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Pb3Y is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Y is bonded to twelve equivalent Pb atoms to form a mixture of face and corner-sharing YPb12 cuboctahedra. All Y–Pb bond lengths are 3.47 Å. Pb is bonded in a distorted square co-planar geometry to four equivalent Y atoms.
YPb2 is Zirconium Disilicide structured and crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Y is bonded in a 10-coordinate geometry to ten Pb atoms. There are a spread of Y–Pb bond distances ranging from 3.29–3.64 Å. There are two inequivalent Pb sites. In the first Pb site, Pb is bonded in a 4-coordinate geometry to six equivalent Y and two equivalent Pb atoms. Both Pb–Pb bond lengths are 3.27 Å. In the second Pb site, Pb is bonded in a 8-coordinate geometry to four equivalent Y and four equivalent Pb atoms. All Pb–Pb bond lengths are 3.25 Å.
Y3Pb is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Y sites. In the first Y site, Y is bonded to eight Y and four equivalent Pb atoms to form distorted YY8Pb4 cuboctahedra that share corners with twelve equivalent YY8Pb4 cuboctahedra, edges with eight equivalent YY8Pb4 cuboctahedra, edges with eight equivalent PbY12 cuboctahedra, faces with four equivalent PbY12 cuboctahedra, and faces with ten equivalent YY8Pb4 cuboctahedra. There are four shorter (3.34 Å) and four longer (3.57 Å) Y–Y bond lengths. All Y–Pb bond lengths are 3.57 Å. In the second Y site, Y is bonded in a square co-planar geometry to eight equivalent Y and four equivalent Pb atoms. All Y–Pb bond lengths are 3.34 Å. Pb is bonded to twelve Y atoms to form PbY12 cuboctahedra that share corners with four equivalent PbY12 cuboctahedra, edges with eight equivalent PbY12 cuboctahedra, edges with sixteen equivalent YY8Pb4 cuboctahedra, faces with four equivalent PbY12 cuboctahedra, and faces with eight equivalent YY8Pb4 cuboctahedra.