SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Au3Si crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Au+1.33+ is bonded in a see-saw-like geometry to four equivalent Si4- atoms. There are two shorter (2.89 Å) and two longer (2.92 Å) Au–Si bond lengths. Si4- is bonded to twelve equivalent Au+1.33+ atoms to form a mixture of corner and face-sharing SiAu12 cuboctahedra.
Au3Si is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Au+1.33+ sites. In the first Au+1.33+ site, Au+1.33+ is bonded to four equivalent Au+1.33+ and four equivalent Si4- atoms to form a mixture of corner, edge, and face-sharing AuSi4Au4 tetrahedra. All Au–Au bond lengths are 2.85 Å. All Au–Si bond lengths are 2.85 Å. In the second Au+1.33+ site, Au+1.33+ is bonded in a distorted body-centered cubic geometry to eight equivalent Au+1.33+ atoms. Si4- is bonded in a body-centered cubic geometry to eight equivalent Au+1.33+ atoms.