U.S. Department of EnergyOffice of Scientific and Technical Information
Materials Data on KNb(BO3)2 by Materials Project
Abstract
KNbB2O6 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. there are four inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.92–3.41 Å. In the second K1+ site, K1+ is bonded in a 5-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.90–3.47 Å. In the third K1+ site, K1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.84–3.50 Å. In the fourth K1+ site, K1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.84–3.34 Å. There are four inequivalent Nb5+ sites. In the first Nb5+ site, Nb5+ is bonded to six O2- atoms to form distorted corner-sharing NbO6 octahedra. The corner-sharing octahedra tilt angles range from 22–28°. There are a spread of Nb–O bond distances ranging from 1.81–2.32 Å. In the second Nb5+ site, Nb5+ is bonded to six O2- atoms to form distorted corner-sharing NbO6 octahedra. The corner-sharing octahedra tilt angles range from 4–20°.more »
- Publication Date:
- Other Number(s):
- mp-1200391
- DOE Contract Number:
- AC02-05CH11231
- Research Org.:
- LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Collaborations:
- The Materials Project; MIT; UC Berkeley; Duke; U Louvain
- Subject:
- 36 MATERIALS SCIENCE; B-K-Nb-O; KNb(BO3)2; crystal structure
- OSTI Identifier:
- 1745202
- DOI:
- https://doi.org/10.17188/1745202
Citation Formats
Materials Data on KNb(BO3)2 by Materials Project. United States: N. p., 2020.
Web. doi:10.17188/1745202.
Materials Data on KNb(BO3)2 by Materials Project. United States. doi:https://doi.org/10.17188/1745202
2020.
"Materials Data on KNb(BO3)2 by Materials Project". United States. doi:https://doi.org/10.17188/1745202. https://www.osti.gov/servlets/purl/1745202. Pub date:Wed Apr 29 04:00:00 UTC 2020
@article{osti_1745202,
title = {Materials Data on KNb(BO3)2 by Materials Project},
abstractNote = {KNbB2O6 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. there are four inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.92–3.41 Å. In the second K1+ site, K1+ is bonded in a 5-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.90–3.47 Å. In the third K1+ site, K1+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of K–O bond distances ranging from 2.84–3.50 Å. In the fourth K1+ site, K1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.84–3.34 Å. There are four inequivalent Nb5+ sites. In the first Nb5+ site, Nb5+ is bonded to six O2- atoms to form distorted corner-sharing NbO6 octahedra. The corner-sharing octahedra tilt angles range from 22–28°. There are a spread of Nb–O bond distances ranging from 1.81–2.32 Å. In the second Nb5+ site, Nb5+ is bonded to six O2- atoms to form distorted corner-sharing NbO6 octahedra. The corner-sharing octahedra tilt angles range from 4–20°. There are a spread of Nb–O bond distances ranging from 1.81–2.30 Å. In the third Nb5+ site, Nb5+ is bonded to six O2- atoms to form distorted corner-sharing NbO6 octahedra. The corner-sharing octahedra tilt angles range from 4–22°. There are a spread of Nb–O bond distances ranging from 1.81–2.31 Å. In the fourth Nb5+ site, Nb5+ is bonded to six O2- atoms to form distorted corner-sharing NbO6 octahedra. The corner-sharing octahedra tilt angles range from 20–28°. There are a spread of Nb–O bond distances ranging from 1.82–2.31 Å. There are eight inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.41 Å. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.36 Å) and one longer (1.41 Å) B–O bond length. In the third B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.36 Å) and one longer (1.41 Å) B–O bond length. In the fourth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.41 Å. In the fifth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.37 Å) and one longer (1.40 Å) B–O bond length. In the sixth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.36 Å) and one longer (1.41 Å) B–O bond length. In the seventh B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.36 Å) and one longer (1.41 Å) B–O bond length. In the eighth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.36 Å) and one longer (1.41 Å) B–O bond length. There are twenty-four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+, one Nb5+, and one B3+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two K1+ and two B3+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Nb5+, and one B3+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+ and two Nb5+ atoms. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Nb5+, and one B3+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two K1+, one Nb5+, and one B3+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to two K1+ and two B3+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two K1+, one Nb5+, and one B3+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+, one Nb5+, and one B3+ atom. In the tenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two K1+, one Nb5+, and one B3+ atom. In the eleventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two K1+, one Nb5+, and one B3+ atom. In the twelfth O2- site, O2- is bonded in a linear geometry to one K1+, one Nb5+, and one B3+ atom. In the thirteenth O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Nb5+, and one B3+ atom. In the fourteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two K1+ and two B3+ atoms. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one Nb5+, and one B3+ atom. In the sixteenth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one Nb5+, and one B3+ atom. In the seventeenth O2- site, O2- is bonded in a distorted linear geometry to two Nb5+ atoms. In the eighteenth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one Nb5+, and one B3+ atom. In the nineteenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Nb5+, and one B3+ atom. In the twentieth O2- site, O2- is bonded in a bent 120 degrees geometry to two K1+ and two B3+ atoms. In the twenty-first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two Nb5+ atoms. In the twenty-second O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Nb5+, and one B3+ atom. In the twenty-third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two Nb5+ atoms. In the twenty-fourth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one Nb5+, and one B3+ atom.},
doi = {10.17188/1745202},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Apr 29 04:00:00 UTC 2020},
month = {Wed Apr 29 04:00:00 UTC 2020}
}
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