Materials Data on K2PrNb5O15 by Materials Project

doi:10.17188/1705573

Title: Materials Data on K2PrNb5O15 by Materials Project

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Abstract

K2PrNb5O15 crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.84–3.21 Å. Pr3+ is bonded to twelve O2- atoms to form PrO12 cuboctahedra that share faces with two equivalent PrO12 cuboctahedra and faces with eight equivalent NbO6 octahedra. There are four shorter (2.65 Å) and eight longer (2.71 Å) Pr–O bond lengths. There are two inequivalent Nb5+ sites. In the first Nb5+ site, Nb5+ is bonded to six O2- atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedra tilt angles range from 0–31°. There is two shorter (1.98 Å) and four longer (2.01 Å) Nb–O bond length. In the second Nb5+ site, Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with six NbO6 octahedra and faces with two equivalent PrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 11–38°. There are a spread of Nb–O bond distances ranging from 1.93–2.10 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two equivalent K1+ and two Nb5+ atoms. Inmore »« less

Authors:: The Materials Project

Publication Date:: Thu Apr 30 00:00:00 EDT 2020

Other Number(s):: mp-1211647

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; K2PrNb5O15; K-Nb-O-Pr

OSTI Identifier:: 1705573

DOI:: https://doi.org/10.17188/1705573

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                    The Materials Project. Materials Data on K2PrNb5O15 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1705573.

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                    The Materials Project. Materials Data on K2PrNb5O15 by Materials Project.  United States.  doi:https://doi.org/10.17188/1705573

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                    The Materials Project. 2020.  
"Materials Data on K2PrNb5O15 by Materials Project".  United States.  doi:https://doi.org/10.17188/1705573.  https://www.osti.gov/servlets/purl/1705573. Pub date:Thu Apr 30 00:00:00 EDT 2020

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@article{osti_1705573,

  title        = {Materials Data on K2PrNb5O15 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {K2PrNb5O15 crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.84–3.21 Å. Pr3+ is bonded to twelve O2- atoms to form PrO12 cuboctahedra that share faces with two equivalent PrO12 cuboctahedra and faces with eight equivalent NbO6 octahedra. There are four shorter (2.65 Å) and eight longer (2.71 Å) Pr–O bond lengths. There are two inequivalent Nb5+ sites. In the first Nb5+ site, Nb5+ is bonded to six O2- atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedra tilt angles range from 0–31°. There is two shorter (1.98 Å) and four longer (2.01 Å) Nb–O bond length. In the second Nb5+ site, Nb5+ is bonded to six O2- atoms to form NbO6 octahedra that share corners with six NbO6 octahedra and faces with two equivalent PrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 11–38°. There are a spread of Nb–O bond distances ranging from 1.93–2.10 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two equivalent K1+ and two Nb5+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Pr3+, and two equivalent Nb5+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+ and two equivalent Nb5+ atoms. In the fourth O2- site, O2- is bonded in a linear geometry to two equivalent K1+ and two equivalent Nb5+ atoms. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Pr3+ and two equivalent Nb5+ atoms.},

  doi          = {10.17188/1705573},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Apr 30 00:00:00 EDT 2020},

  month        = {Thu Apr 30 00:00:00 EDT 2020}

}

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DOI: https://doi.org/10.17188/1705573

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