Materials Data on HgPb4 by Materials Project
HgPb4 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Hg is bonded in a distorted hexagonal planar geometry to six equivalent Pb atoms. All Hg–Pb bond lengths are 3.42 Å. There are two inequivalent Pb sites. In the first Pb site, Pb is bonded in a 12-coordinate geometry to three equivalent Hg and three equivalent Pb atoms. All Pb–Pb bond lengths are 3.62 Å. In the second Pb site, Pb is bonded to twelve Pb atoms to form a mixture of face, edge, and corner-sharing PbPb12 cuboctahedra. There are six shorter (3.52 Å) and three longer (3.61 Å) Pb–Pb bond lengths.
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