Materials Data on Na2U2O7 by Materials Project

doi:10.17188/1729042

Title: Materials Data on Na2U2O7 by Materials Project

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Abstract

Na2U2O7 crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Na–O bond distances ranging from 2.46–2.75 Å. In the second Na1+ site, Na1+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Na–O bond distances ranging from 2.61–2.82 Å. There are two inequivalent U6+ sites. In the first U6+ site, U6+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of U–O bond distances ranging from 1.87–2.50 Å. In the second U6+ site, U6+ is bonded to six O2- atoms to form distorted corner-sharing UO6 octahedra. The corner-sharing octahedral tilt angles are 43°. There are a spread of U–O bond distances ranging from 1.90–2.26 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to three Na1+ and one U6+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three Na1+ and one U6+ atom. In the third O2- site, O2- is bonded to threemore »« less

Authors:: The Materials Project

Publication Date:: 2020-05-03

Other Number(s):: mp-1221282

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; Na2U2O7; Na-O-U

OSTI Identifier:: 1729042

DOI:: https://doi.org/10.17188/1729042

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                    The Materials Project. Materials Data on Na2U2O7 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1729042.

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                    The Materials Project. Materials Data on Na2U2O7 by Materials Project.  United States.  doi:https://doi.org/10.17188/1729042

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                    The Materials Project. 2020.  
"Materials Data on Na2U2O7 by Materials Project".  United States.  doi:https://doi.org/10.17188/1729042.  https://www.osti.gov/servlets/purl/1729042. Pub date:Sun May 03 00:00:00 EDT 2020

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@article{osti_1729042,

  title        = {Materials Data on Na2U2O7 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {Na2U2O7 crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Na–O bond distances ranging from 2.46–2.75 Å. In the second Na1+ site, Na1+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Na–O bond distances ranging from 2.61–2.82 Å. There are two inequivalent U6+ sites. In the first U6+ site, U6+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of U–O bond distances ranging from 1.87–2.50 Å. In the second U6+ site, U6+ is bonded to six O2- atoms to form distorted corner-sharing UO6 octahedra. The corner-sharing octahedral tilt angles are 43°. There are a spread of U–O bond distances ranging from 1.90–2.26 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to three Na1+ and one U6+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three Na1+ and one U6+ atom. In the third O2- site, O2- is bonded to three Na1+ and one U6+ atom to form distorted corner-sharing ONa3U tetrahedra. In the fourth O2- site, O2- is bonded to three Na1+ and one U6+ atom to form distorted corner-sharing ONa3U tetrahedra. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to one Na1+ and three U6+ atoms. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to one Na1+ and three U6+ atoms. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to one Na1+ and three U6+ atoms.},

  doi          = {10.17188/1729042},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {5}

}

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DOI: https://doi.org/10.17188/1729042

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