Materials Data on BaNb7O9 by Materials Project

doi:10.17188/1262229

Title: Materials Data on BaNb7O9 by Materials Project

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Abstract

BaNb7O9 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ba2+ is bonded to twelve O2- atoms to form BaO12 cuboctahedra that share corners with four equivalent BaO12 cuboctahedra, faces with four equivalent BaO12 cuboctahedra, and faces with eight equivalent NbO5 square pyramids. There are eight shorter (2.93 Å) and four longer (3.00 Å) Ba–O bond lengths. There are three inequivalent Nb+2.29+ sites. In the first Nb+2.29+ site, Nb+2.29+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Nb–O bond lengths are 2.12 Å. In the second Nb+2.29+ site, Nb+2.29+ is bonded in a square co-planar geometry to four O2- atoms. There are a spread of Nb–O bond distances ranging from 2.11–2.16 Å. In the third Nb+2.29+ site, Nb+2.29+ is bonded to five O2- atoms to form NbO5 square pyramids that share corners with five equivalent NbO5 square pyramids and faces with four equivalent BaO12 cuboctahedra. There are one shorter (2.12 Å) and four longer (2.13 Å) Nb–O bond lengths. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a square co-planar geometry to four Nb+2.29+ atoms. In the second O2- site, O2- is bonded in a rectangularmore »« less

Authors:: The Materials Project

Publication Date:: Wed Jul 15 00:00:00 EDT 2020

Other Number(s):: mp-505078

DOE Contract Number:: AC02-05CH11231; EDCBEE

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Collaborations:: MIT; UC Berkeley; Duke; U Louvain

Subject:: 36 MATERIALS SCIENCE

Keywords:: crystal structure; BaNb7O9; Ba-Nb-O

OSTI Identifier:: 1262229

DOI:: https://doi.org/10.17188/1262229

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                    The Materials Project. Materials Data on BaNb7O9 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1262229.

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                    The Materials Project. Materials Data on BaNb7O9 by Materials Project.  United States.  doi:https://doi.org/10.17188/1262229

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                    The Materials Project. 2020.  
"Materials Data on BaNb7O9 by Materials Project".  United States.  doi:https://doi.org/10.17188/1262229.  https://www.osti.gov/servlets/purl/1262229. Pub date:Wed Jul 15 00:00:00 EDT 2020

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@article{osti_1262229,

  title        = {Materials Data on BaNb7O9 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {BaNb7O9 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ba2+ is bonded to twelve O2- atoms to form BaO12 cuboctahedra that share corners with four equivalent BaO12 cuboctahedra, faces with four equivalent BaO12 cuboctahedra, and faces with eight equivalent NbO5 square pyramids. There are eight shorter (2.93 Å) and four longer (3.00 Å) Ba–O bond lengths. There are three inequivalent Nb+2.29+ sites. In the first Nb+2.29+ site, Nb+2.29+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Nb–O bond lengths are 2.12 Å. In the second Nb+2.29+ site, Nb+2.29+ is bonded in a square co-planar geometry to four O2- atoms. There are a spread of Nb–O bond distances ranging from 2.11–2.16 Å. In the third Nb+2.29+ site, Nb+2.29+ is bonded to five O2- atoms to form NbO5 square pyramids that share corners with five equivalent NbO5 square pyramids and faces with four equivalent BaO12 cuboctahedra. There are one shorter (2.12 Å) and four longer (2.13 Å) Nb–O bond lengths. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a square co-planar geometry to four Nb+2.29+ atoms. In the second O2- site, O2- is bonded in a rectangular see-saw-like geometry to four equivalent Nb+2.29+ atoms. In the third O2- site, O2- is bonded in a distorted T-shaped geometry to two equivalent Ba2+ and three Nb+2.29+ atoms. In the fourth O2- site, O2- is bonded in a distorted linear geometry to four equivalent Ba2+ and two equivalent Nb+2.29+ atoms.},

  doi          = {10.17188/1262229},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Wed Jul 15 00:00:00 EDT 2020},

  month        = {Wed Jul 15 00:00:00 EDT 2020}

}

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DOI: https://doi.org/10.17188/1262229

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