Materials Data on Ag2Hg5 by Materials Project
Ag2Hg5 crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. Ag is bonded to two equivalent Ag and ten Hg atoms to form a mixture of edge, face, and corner-sharing AgAg2Hg10 cuboctahedra. Both Ag–Ag bond lengths are 3.09 Å. There are a spread of Ag–Hg bond distances ranging from 3.05–3.18 Å. There are two inequivalent Hg sites. In the first Hg site, Hg is bonded in a distorted q6 geometry to four equivalent Ag and six Hg atoms. There are two shorter (3.09 Å) and four longer (3.13 Å) Hg–Hg bond lengths. In the second Hg site, Hg is bonded in a 9-coordinate geometry to four equivalent Ag and five Hg atoms. There are two shorter (3.06 Å) and two longer (3.09 Å) Hg–Hg bond lengths.
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