Materials Data on KNaH2 by Materials Project
KNaH2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. K1+ is bonded to six H1- atoms to form KH6 octahedra that share corners with six equivalent KH6 octahedra, edges with four equivalent KH6 octahedra, and edges with eight equivalent NaH6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.67 Å) and four longer (2.68 Å) K–H bond lengths. Na1+ is bonded to six H1- atoms to form NaH6 octahedra that share corners with six equivalent NaH6 octahedra, edges with four equivalent NaH6 octahedra, and edges with eight equivalent KH6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.67 Å) and four longer (2.68 Å) Na–H bond lengths. There are two inequivalent H1- sites. In the first H1- site, H1- is bonded to four equivalent K1+ and two equivalent Na1+ atoms to form a mixture of edge and corner-sharing HK4Na2 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second H1- site, H1- is bonded to two equivalent K1+ and four equivalent Na1+ atoms to form HK2Na4 octahedra that share corners with six equivalent HK2Na4 octahedra and edges with twelve HK4Na2 octahedra. The corner-sharing octahedral tilt angles are 0°.
- 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:
- 1324706
- Report Number(s):
- mp-1007637
- Resource Relation:
- Related Information: https://materialsproject.org/citing
- Country of Publication:
- United States
- Language:
- English
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