Lu2PdSi3 is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded to four equivalent Pd(1), two equivalent Si(1), two equivalent Si(2), and four equivalent Si(3) atoms to form LuSi8Pd4 cuboctahedra that share edges with four equivalent Lu(1)Si8Pd4 cuboctahedra, edges with eight equivalent Lu(2)Si10Pd2 cuboctahedra, faces with four equivalent Lu(2)Si10Pd2 cuboctahedra, and faces with four equivalent Lu(1)Si8Pd4 cuboctahedra. In the second Lu site, Lu(2) is bonded to two equivalent Pd(1), two equivalent Si(3), four equivalent Si(1), and four equivalent Si(2) atoms to form LuSi10Pd2 cuboctahedra that share edges with four equivalent Lu(2)Si10Pd2 cuboctahedra, edges with eight equivalent Lu(1)Si8Pd4 cuboctahedra, faces with four equivalent Lu(2)Si10Pd2 cuboctahedra, and faces with four equivalent Lu(1)Si8Pd4 cuboctahedra. Pd(1) is bonded in a 9-coordinate geometry to two equivalent Lu(2), four equivalent Lu(1), one Si(3), and two equivalent Si(2) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Lu(1), four equivalent Lu(2), one Si(2), and two equivalent Si(3) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Lu(1), four equivalent Lu(2), two equivalent Pd(1), and one Si(1) atom. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Lu(2), four equivalent Lu(1), one Pd(1), and two equivalent Si(1) atoms.
Lu2PdSi3 is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded to four equivalent Pd(1), two equivalent Si(1), two equivalent Si(2), and four equivalent Si(3) atoms to form LuSi8Pd4 cuboctahedra that share edges with four equivalent Lu(1)Si8Pd4 cuboctahedra, edges with eight equivalent Lu(2)Si10Pd2 cuboctahedra, faces with four equivalent Lu(2)Si10Pd2 cuboctahedra, and faces with four equivalent Lu(1)Si8Pd4 cuboctahedra. All Lu(1)-Pd(1) bond lengths are 3.08 Å. Both Lu(1)-Si(1) bond lengths are 2.97 Å. Both Lu(1)-Si(2) bond lengths are 3.02 Å. All Lu(1)-Si(3) bond lengths are 3.04 Å. In the second Lu site, Lu(2) is bonded to two equivalent Pd(1), two equivalent Si(3), four equivalent Si(1), and four equivalent Si(2) atoms to form LuSi10Pd2 cuboctahedra that share edges with four equivalent Lu(2)Si10Pd2 cuboctahedra, edges with eight equivalent Lu(1)Si8Pd4 cuboctahedra, faces with four equivalent Lu(2)Si10Pd2 cuboctahedra, and faces with four equivalent Lu(1)Si8Pd4 cuboctahedra. Both Lu(2)-Pd(1) bond lengths are 3.02 Å. Both Lu(2)-Si(3) bond lengths are 2.96 Å. All Lu(2)-Si(1) bond lengths are 3.04 Å. All Lu(2)-Si(2) bond lengths are 3.07 Å. Pd(1) is bonded in a 9-coordinate geometry to two equivalent Lu(2), four equivalent Lu(1), one Si(3), and two equivalent Si(2) atoms. The Pd(1)-Si(3) bond length is 2.33 Å. Both Pd(1)-Si(2) bond lengths are 2.35 Å. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Lu(1), four equivalent Lu(2), one Si(2), and two equivalent Si(3) atoms. The Si(1)-Si(2) bond length is 2.31 Å. Both Si(1)-Si(3) bond lengths are 2.36 Å. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Lu(1), four equivalent Lu(2), two equivalent Pd(1), and one Si(1) atom. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Lu(2), four equivalent Lu(1), one Pd(1), and two equivalent Si(1) atoms.