Materials Data on Na2Te2As by Materials Project

doi:10.17188/1203728

Title: Materials Data on Na2Te2As by Materials Project

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Abstract

Na2AsTe2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. there are four inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to six Te2- atoms to form a mixture of distorted corner and face-sharing NaTe6 octahedra. The corner-sharing octahedra tilt angles range from 30–44°. There are a spread of Na–Te bond distances ranging from 3.17–3.62 Å. In the second Na1+ site, Na1+ is bonded to six Te2- atoms to form a mixture of corner and face-sharing NaTe6 octahedra. The corner-sharing octahedra tilt angles range from 30–44°. There are a spread of Na–Te bond distances ranging from 3.22–3.43 Å. In the third Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six Te2- atoms. There are a spread of Na–Te bond distances ranging from 3.22–3.81 Å. In the fourth Na1+ site, Na1+ is bonded in a 4-coordinate geometry to five Te2- atoms. There are a spread of Na–Te bond distances ranging from 3.17–3.87 Å. There are two inequivalent As2+ sites. In the first As2+ site, As2+ is bonded in a water-like geometry to two Te2- atoms. There are one shorter (2.62 Å) and one longer (2.63 Å) As–Te bond lengths. In the second As2+ site,more »« less

Authors:: The Materials Project

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

Other Number(s):: mp-29381

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; Na2Te2As; As-Na-Te

OSTI Identifier:: 1203728

DOI:: https://doi.org/10.17188/1203728

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                    The Materials Project. Materials Data on Na2Te2As by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1203728.

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                    The Materials Project. Materials Data on Na2Te2As by Materials Project.  United States.  doi:https://doi.org/10.17188/1203728

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                    The Materials Project. 2020.  
"Materials Data on Na2Te2As by Materials Project".  United States.  doi:https://doi.org/10.17188/1203728.  https://www.osti.gov/servlets/purl/1203728. Pub date:Thu Apr 30 00:00:00 EDT 2020

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@article{osti_1203728,

  title        = {Materials Data on Na2Te2As by Materials Project},

  author       = {The Materials Project},

  abstractNote = {Na2AsTe2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. there are four inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to six Te2- atoms to form a mixture of distorted corner and face-sharing NaTe6 octahedra. The corner-sharing octahedra tilt angles range from 30–44°. There are a spread of Na–Te bond distances ranging from 3.17–3.62 Å. In the second Na1+ site, Na1+ is bonded to six Te2- atoms to form a mixture of corner and face-sharing NaTe6 octahedra. The corner-sharing octahedra tilt angles range from 30–44°. There are a spread of Na–Te bond distances ranging from 3.22–3.43 Å. In the third Na1+ site, Na1+ is bonded in a 6-coordinate geometry to six Te2- atoms. There are a spread of Na–Te bond distances ranging from 3.22–3.81 Å. In the fourth Na1+ site, Na1+ is bonded in a 4-coordinate geometry to five Te2- atoms. There are a spread of Na–Te bond distances ranging from 3.17–3.87 Å. There are two inequivalent As2+ sites. In the first As2+ site, As2+ is bonded in a water-like geometry to two Te2- atoms. There are one shorter (2.62 Å) and one longer (2.63 Å) As–Te bond lengths. In the second As2+ site, As2+ is bonded in a water-like geometry to two Te2- atoms. There are one shorter (2.62 Å) and one longer (2.65 Å) As–Te bond lengths. There are four inequivalent Te2- sites. In the first Te2- site, Te2- is bonded to six Na1+ and one As2+ atom to form distorted TeNa6As pentagonal bipyramids that share corners with two equivalent TeNa5As pentagonal pyramids, edges with two equivalent TeNa6As pentagonal bipyramids, and edges with three equivalent TeNa5As pentagonal pyramids. In the second Te2- site, Te2- is bonded to five Na1+ and one As2+ atom to form distorted TeNa5As pentagonal pyramids that share corners with two equivalent TeNa6As pentagonal bipyramids, corners with two equivalent TeNa5As pentagonal pyramids, and edges with three equivalent TeNa6As pentagonal bipyramids. In the third Te2- site, Te2- is bonded in a 7-coordinate geometry to six Na1+ and one As2+ atom. In the fourth Te2- site, Te2- is bonded in a 7-coordinate geometry to six Na1+ and one As2+ atom.},

  doi          = {10.17188/1203728},

  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/10.17188/1203728

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