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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Sr(SiAu)2 by Materials Project

SrAu2Si2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sr2+ is bonded in a 8-coordinate geometry to eight equivalent Au1- atoms. All Sr–Au bond lengths are 3.39 Å. Au1- is bonded in a 4-coordinate geometry to four equivalent Sr2+ and four equivalent Si atoms. All Au–Si bond lengths are 2.61 Å. Si is bonded in a 5-coordinate geometry to four equivalent Au1- and one Si atom. The Si–Si bond length is 2.38 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrSi3Au by Materials Project

SrAuSi3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. Sr2+ is bonded to twelve Si+1.33- atoms to form a mixture of edge, corner, and face-sharing SrSi12 cuboctahedra. There are four shorter (3.28 Å) and eight longer (3.38 Å) Sr–Si bond lengths. Au2+ is bonded in a 5-coordinate geometry to five Si+1.33- atoms. All Au–Si bond lengths are 2.54 Å. There are two inequivalent Si+1.33- sites. In the first Si+1.33- site, Si+1.33- is bonded in a distorted single-bond geometry to four equivalent Sr2+ and one Au2+ atom. In the second Si+1.33- site, Si+1.33- is bonded in a distorted bent 120 degrees geometry to four equivalent Sr2+ and two equivalent Au2+ atoms.

36 MATERIALS SCIENCE↗