Materials Data on La2Se2O by Materials Project
La2Se2O crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 3-coordinate geometry to five Se2- and three equivalent O2- atoms. There are a spread of La–Se bond distances ranging from 3.16–3.31 Å. There are one shorter (2.42 Å) and two longer (2.45 Å) La–O bond lengths. In the second La3+ site, La3+ is bonded to five Se2- and one O2- atom to form a mixture of distorted edge and corner-sharing LaSe5O octahedra. The corner-sharing octahedral tilt angles are 65°. There are a spread of La–Se bond distances ranging from 2.98–3.07 Å. The La–O bond length is 2.37 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 5-coordinate geometry to five La3+ atoms. In the second Se2- site, Se2- is bonded in a 3-coordinate geometry to five La3+ atoms. O2- is bonded to four La3+ atoms to form a mixture of edge and corner-sharing OLa4 tetrahedra.
- 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:
- 1288545
- Report Number(s):
- mp-752418
- Country of Publication:
- United States
- Language:
- English
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