Materials Data on Na3Sr3GaAs4 by Materials Project
Na3Sr3GaAs4 crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. Na1+ is bonded to four As3- atoms to form distorted NaAs4 trigonal pyramids that share corners with two equivalent GaAs4 tetrahedra, corners with eight equivalent NaAs4 trigonal pyramids, and an edgeedge with one GaAs4 tetrahedra. There are a spread of Na–As bond distances ranging from 2.95–3.33 Å. Sr2+ is bonded in a 6-coordinate geometry to six As3- atoms. There are a spread of Sr–As bond distances ranging from 3.22–3.58 Å. Ga3+ is bonded to four As3- atoms to form GaAs4 tetrahedra that share corners with six equivalent NaAs4 trigonal pyramids and edges with three equivalent NaAs4 trigonal pyramids. There are three shorter (2.53 Å) and one longer (2.62 Å) Ga–As bond lengths. There are two inequivalent As3- sites. In the first As3- site, As3- is bonded in a 8-coordinate geometry to three equivalent Na1+, four equivalent Sr2+, and one Ga3+ atom. In the second As3- site, As3- is bonded in a 10-coordinate geometry to three equivalent Na1+, six equivalent Sr2+, and one Ga3+ atom.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Contributing Organization:
- MIT; UC Berkeley; Duke; U Louvain
- DOE Contract Number:
- AC02-05CH11231; EDCBEE
- OSTI ID:
- 1186083
- Report Number(s):
- mp-10097
- Resource Relation:
- Related Information: https://materialsproject.org/citing
- Country of Publication:
- United States
- Language:
- English
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