Materials Data on SmPb3 by Materials Project
SmPb3 is Uranium Silicide structured and crystallizes in the monoclinic Pm space group. The structure is three-dimensional. Sm is bonded to twelve Pb atoms to form a mixture of face and corner-sharing SmPb12 cuboctahedra. There are a spread of Sm–Pb bond distances ranging from 3.52–3.54 Å. There are three inequivalent Pb sites. In the first Pb site, Pb is bonded in a distorted rectangular see-saw-like geometry to four equivalent Sm atoms. In the second Pb site, Pb is bonded in a distorted rectangular see-saw-like geometry to four equivalent Sm atoms. In the third Pb site, Pb is bonded in a distorted square co-planar geometry to four equivalent Sm atoms.
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