group. Yb(1) is bonded in a 16-coordinate geometry to four equivalent Cu(1), four equivalent Zn(1), and eight equivalent Si(1) atoms. All Yb(1)-Cu(1) bond lengths are 3.25 Å. All Yb(1)-Zn(1) bond lengths are 3.25 Å. All Yb(1)-Si(1) bond lengths are 3.10 Å. Cu(1) is bonded to four equivalent Yb(1), four equivalent Zn(1), and four equivalent Si(1) atoms to form CuYb4Zn4Si4 cuboctahedra that share corners with twelve equivalent Cu(1)Yb4Zn4Si4 cuboctahedra, corners with four equivalent Zn(1)Yb4Cu4Si4 tetrahedra, edges with two equivalent Zn(1)Yb4Cu4Si4 tetrahedra, faces with four equivalent Cu(1)Yb4Zn4Si4 cuboctahedra, and faces with four equivalent Zn(1)Yb4Cu4Si4 tetrahedra. All Cu(1)-Zn(1) bond lengths are 2.88 Å. All Cu(1)-Si(1) bond lengths are 2.45 Å. Zn(1) is bonded to four equivalent Yb(1), four equivalent Cu(1), and four equivalent Si(1) atoms to form distorted ZnYb4Cu4Si4 tetrahedra that share corners with four equivalent Cu(1)Yb4Zn4Si4 cuboctahedra, corners with twelve equivalent Zn(1)Yb4Cu4Si4 tetrahedra, edges with two equivalent Cu(1)Yb4Zn4Si4 cuboctahedra, faces with four equivalent Cu(1)Yb4Zn4Si4 cuboctahedra, and faces with four equivalent Zn(1)Yb4Cu4Si4 tetrahedra. All Zn(1)-Si(1) bond lengths are 2.45 Å. Si(1) is bonded in a 9-coordinate geometry to four equivalent Yb(1), two equivalent Cu(1), two equivalent Zn(1), and one Si(1) atom. The Si(1)-Si(1) bond length is 2.33 Å.