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Materials Data on SiAs2 by Materials Project

Dataset ·
DOI:https://doi.org/10.17188/1196536· OSTI ID:1196536
SiAs2 is Pyrite structured and crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. Si4+ is bonded to six equivalent As2- atoms to form SiAs6 octahedra that share corners with twelve equivalent SiAs6 octahedra and corners with six equivalent AsSi3As tetrahedra. The corner-sharing octahedral tilt angles are 64°. All Si–As bond lengths are 2.55 Å. As2- is bonded to three equivalent Si4+ and one As2- atom to form distorted AsSi3As tetrahedra that share corners with three equivalent SiAs6 octahedra and corners with fifteen equivalent AsSi3As tetrahedra. The corner-sharing octahedral tilt angles are 78°. The As–As bond length is 2.45 Å.
Research Organization:
LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Contributing Organization:
The Materials Project; MIT; UC Berkeley; Duke; U Louvain
DOE Contract Number:
AC02-05CH11231
OSTI ID:
1196536
Report Number(s):
mp-21268
Country of Publication:
United States
Language:
English

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