Materials Data on Ba3(CdAs2)2 by Materials Project

doi:10.17188/1722007

Title: Materials Data on Ba3(CdAs2)2 by Materials Project

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Abstract

Ba3Cd2As4 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded to seven As+2.50- atoms to form BaAs7 pentagonal bipyramids that share corners with six equivalent BaAs6 octahedra, corners with seven equivalent CdAs4 tetrahedra, an edgeedge with one BaAs6 octahedra, edges with four equivalent BaAs7 pentagonal bipyramids, edges with three equivalent CdAs4 tetrahedra, a faceface with one BaAs6 octahedra, and faces with three equivalent BaAs7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 38–50°. There are a spread of Ba–As bond distances ranging from 3.44–3.57 Å. In the second Ba2+ site, Ba2+ is bonded to six As+2.50- atoms to form BaAs6 octahedra that share corners with twelve equivalent BaAs7 pentagonal bipyramids, corners with two equivalent CdAs4 tetrahedra, edges with two equivalent BaAs6 octahedra, edges with two equivalent BaAs7 pentagonal bipyramids, edges with four equivalent CdAs4 tetrahedra, and faces with two equivalent BaAs7 pentagonal bipyramids. There are two shorter (3.32 Å) and four longer (3.38 Å) Ba–As bond lengths. Cd2+ is bonded to four As+2.50- atoms to form CdAs4 tetrahedra that share a cornercorner with one BaAs6 octahedra, corners with seven equivalent BaAs7 pentagonal bipyramids,more »« less

Authors:: The Materials Project

Publication Date:: 2020-05-03

Other Number(s):: mp-1080464

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; Ba3(CdAs2)2; As-Ba-Cd

OSTI Identifier:: 1722007

DOI:: https://doi.org/10.17188/1722007

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                    The Materials Project. Materials Data on Ba3(CdAs2)2 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1722007.

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                    The Materials Project. Materials Data on Ba3(CdAs2)2 by Materials Project.  United States.  doi:https://doi.org/10.17188/1722007

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                    The Materials Project. 2020.  
"Materials Data on Ba3(CdAs2)2 by Materials Project".  United States.  doi:https://doi.org/10.17188/1722007.  https://www.osti.gov/servlets/purl/1722007. Pub date:Sun May 03 00:00:00 EDT 2020

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@article{osti_1722007,

  title        = {Materials Data on Ba3(CdAs2)2 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {Ba3Cd2As4 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded to seven As+2.50- atoms to form BaAs7 pentagonal bipyramids that share corners with six equivalent BaAs6 octahedra, corners with seven equivalent CdAs4 tetrahedra, an edgeedge with one BaAs6 octahedra, edges with four equivalent BaAs7 pentagonal bipyramids, edges with three equivalent CdAs4 tetrahedra, a faceface with one BaAs6 octahedra, and faces with three equivalent BaAs7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 38–50°. There are a spread of Ba–As bond distances ranging from 3.44–3.57 Å. In the second Ba2+ site, Ba2+ is bonded to six As+2.50- atoms to form BaAs6 octahedra that share corners with twelve equivalent BaAs7 pentagonal bipyramids, corners with two equivalent CdAs4 tetrahedra, edges with two equivalent BaAs6 octahedra, edges with two equivalent BaAs7 pentagonal bipyramids, edges with four equivalent CdAs4 tetrahedra, and faces with two equivalent BaAs7 pentagonal bipyramids. There are two shorter (3.32 Å) and four longer (3.38 Å) Ba–As bond lengths. Cd2+ is bonded to four As+2.50- atoms to form CdAs4 tetrahedra that share a cornercorner with one BaAs6 octahedra, corners with seven equivalent BaAs7 pentagonal bipyramids, corners with two equivalent CdAs4 tetrahedra, edges with two equivalent BaAs6 octahedra, edges with three equivalent BaAs7 pentagonal bipyramids, and edges with two equivalent CdAs4 tetrahedra. The corner-sharing octahedral tilt angles are 47°. There are a spread of Cd–As bond distances ranging from 2.79–2.86 Å. There are two inequivalent As+2.50- sites. In the first As+2.50- site, As+2.50- is bonded in a 7-coordinate geometry to four Ba2+ and three equivalent Cd2+ atoms. In the second As+2.50- site, As+2.50- is bonded in a 8-coordinate geometry to six Ba2+, one Cd2+, and one As+2.50- atom. The As–As bond length is 2.52 Å.},

  doi          = {10.17188/1722007},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {5}

}

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DOI: https://doi.org/10.17188/1722007

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