Materials Data on KCa4Si8H16O28F by Materials Project
(KCa4Si8(H4O7)4)2F2 crystallizes in the tetragonal P4/mnc space group. The structure is three-dimensional and consists of two hydrofluoric acid molecules and one KCa4Si8(H4O7)4 framework. In the KCa4Si8(H4O7)4 framework, K1+ is bonded in a body-centered cubic geometry to eight equivalent O2- atoms. All K–O bond lengths are 2.64 Å. Ca2+ is bonded in a 8-coordinate geometry to two equivalent H1+ and six O2- atoms. Both Ca–H bond lengths are 2.36 Å. There are a spread of Ca–O bond distances ranging from 2.33–2.72 Å. Si4+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Si–O bond distances ranging from 1.64–2.01 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the second H1+ site, H1+ is bonded in a distorted single-bond geometry to one Ca2+ and one H1+ atom. The H–H bond length is 0.77 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, two equivalent Ca2+, and one Si4+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Si4+ atoms. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two equivalent Si4+ atoms. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Ca2+, one Si4+, and one H1+ 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:
- 1277437
- Report Number(s):
- mp-605239
- Resource Relation:
- Related Information: https://materialsproject.org/citing
- Country of Publication:
- United States
- Language:
- English
Similar Records
Materials Data on KCa4Si8H16O28F by Materials Project
Materials Data on K2NaCa2TiSi7HO20 by Materials Project