Materials Data on NaSiAu3 by Materials Project
NaAu3Si crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Na1+ is bonded in a 12-coordinate geometry to one Na1+, twelve equivalent Au1+, and three equivalent Si4- atoms. The Na–Na bond length is 3.04 Å. There are a spread of Na–Au bond distances ranging from 3.05–3.37 Å. All Na–Si bond lengths are 3.24 Å. Au1+ is bonded in a 12-coordinate geometry to four equivalent Na1+ and two equivalent Si4- atoms. There are one shorter (2.49 Å) and one longer (2.64 Å) Au–Si bond lengths. Si4- is bonded in a 9-coordinate geometry to three equivalent Na1+ and six equivalent Au1+ atoms.
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